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  Subjects -> BIOLOGY (Total: 3193 journals)
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BIOTECHNOLOGY (244 journals)                  1 2 | Last

Showing 1 - 200 of 244 Journals sorted alphabetically
3 Biotech     Open Access   (Followers: 8)
Advanced Biomedical Research     Open Access  
Advances in Bioscience and Biotechnology     Open Access   (Followers: 17)
Advances in Genetic Engineering & Biotechnology     Hybrid Journal   (Followers: 9)
Advances in Regenerative Medicine     Open Access   (Followers: 3)
African Journal of Biotechnology     Open Access   (Followers: 6)
Algal Research     Partially Free   (Followers: 11)
American Journal of Biochemistry and Biotechnology     Open Access   (Followers: 69)
American Journal of Bioinformatics Research     Open Access   (Followers: 7)
American Journal of Polymer Science     Open Access   (Followers: 33)
Amylase     Open Access  
Anadolu University Journal of Science and Technology : C Life Sciences and Biotechnology     Open Access  
Animal Biotechnology     Hybrid Journal   (Followers: 8)
Annales des Sciences Agronomiques     Full-text available via subscription  
Applied Biochemistry and Biotechnology     Hybrid Journal   (Followers: 45)
Applied Biosafety     Hybrid Journal  
Applied Food Biotechnology     Open Access   (Followers: 3)
Applied Microbiology and Biotechnology     Hybrid Journal   (Followers: 67)
Applied Mycology and Biotechnology     Full-text available via subscription   (Followers: 4)
Arthroplasty Today     Open Access   (Followers: 1)
Artificial Cells, Nanomedicine and Biotechnology     Hybrid Journal   (Followers: 1)
Asia Pacific Biotech News     Hybrid Journal   (Followers: 2)
Asian Journal of Biotechnology     Open Access   (Followers: 9)
Asian Pacific Journal of Tropical Biomedicine     Open Access   (Followers: 2)
Australasian Biotechnology     Full-text available via subscription   (Followers: 1)
Banat's Journal of Biotechnology     Open Access  
BBR : Biochemistry and Biotechnology Reports     Open Access   (Followers: 5)
Beitr?ge zur Tabakforschung International/Contributions to Tobacco Research     Open Access   (Followers: 3)
Bio-Algorithms and Med-Systems     Hybrid Journal   (Followers: 2)
Bio-Research     Full-text available via subscription   (Followers: 4)
Bioactive Materials     Open Access   (Followers: 1)
Biocatalysis and Agricultural Biotechnology     Hybrid Journal   (Followers: 4)
Biocybernetics and Biological Engineering     Full-text available via subscription   (Followers: 5)
Bioethics UPdate     Hybrid Journal   (Followers: 1)
Biofuels     Hybrid Journal   (Followers: 11)
Biofuels Engineering     Open Access   (Followers: 1)
Biological & Pharmaceutical Bulletin     Full-text available via subscription   (Followers: 4)
Biological Cybernetics     Hybrid Journal   (Followers: 10)
Biomarkers and Genomic Medicine     Open Access   (Followers: 3)
Biomaterials Research     Open Access   (Followers: 4)
BioMed Research International     Open Access   (Followers: 4)
Biomédica     Open Access  
Biomedical and Biotechnology Research Journal     Open Access  
Biomedical Engineering Research     Open Access   (Followers: 6)
Biomedical Glasses     Open Access  
Biomedical Reports     Full-text available via subscription  
BioMedicine     Open Access  
Biomedika     Open Access  
Bioprinting     Hybrid Journal   (Followers: 1)
Bioresource Technology Reports     Hybrid Journal   (Followers: 1)
Bioscience, Biotechnology, and Biochemistry     Hybrid Journal   (Followers: 21)
Biosensors Journal     Open Access  
Biosimilars     Open Access   (Followers: 1)
Biosurface and Biotribology     Open Access  
Biotechnic and Histochemistry     Hybrid Journal   (Followers: 1)
BioTechniques : The International Journal of Life Science Methods     Full-text available via subscription   (Followers: 28)
Biotechnologia Acta     Open Access   (Followers: 1)
Biotechnologie, Agronomie, Société et Environnement     Open Access   (Followers: 2)
Biotechnology     Open Access   (Followers: 8)
Biotechnology & Biotechnological Equipment     Open Access   (Followers: 4)
Biotechnology Advances     Hybrid Journal   (Followers: 34)
Biotechnology and Applied Biochemistry     Hybrid Journal   (Followers: 44)
Biotechnology and Bioengineering     Hybrid Journal   (Followers: 159)
Biotechnology and Bioprocess Engineering     Hybrid Journal   (Followers: 6)
Biotechnology and Genetic Engineering Reviews     Hybrid Journal   (Followers: 13)
Biotechnology and Health Sciences     Open Access   (Followers: 1)
Biotechnology and Molecular Biology Reviews     Open Access   (Followers: 2)
Biotechnology Annual Review     Full-text available via subscription   (Followers: 5)
Biotechnology for Biofuels     Open Access   (Followers: 10)
Biotechnology Frontier     Open Access   (Followers: 2)
Biotechnology Journal     Hybrid Journal   (Followers: 17)
Biotechnology Law Report     Hybrid Journal   (Followers: 4)
Biotechnology Letters     Hybrid Journal   (Followers: 34)
Biotechnology Progress     Hybrid Journal   (Followers: 41)
Biotechnology Reports     Open Access  
Biotechnology Research International     Open Access   (Followers: 1)
Biotechnology Techniques     Hybrid Journal   (Followers: 10)
Biotecnología Aplicada     Open Access  
Bioteknologi (Biotechnological Studies)     Open Access  
BIOTIK : Jurnal Ilmiah Biologi Teknologi dan Kependidikan     Open Access  
Biotribology     Hybrid Journal   (Followers: 1)
BMC Biotechnology     Open Access   (Followers: 17)
Cell Biology and Development     Open Access  
Chinese Journal of Agricultural Biotechnology     Full-text available via subscription   (Followers: 4)
Communications in Mathematical Biology and Neuroscience     Open Access  
Computational and Structural Biotechnology Journal     Open Access   (Followers: 2)
Computer Methods and Programs in Biomedicine     Hybrid Journal   (Followers: 8)
Copernican Letters     Open Access   (Followers: 1)
Critical Reviews in Biotechnology     Hybrid Journal   (Followers: 20)
Crop Breeding and Applied Biotechnology     Open Access   (Followers: 3)
Current Bionanotechnology     Hybrid Journal  
Current Biotechnology     Hybrid Journal   (Followers: 4)
Current Opinion in Biomedical Engineering     Hybrid Journal   (Followers: 1)
Current Opinion in Biotechnology     Hybrid Journal   (Followers: 55)
Current Pharmaceutical Biotechnology     Hybrid Journal   (Followers: 9)
Current Research in Bioinformatics     Open Access   (Followers: 13)
Current Trends in Biotechnology and Chemical Research     Open Access   (Followers: 3)
Current trends in Biotechnology and Pharmacy     Open Access   (Followers: 8)
DNA and RNA Nanotechnology     Open Access  
EBioMedicine     Open Access  
Electronic Journal of Biotechