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  Subjects -> CHEMISTRY (Total: 846 journals)
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    - CHEMISTRY (596 journals)
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CHEMISTRY (596 journals)                  1 2 3 | Last

Showing 1 - 200 of 735 Journals sorted alphabetically
2D Materials     Hybrid Journal   (Followers: 8)
Accreditation and Quality Assurance: Journal for Quality, Comparability and Reliability in Chemical Measurement     Hybrid Journal   (Followers: 26)
ACS Catalysis     Full-text available via subscription   (Followers: 34)
ACS Chemical Neuroscience     Full-text available via subscription   (Followers: 18)
ACS Combinatorial Science     Full-text available via subscription   (Followers: 23)
ACS Macro Letters     Full-text available via subscription   (Followers: 24)
ACS Medicinal Chemistry Letters     Full-text available via subscription   (Followers: 39)
ACS Nano     Full-text available via subscription   (Followers: 244)
ACS Photonics     Full-text available via subscription   (Followers: 12)
ACS Synthetic Biology     Full-text available via subscription   (Followers: 23)
Acta Chemica Iasi     Open Access   (Followers: 2)
Acta Chimica Sinica     Full-text available via subscription   (Followers: 1)
Acta Chimica Slovaca     Open Access   (Followers: 1)
Acta Chimica Slovenica     Open Access  
Acta Chromatographica     Full-text available via subscription   (Followers: 9)
Acta Facultatis Medicae Naissensis     Open Access  
Acta Metallurgica Sinica (English Letters)     Hybrid Journal   (Followers: 5)
Acta Scientifica Naturalis     Open Access   (Followers: 2)
adhäsion KLEBEN & DICHTEN     Hybrid Journal   (Followers: 5)
Adhesion Adhesives & Sealants     Hybrid Journal   (Followers: 8)
Adsorption Science & Technology     Full-text available via subscription   (Followers: 5)
Advanced Functional Materials     Hybrid Journal   (Followers: 51)
Advanced Science Focus     Free   (Followers: 3)
Advances in Chemical Engineering and Science     Open Access   (Followers: 56)
Advances in Chemical Science     Open Access   (Followers: 13)
Advances in Chemistry     Open Access   (Followers: 15)
Advances in Colloid and Interface Science     Full-text available via subscription   (Followers: 18)
Advances in Drug Research     Full-text available via subscription   (Followers: 22)
Advances in Enzyme Research     Open Access   (Followers: 9)
Advances in Fluorine Science     Full-text available via subscription   (Followers: 8)
Advances in Fuel Cells     Full-text available via subscription   (Followers: 16)
Advances in Heterocyclic Chemistry     Full-text available via subscription   (Followers: 9)
Advances in Materials Physics and Chemistry     Open Access   (Followers: 21)
Advances in Nanoparticles     Open Access   (Followers: 15)
Advances in Organometallic Chemistry     Full-text available via subscription   (Followers: 15)
Advances in Polymer Science     Hybrid Journal   (Followers: 41)
Advances in Protein Chemistry     Full-text available via subscription   (Followers: 17)
Advances in Protein Chemistry and Structural Biology     Full-text available via subscription   (Followers: 20)
Advances in Quantum Chemistry     Full-text available via subscription   (Followers: 5)
Advances in Science and Technology     Full-text available via subscription   (Followers: 12)
African Journal of Bacteriology Research     Open Access  
African Journal of Chemical Education     Open Access   (Followers: 2)
African Journal of Pure and Applied Chemistry     Open Access   (Followers: 7)
Agrokémia és Talajtan     Full-text available via subscription   (Followers: 2)
Al-Kimia : Jurnal Penelitian Sains Kimia     Open Access  
Alkaloids: Chemical and Biological Perspectives     Full-text available via subscription   (Followers: 3)
AMB Express     Open Access   (Followers: 1)
Ambix     Hybrid Journal   (Followers: 3)
American Journal of Biochemistry and Biotechnology     Open Access   (Followers: 66)
American Journal of Biochemistry and Molecular Biology     Open Access   (Followers: 15)
American Journal of Chemistry     Open Access   (Followers: 27)
American Journal of Plant Physiology     Open Access   (Followers: 14)
American Mineralogist     Hybrid Journal   (Followers: 14)
Analyst     Full-text available via subscription   (Followers: 39)
Angewandte Chemie     Hybrid Journal   (Followers: 218)
Angewandte Chemie International Edition     Hybrid Journal   (Followers: 222)
Annales UMCS, Chemia     Open Access   (Followers: 1)
Annals of Clinical Chemistry and Laboratory Medicine     Open Access   (Followers: 4)
Annual Reports in Computational Chemistry     Full-text available via subscription   (Followers: 3)
Annual Reports Section A (Inorganic Chemistry)     Full-text available via subscription   (Followers: 4)
Annual Reports Section B (Organic Chemistry)     Full-text available via subscription   (Followers: 8)
Annual Review of Chemical and Biomolecular Engineering     Full-text available via subscription   (Followers: 12)
Annual Review of Food Science and Technology     Full-text available via subscription   (Followers: 16)
Anti-Infective Agents     Hybrid Journal   (Followers: 3)
Antiviral Chemistry and Chemotherapy     Hybrid Journal  
Applied Organometallic Chemistry     Hybrid Journal   (Followers: 7)
Applied Spectroscopy     Full-text available via subscription   (Followers: 22)
Applied Surface Science     Hybrid Journal   (Followers: 28)
Arabian Journal of Chemistry     Open Access   (Followers: 6)
ARKIVOC     Open Access   (Followers: 2)
Asian Journal of Biochemistry     Open Access   (Followers: 1)
Atomization and Sprays     Full-text available via subscription   (Followers: 4)
Australian Journal of Chemistry     Hybrid Journal   (Followers: 7)
Autophagy     Hybrid Journal   (Followers: 2)
Avances en Quimica     Open Access   (Followers: 1)
Biochemical Pharmacology     Hybrid Journal   (Followers: 10)
Biochemistry     Full-text available via subscription   (Followers: 317)
Biochemistry Insights     Open Access   (Followers: 6)
Biochemistry Research International     Open Access   (Followers: 6)
BioChip Journal     Hybrid Journal  
Bioinorganic Chemistry and Applications     Open Access   (Followers: 9)
Bioinspired Materials     Open Access   (Followers: 5)
Biointerface Research in Applied Chemistry     Open Access   (Followers: 2)
Biointerphases     Open Access   (Followers: 1)
Biology, Medicine, & Natural Product Chemistry     Open Access   (Followers: 1)
Biomacromolecules     Full-text available via subscription   (Followers: 19)
Biomass Conversion and Biorefinery     Partially Free   (Followers: 10)
Biomedical Chromatography     Hybrid Journal   (Followers: 6)
Biomolecular NMR Assignments     Hybrid Journal   (Followers: 3)
BioNanoScience     Partially Free   (Followers: 5)
Bioorganic & Medicinal Chemistry     Hybrid Journal   (Followers: 119)
Bioorganic & Medicinal Chemistry Letters     Hybrid Journal   (Followers: 84)
Bioorganic Chemistry     Hybrid Journal   (Followers: 10)
Biopolymers     Hybrid Journal   (Followers: 18)
Biosensors     Open Access   (Followers: 2)
Biotechnic and Histochemistry     Hybrid Journal   (Followers: 1)
Bitácora Digital     Open Access  
Boletin de la Sociedad Chilena de Quimica     Open Access  
Bulletin of the Chemical Society of Ethiopia     Open Access   (Followers: 2)
Bulletin of the Chemical Society of Japan     Full-text available via subscription   (Followers: 24)
Bulletin of the Korean Chemical Society     Hybrid Journal   (Followers: 1)
C - Journal of Carbon Research     Open Access   (Followers: 3)
Cakra Kimia (Indonesian E-Journal of Applied Chemistry)     Open Access  
Canadian Association of Radiologists Journal     Full-text available via subscription   (Followers: 3)
Canadian Journal of Chemistry     Hybrid Journal   (Followers: 10)
Canadian Mineralogist     Full-text available via subscription   (Followers: 5)
Carbohydrate Research     Hybrid Journal   (Followers: 26)
Carbon     Hybrid Journal   (Followers: 66)
Catalysis for Sustainable Energy     Open Access   (Followers: 7)
Catalysis Reviews: Science and Engineering     Hybrid Journal   (Followers: 8)
Catalysis Science and Technology     Free   (Followers: 7)
Catalysis Surveys from Asia     Hybrid Journal   (Followers: 3)
Catalysts     Open Access   (Followers: 8)
Cellulose     Hybrid Journal   (Followers: 7)
Cereal Chemistry     Full-text available via subscription   (Followers: 4)
ChemBioEng Reviews     Full-text available via subscription   (Followers: 1)
ChemCatChem     Hybrid Journal   (Followers: 8)
Chemical and Engineering News     Free   (Followers: 15)
Chemical Bulletin of Kazakh National University     Open Access  
Chemical Communications     Full-text available via subscription   (Followers: 69)
Chemical Engineering Research and Design     Hybrid Journal   (Followers: 25)
Chemical Research in Chinese Universities     Hybrid Journal   (Followers: 3)
Chemical Research in Toxicology     Full-text available via subscription   (Followers: 20)
Chemical Reviews     Full-text available via subscription   (Followers: 179)
Chemical Science     Open Access   (Followers: 22)
Chemical Technology     Open Access   (Followers: 16)
Chemical Vapor Deposition     Hybrid Journal   (Followers: 5)
Chemical Week     Full-text available via subscription   (Followers: 8)
Chemie in Unserer Zeit     Hybrid Journal   (Followers: 56)
Chemie-Ingenieur-Technik (Cit)     Hybrid Journal   (Followers: 24)
ChemInform     Hybrid Journal   (Followers: 8)
Chemistry & Biodiversity     Hybrid Journal   (Followers: 6)
Chemistry & Biology     Full-text available via subscription   (Followers: 30)
Chemistry & Industry     Hybrid Journal   (Followers: 5)
Chemistry - A European Journal     Hybrid Journal   (Followers: 150)
Chemistry - An Asian Journal     Hybrid Journal   (Followers: 15)
Chemistry and Materials Research     Open Access   (Followers: 20)
Chemistry Central Journal     Open Access   (Followers: 4)
Chemistry Education Research and Practice     Free   (Followers: 5)
Chemistry in Education     Open Access   (Followers: 9)
Chemistry International     Hybrid Journal   (Followers: 2)
Chemistry Letters     Full-text available via subscription   (Followers: 42)
Chemistry of Materials     Full-text available via subscription   (Followers: 227)
Chemistry of Natural Compounds     Hybrid Journal   (Followers: 9)
Chemistry World     Full-text available via subscription   (Followers: 22)
Chemistry-Didactics-Ecology-Metrology     Open Access   (Followers: 1)
ChemistryOpen     Open Access   (Followers: 2)
Chemkon - Chemie Konkret, Forum Fuer Unterricht Und Didaktik     Hybrid Journal  
Chemoecology     Hybrid Journal   (Followers: 4)
Chemometrics and Intelligent Laboratory Systems     Hybrid Journal   (Followers: 14)
Chemosensors     Open Access  
ChemPhysChem     Hybrid Journal   (Followers: 9)
ChemPlusChem     Hybrid Journal   (Followers: 2)
ChemTexts     Hybrid Journal  
CHIMIA International Journal for Chemistry     Full-text available via subscription   (Followers: 2)
Chinese Journal of Chemistry     Hybrid Journal   (Followers: 6)
Chinese Journal of Polymer Science     Hybrid Journal   (Followers: 10)
Chromatographia     Hybrid Journal   (Followers: 24)
Clay Minerals     Full-text available via subscription   (Followers: 10)
Cogent Chemistry     Open Access  
Colloid and Interface Science Communications     Open Access  
Colloid and Polymer Science     Hybrid Journal   (Followers: 10)
Colloids and Surfaces B: Biointerfaces     Hybrid Journal   (Followers: 7)
Combinatorial Chemistry & High Throughput Screening     Hybrid Journal   (Followers: 4)
Combustion Science and Technology     Hybrid Journal   (Followers: 18)
Comments on Inorganic Chemistry: A Journal of Critical Discussion of the Current Literature     Hybrid Journal   (Followers: 2)
Composite Interfaces     Hybrid Journal   (Followers: 6)
Comprehensive Chemical Kinetics     Full-text available via subscription   (Followers: 2)
Comptes Rendus Chimie     Full-text available via subscription  
Comptes Rendus Physique     Full-text available via subscription   (Followers: 1)
Computational and Theoretical Chemistry     Hybrid Journal   (Followers: 9)
Computational Biology and Chemistry     Hybrid Journal   (Followers: 11)
Computational Chemistry     Open Access   (Followers: 2)
Computers & Chemical Engineering     Hybrid Journal   (Followers: 9)
Coordination Chemistry Reviews     Full-text available via subscription   (Followers: 3)
Copernican Letters     Open Access   (Followers: 1)
Corrosion Series     Full-text available via subscription   (Followers: 6)
Critical Reviews in Biochemistry and Molecular Biology     Hybrid Journal   (Followers: 5)
Croatica Chemica Acta     Open Access  
Crystal Structure Theory and Applications     Open Access   (Followers: 4)
CrystEngComm     Full-text available via subscription   (Followers: 13)
Current Catalysis     Hybrid Journal   (Followers: 2)
Current Metabolomics     Hybrid Journal   (Followers: 5)
Current Opinion in Colloid & Interface Science     Hybrid Journal   (Followers: 9)
Current Opinion in Molecular Therapeutics     Full-text available via subscription   (Followers: 17)
Current Research in Chemistry     Open Access   (Followers: 8)
Current Science     Open Access   (Followers: 62)
Dalton Transactions     Full-text available via subscription   (Followers: 23)
Detection     Open Access   (Followers: 2)
Developments in Geochemistry     Full-text available via subscription   (Followers: 2)
Diamond and Related Materials     Hybrid Journal   (Followers: 12)
Dislocations in Solids     Full-text available via subscription  
Doklady Chemistry     Hybrid Journal  
Drying Technology: An International Journal     Hybrid Journal   (Followers: 4)
Eclética Química     Open Access   (Followers: 1)
Ecological Chemistry and Engineering S     Open Access   (Followers: 3)
Ecotoxicology and Environmental Contamination     Open Access  
Educación Química     Open Access   (Followers: 1)
Education for Chemical Engineers     Hybrid Journal   (Followers: 5)
EJNMMI Radiopharmacy and Chemistry     Open Access  

        1 2 3 | Last

Journal Cover Cellulose
  [SJR: 1.167]   [H-I: 71]   [7 followers]  Follow
    
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 1572-882X - ISSN (Online) 0969-0239
   Published by Springer-Verlag Homepage  [2354 journals]
  • Physical properties of TEMPO-oxidized bacterial cellulose nanofibers on
           the skin surface
    • Authors: Seung-Hyun Jun; Seol-Hoon Lee; Seoyeon Kim; Sun-Gyoo Park; Cheon-Koo Lee; Nae-Kyu Kang
      Pages: 5267 - 5274
      Abstract: Water-dispersed bacterial cellulose nanofibers were prepared via an oxidation reaction using 2,2,6,6-tetramethyl-1-piperidine-N-oxy radical (TEMPO) as a catalyst. It was found that TEMPO-oxidized bacterial cellulose nanofibers (TOCNs) synthesized via sodium bromide-free methods are similar to those synthesized using sodium bromide. The TOCNs retained their unique structure in water as well as in emulsion. TOCNs adhere to the skin surface while maintaining nanofibrous structures, providing inherent functions of bacterial cellulose, such as high tensile strength, high water-holding capacity, and blockage of harmful substances. When gelatin gels as model skin were coated with TOCNs, the hardness representing the elasticity was increased by 20% compared to untreated gelatin gel because TOCNs could tightly hold the gelatin structure. When porcine skin was treated with TOCNs, carboxymethyl cellulose, and hydroxyethyl cellulose, the initial water contact angles were 26.5°, 76.5°, and 64.1°, respectively. The contact angle of TOCNs dramatically decreased over time as water penetrated the fibrous structure of the TOCN film. When observed by scanning electron microscopy and confocal microscopy, TOCNs on the skin surface provided physical gaps between particles and the skin, blocking the adsorption of particulate matter to the skin surface. On the contrary, the structure of water-soluble polymers was disrupted by an external environment, such as water, so that particulate matter directly attached to the skin surface. Characterization of TOCNs on the skin surface offered insight into the function of nanofibers on the skin, which is important for their applications with respect to the skin and biomedical research.
      PubDate: 2017-12-01
      DOI: 10.1007/s10570-017-1508-2
      Issue No: Vol. 24, No. 12 (2017)
       
  • Preparation of highly flexible cellulose acetate membranes modified by
           hyperbranched poly(amine ester)-epoxidized soybean oil and evaluation of
           its filtration properties
    • Authors: Hossein Mahdavi; Aliasghar Kamyabi; Taieb Shahalizade; Hossein Asadollahi Taheri
      Pages: 5389 - 5402
      Abstract: Cellulose acetate (CA) is considered as one of the first materials used in membrane technology. However, CA membranes suffered finding their way for widespread commercial applications due to low mechanical stability and sensitivity to bio-fouling. In this study a green procedure was developed to overcome some of CA drawbacks in membrane applications. For this purpose 2nd generation of hyperbranched poly(amine ester) (HBPAE-G2), was synthesized using methyl 3-[bis(2-hydroxyethyl)amino]propanoate and triethanolamine through a pseudo one-pot polycondensation, reacted with soybean oil fatty acid, and then double bonds epoxidized by H2O2/formic acid to acquire hyperbranched poly(amine ester)-epoxidized soybean oil (HBPAE-ESBOFA). Finally, this reactive additive was blended with CA membrane dope solution to obtain simultaneously plasticized and cross-linked structure. Synthesis procedures were monitored by FTIR and NMR techniques, and membrane samples were investigated using ATR-FTIR, FE-SEM (top and cross-sectional), TGA and DSC. Filtration properties were studied by determining pure water flux, water contact angle, bio-fouling, water content, mean pore size and solute rejection tests. Permeability tests showed decline in water flux, but fouling resistance, salt rejection and thermal properties improved. Moreover, modified samples showed fascinating flexibility and mechanical stability enhanced dramatically.
      PubDate: 2017-12-01
      DOI: 10.1007/s10570-017-1526-0
      Issue No: Vol. 24, No. 12 (2017)
       
  • Reversing the structural chirality of cellulosic nanomaterials
    • Authors: Kevin M. Conley; Louis Godbout; M. A. Whitehead; Theo G. M. van de Ven
      Pages: 5455 - 5462
      Abstract: Nature organizes cellulose, a linear polysaccharide of D-glucose and an important component of plants and trees, into intricate structures with twists in the trunks of trees, microfibrils within cell walls, and at the nanoscale. Manipulating the hierarchical organization of materials requires control down to the molecular level. In computational models cellulose nanocrystals twist, and Quantum Mechanical models have shown recently that chains at the surface of nanocrystals are right-handed, while the interior chains are mostly left-handed. Here we provide experimental evidence showing the induced circular dichroism of two optical dyes reverses when adsorbed onto thin cellulose nanocrystals. The reversal in optical activity is consistent with earlier TD-DFT B3LYP 6-31G calculations of the induced optical activity of Congo red adsorbed onto twisted 1 0 0 crystal surfaces of cellulose and demonstrates control of the chiral molecular interactions at the nanocrystal surface. The results suggest it may be possible to reverse the structural twist handedness of the nanocrystal itself and build chirality-dependent hierarchical supramolecular structures from cellulose.
      PubDate: 2017-12-01
      DOI: 10.1007/s10570-017-1533-1
      Issue No: Vol. 24, No. 12 (2017)
       
  • Effect of the graft density of cellulose diacetate-modified layered
           perovskite nanosheets on mechanical properties of the transparent
           organic–inorganic hybrids bearing covalent bonds at the interface
    • Authors: Satoru Sato; Kenji Shintani; Naokazu Idota; Takashi Nishino; Yoshiyuki Sugahara
      Pages: 5463 - 5473
      Abstract: Transparent organic–inorganic hybrids with a whitish colour were prepared from cellulose diacetate (CDA) nanosheets derived from Dion–Jacobson-type ion-exchangeable layered perovskite HLaNb2O7·xH2O (HLaNb) to prepare CDA-based hybrids bearing covalent bonds between HLaNb nanosheets and CDA matrices for improved mechanical properties. An n-decoxy derivative of HLaNb (C10_HLaNb) was exfoliated in acetonitrile by ultrasonication. TEM and AFM images revealed that C10_HLaNb was exfoliated into individual nanosheets. In order to explore the local environment around HLaNb nanosheets, a very small amount of CDA was reacted with a C10_HLaNb nanosheet dispersion [molar ratio COH:(NbOH + NbOC10H21) = 4:1] at 80 °C, and solid-state 13C NMR with cross polarization and magic angle spinning techniques showed that an alcohol-exchange-type reaction was proceeded to graft the CDA chains to the HLaNb nanosheets via new Nb–O–C covalent linkages. The CDA-based hybrids were prepared by dispersing 5 mass% of HLaNb nanosheets in CDA and subsequent heating at 80 °C for 1–7 days to cause a grafting reaction, and the product prepared by a 1-day grafting reaction exhibited improved mechanical properties compared to neat CDA; the Young’s modulus, tensile strength and toughness increased by 18, 34 and 78%, respectively. The mechanical properties deteriorated with further extension of the reaction period, however. In addition, a hybrid film prepared by mixing CDA and a C10_HLaNb nanosheet dispersion exhibited only a slight improvement in mechanical properties. These results clearly indicate that formation of an appropriate number of Nb–O–C bonds at the nanosheet/CDA interfaces is effective for improving mechanical properties.
      PubDate: 2017-12-01
      DOI: 10.1007/s10570-017-1475-7
      Issue No: Vol. 24, No. 12 (2017)
       
  • Effect of micro/nano white bamboo fibrils on physical characteristics of
           epoxy resin reinforced composites
    • Authors: Cuong Manh Vu; Le Hoang Sinh; Hyoung Jin Choi; Tien Duc Pham
      Pages: 5475 - 5486
      Abstract: As a green filler comprising both nano- and micro-sized fibrils, micro/nano white bamboo fibrils (MWBFs) were treated with a silane coupling agent (S-MWBFs) prior to their introduction in an epoxy resin (EP). The sequential processes of steam explosion, alkaline treatment, and micro grinding were used to prepare to MWBFs. The effects of the S-MWBFs on various characteristics of the cured EP such as compatibility, fracture toughness, morphology, mechanical property, and flame retardation were studied. The fracture toughness and mechanical characteristics of both the storage modulus and tanδ maximum increased following addition of the S-MWBFs to the EP. Notably, the fracture toughness of the EP with 0.3 wt% of S-MWBFs was 22.2% higher than that of unmodified resin. Scanning electron microscopy presented somewhat rougher surfaces with shear deformation and tortuously twisting cracks, resulting in a higher fracture toughness in S-MWBF-modified epoxy samples. However, fire testing showed that the presence of S-MWBFs increased the burning rate of the EP.
      PubDate: 2017-12-01
      DOI: 10.1007/s10570-017-1503-7
      Issue No: Vol. 24, No. 12 (2017)
       
  • Thermodynamic effect on interaction between crystalline phases in
           size-controlled ACC-bacterial nanocellulose and poly(vinyl alcohol)
    • Authors: Gento Ishikawa; Tetsuo Kondo
      Pages: 5495 - 5503
      Abstract: The aqueous counter collision (ACC) method can provide single bacterial nanocellulose ribbons (ACC-BNC) in a desired width, from a pellicle produced by Gluconacetobacter xylinus. Kose et al. (Biomacromolecules, 12:716–720, 2011) reported that the ACC process transformed the major Iα crystalline phase of the native fiber to a stable Iβ phase, without decreasing the overall crystallinity. The current study investigated the variation of the crystalline phases of ACC-BNC, upon interaction with poly(vinyl alcohol) (PVA). ACC-BNC of desired width was mixed with PVA, without any chemical reaction occurring. This resulted in a homogeneous suspension. The equilibrium melting point of PVA in cast nanocomposite films was investigated, as a probe for evaluating the crystalline surface properties of the ACC-BNC. A decrease in the equilibrium melting point of PVA would have indicated attractive interactions between the PVA and ACC-BNC. However, the nature of the ACC-BNC surface in the presence of PVA depended on the ACC-BNC width. Thicker ACC-BNC acted as a nucleating agent for PVA. Thinner ACC-BNC acted as a diluent of PVA. This tendency was opposite to the case for Iβ-dominant ACC-wood nanocellulose. ACC-BNC acting as a nucleating agent was more efficient than ACC-wood nanocellulose. The results suggested that ACC-BNC surfaces, which probably contained I α phases, had different characteristics to those of Iβ-dominant ACC-wood nanocellulose surfaces.
      PubDate: 2017-12-01
      DOI: 10.1007/s10570-017-1532-2
      Issue No: Vol. 24, No. 12 (2017)
       
  • Surface grafting of bamboo fibers with 1,2-epoxy-4-vinylcyclohexane for
           reinforcing unsaturated polyester
    • Authors: Ming-En Fei; Tianshun Xie; Wendi Liu; Han Chen; Renhui Qiu
      Pages: 5505 - 5514
      Abstract: The present study focused on the surface treatment of bamboo fibers (BFs) with a bifunctional monomer, 1,2-epoxy-4-vinylcyclohexane (EVC), in the presence of N, N-dimethylbenzylamine as the catalyst, which results in the grafting of the fibers with C=C bonds on the surface. The modified BFs carrying C=C bonds were used to prepare bamboo fibers reinforced unsaturated polyester (UPE) composites by hand lay-up compression molding. Hence, chemical connections between the modified-fibers and UPE resins were formed via the free-radical polymerization of the C=C bonds during the preparation of the BFs–UPE composites. XPS analysis proved that the EVC was covalently bonded onto BFs. XRD analysis revealed that EVC-grafting did not alter the crystal structure of the fibers, but slightly decreased their crystallinity degrees. SEM images indicated an markedly improved interfacial adhesion between BFs and UPE matrices after fiber modification, which significantly increased the tensile strength, flexural strength, flexural modulus, storage modulus, glass transition temperature, and water resistance of the resulting BFs–UPE composites.
      PubDate: 2017-12-01
      DOI: 10.1007/s10570-017-1497-1
      Issue No: Vol. 24, No. 12 (2017)
       
  • Erratum to: Surface grafting of bamboo fibers with
           1,2-epoxy-4-vinylcyclohexane for reinforcing unsaturated polyester
    • Authors: Ming-En Fei; Tianshun Xie; Wendi Liu; Han Chen; Renhui Qiu
      Pages: 5515 - 5516
      Abstract: In the original publication of the article, an error occurred in the calculation of crystallinity index (CrI) of bamboo fibers (BFs) based on the Segal method.
      PubDate: 2017-12-01
      DOI: 10.1007/s10570-017-1534-0
      Issue No: Vol. 24, No. 12 (2017)
       
  • Cellulose-chitosan beads crosslinked by dialdehyde cellulose
    • Authors: Ung-Jin Kim; Hyeon Joo Kim; Joon Weon Choi; Satoshi Kimura; Masahisa Wada
      Pages: 5517 - 5528
      Abstract: Crosslinked cellulose-chitosan beads were obtained via dissolution-regeneration of cellulose and chitosan by a LiOH/urea aqueous solution, followed by the crosslinking of chitosan via dialdehyde cellulose (DAC). This crosslinking reaction involved the Schiff base formation between the aldehyde groups of DAC and the amino groups of chitosan and subsequent reduction. DAC was prepared through periodate oxidation of cellulose and solubilization in hot water at 100 °C for 1 h. Four grades of DAC-crosslinked cellulose-chitosan were prepared by controlling the amount of cellulose and chitosan. The DAC-crosslinked cellulose-chitosan showed higher stability in the pH range of 2–9 over a long-term 21-day test. Additionally, the DAC-crosslinked chitosan showed a higher bovine serum albumin adsorption capacity as a result of the increased amino group content due to the crosslinking between DAC and chitosan, which occurred at multiple points in spite of a lower degree in crosslinking.
      PubDate: 2017-12-01
      DOI: 10.1007/s10570-017-1528-y
      Issue No: Vol. 24, No. 12 (2017)
       
  • One-step removal of insoluble oily compounds and water-miscible
           contaminants from water by underwater superoleophobic graphene
           oxide-coated cotton
    • Authors: Danning Zhu; Yunfei Xia; Jin Yang; Beibei Chen; Shun Guo; Changsheng Li
      Pages: 5605 - 5614
      Abstract: We prepared a superhydrophilic/underwater superoleophobic graphene oxide (GO)-coated cotton for wastewater purification by a simple approach to overcome the difficulty of simultaneously removing insoluble oily compounds and water-miscible contaminants from water. GO can be attached onto the surface of cotton fibers by means of hydrogen bonds between oxygen-containing groups of GO and cotton, with a mass fraction of 6.9 wt%. Large numbers of oxygen-containing groups, combined with the inherent three-dimensional network structure, lead to a water contact angle of 0° and an underwater oil contact angle of 170° ± 1° on the GO-coated cotton. Various oil-in-water emulsions, dye wastewaters and even mixtures of both can be economically and effectively purified by using GO-coated cotton. Most of oils can be filtered with removal efficiency of over 99% and dyes can be absorbed with removal efficiency of over 97%. Our results show that the GO-coated cotton can be regenerated and maintain this high removal efficiency after 50 separation cycles. We anticipate that underwater superoleophobic GO-coated cotton would be an ideal wastewater purification material for practical applications.
      PubDate: 2017-12-01
      DOI: 10.1007/s10570-017-1514-4
      Issue No: Vol. 24, No. 12 (2017)
       
  • Preparation of a cellulosic adsorbent by functionalization with pyridone
           diacid for removal of Pb(II) and Co(II) from aqueous solutions
    • Authors: Chang Sun; Jiadong Ni; Chunyan Zhao; Jinmei Du; Change Zhou; Shugen Wang; Changhai Xu
      Pages: 5615 - 5624
      Abstract: A cellulosic adsorbent (PDA–MCC) was prepared by halogenation of microcrystalline cellulose (MCC) and functionalized with pyridone diacid (PDA) for removing lead and cobalt ions from aqueous solutions. PDA–MCC was characterized by Fourier transform infrared spectroscopy, scanning electron microscope, and thermal gravimetric analysis. The performance of PDA–MCC in removing lead and cobalt ions was examined by investigating the adsorption behaviors of lead and cobalt ions on PDA–MCC. Results from the adsorption of lead and cobalt ions on PDA–MCC showed that the adsorption kinetics followed the pseudo-second-order kinetic model, and the adsorption isotherms could be described by the Langmuir model. The maximum adsorption capacities of PDA–MCC towards lead and cobalt ions were determined to be 177.75 and 122.70 mg/g, respectively, which are greater than those of most reported cellulosic adsorbents. The reusable experiment showed that PDA–MCC could be regenerated in an acid solution, and had the adsorption capacities remained greater than 75% even after five cycles of regeneration.
      PubDate: 2017-12-01
      DOI: 10.1007/s10570-017-1519-z
      Issue No: Vol. 24, No. 12 (2017)
       
  • Synthesis of hydrophobically modified cellulose-based flocculant and its
           application in treatments of kaolin suspension and machining wastewater
    • Authors: Xiaogang Yang; Lianwei Zhang; Xu Jin; Lin Liu; Yong Zhang; Qingqing Ni; Juming Yao
      Pages: 5639 - 5647
      Abstract: In this work, an efficient and hydrophobic bamboo pulp cellulose-graft-sodium silicate–polyacrylamide (BPC-g-Si–PAM) flocculant was designed and synthesized to improve its flocculation performance as well as the dewatering efficiency of coagulation sludge. The optimal synthesis process of BPC-g-Si–PAM and its optimal flocculation conditions on wastewater treatment were investigated in detail. Compared with unmodified BPC-g-PAM and commercial PAM, hydrophobic BPC-g-Si–PAM flocculant exhibited better flocculation performance with SV30 of 5.8%. Moreover, TSS, COD and turbidity reduction for machining wastewater reached upto 98.1, 86.8 and 97.6%, respectively. Compared with commercial PAM, removal rate increased by 2.69, 7.68 and 2.68%, respectively. And also BPC-g-Si–PAM exhibited higher removal efficiency for ammonia nitrogen (77.7%), total iron (99.3%), total phosphorus (93.6%) and total zinc (96.7%) than PAM. All the results demonstrated that hydrophobic BPC-g-Si–PAM has a potential application prospect in industrial wastewater treatment.
      PubDate: 2017-12-01
      DOI: 10.1007/s10570-017-1525-1
      Issue No: Vol. 24, No. 12 (2017)
       
  • Temperature-induced formation of cellulose nanofiber film with remarkably
           high gas separation performance
    • Authors: Xiong-Fei Zhang; Yi Feng; Chaobo Huang; Yichang Pan; Jianfeng Yao
      Pages: 5649 - 5656
      Abstract: Free-standing cellulose nanofiber (CNF) films were prepared by a specially designed oven-drying approach. For the first time, the evaporation rate was carefully controlled to enhance the gas separation performance of the CNF film with the highest H2/N2 and H2/O2 selectivities of 159.4 and 218.2, respectively. The dense structure formed by the CNFs and the intra- and inter-fibrillar hydrogen bonds are believed to contribute to the separation property. Particularly, the specific role of floating-shape film precursor formed at the rapid evaporation stage (stage I) and the mechanism for film formation were investigated. This study demonstrated that the evaporation rate controlled by the heating temperature exhibited significant influence on surface, uniformity and gas separation of the CNF films.
      PubDate: 2017-12-01
      DOI: 10.1007/s10570-017-1529-x
      Issue No: Vol. 24, No. 12 (2017)
       
  • Desizing of starch sized cotton fabrics with atmospheric pressure plasma
    • Authors: Carrie Cornelius; Marian McCord; Mohamed Bourham; Peter Hauser
      Pages: 5685 - 5695
      Abstract: Atmospheric pressure plasma is examined as a desizing agent for starch-sized cotton samples. Plasma treatment is examined both for its physical etching properties and for its ability to induce desizing of the starch during a scouring bath. The effect of the plasma gas composition and plasma exposure duration are evaluated. A 2-min helium/oxygen plasma is found to be the only condition that appears to improve desizing of starch.
      PubDate: 2017-12-01
      DOI: 10.1007/s10570-017-1509-1
      Issue No: Vol. 24, No. 12 (2017)
       
  • Erratum to: Effect of cationic polymethacrylates on the rheology and
           flocculation of microfibrillated cellulose
    • Authors: Anni Karppinen; Arja-Helena Vesterinen; Tapio Saarinen; Pirjo Pietikäinen; Jukka Seppälä
      Pages: 5705 - 5705
      Abstract: The article “Effect of cationic polymethacrylates on the rheology and flocculation of microfibrillated cellulose”, written by Anni Karppinen, Arja-Helena Vesterinen, Tapio Saarinen, Pirjo Pietikäinen and Jukka Seppälä, was originally published Online First without open access. After publication in volume 18, issue 6, pages 1381–1390, the author decided to opt for Open Choice and to make the article an open-access publication. Therefore, the copyright of the article has been changed to © The Author(s) 2017, and the article is forthwith distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits use, duplication, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
      PubDate: 2017-12-01
      DOI: 10.1007/s10570-017-1494-4
      Issue No: Vol. 24, No. 12 (2017)
       
  • Erratum to: Surface functionalization of nanofibrillated cellulose using
           click-chemistry approach in aqueous media
    • Authors: Nikolaos Pahimanolis; Ulla Hippi; Leena-Sisko Johansson; Tapio Saarinen; Nikolay Houbenov; Janne Ruokolainen; Jukka Seppälä
      Pages: 5707 - 5707
      Abstract: The article “Surface functionalization of nanofibrillated cellulose using click-chemistry approach in aqueous media”, written by Nikolaos Pahimanolis, Ulla Hippi, Leena-Sisko Johansson, Tapio Saarinen, Nikolay Houbenov, Janne Ruokolainen and Jukka Seppälä, was originally published Online First without open access.
      PubDate: 2017-12-01
      DOI: 10.1007/s10570-017-1500-x
      Issue No: Vol. 24, No. 12 (2017)
       
  • Erratum to: Flocculated flow of microfibrillated cellulose water
           suspensions: an imaging approach for characterisation of rheological
           behaviour
    • Authors: Eve Saarikoski; Tapio Saarinen; Juha Salmela; Jukka Seppälä
      Pages: 5709 - 5709
      Abstract: The article “Flocculated flow of microfibrillated cellulose water suspensions: an imaging approach for characterisation of rheological behaviour,” written by Eve Saarikoski, Tapio Saarinen, Juha Salmela and Jukka Seppälä, was originally published Online First without open access.
      PubDate: 2017-12-01
      DOI: 10.1007/s10570-017-1501-9
      Issue No: Vol. 24, No. 12 (2017)
       
  • Erratum to: Flocculation of microfibrillated cellulose in shear flow
    • Authors: Anni Karppinen; Tapio Saarinen; Juha Salmela; Antti Laukkanen; Markus Nuopponen; Jukka Seppälä
      Pages: 5711 - 5711
      Abstract: The article “Flocculation of microfibrillated cellulose in shear flow”, written by Anni Karppinen, Tapio Saarinen, Juha Salmela, Antti Laukkanen, Markus Nuopponen and Jukka Seppälä, was originally published Online First without open access.
      PubDate: 2017-12-01
      DOI: 10.1007/s10570-017-1502-8
      Issue No: Vol. 24, No. 12 (2017)
       
  • Erratum to: Nanofibrillated cellulose: properties reinvestigated
    • Authors: Ali Naderi; Tom Lindström
      Pages: 5713 - 5713
      Abstract: In the original publication of the article, the co-author name Tom Lindström was mistakenly missed out. Also the affiliation of the corresponding author was provided incorrectly. It has been updated in this erratum.
      PubDate: 2017-12-01
      DOI: 10.1007/s10570-017-1516-2
      Issue No: Vol. 24, No. 12 (2017)
       
  • Preparation and characterization of magnetic Fe 3 O 4 –chitosan
           nanoparticles for cellulase immobilization
    • Authors: Yan Lin; Xi Liu; Zhaohui Xing; Yong Geng; Jeffrey Wilson; Deyi Wu; Hainan Kong
      Abstract: Cellulase immobilization is an important issue for cellulose hydrolysis in bioethanol production. In this study, Fe3O4 nanoparticles were synthesized using a coprecipitation method and were coated with chitosan. Glutaraldehyde was used as cross-linking reagent for cellulase immobilization. The morphology, structure, and related physical and chemical properties of the supports were studied by X-ray diffraction, a physical property measurement system, Fourier transform infrared spectroscopy, and Transmission electron microscopy. Response surface methodology was used to determine the optimal cellulase loading efficiency (LE) and standard recovery ratio (RR). The verification tests show the immobilized particles had an LE of 99.6% and an RR value of 68.5%. It was found that immobilized cellulase had a wider range of adaptability to hydrolysis pH and temperature when compared with free cellulase. Five hydrolysis experiments demonstrated effective hydrolysis using immobilized cellulase while maintaining on average 80% of the free cellulase’s activity.
      PubDate: 2017-11-02
      DOI: 10.1007/s10570-017-1520-6
       
 
 
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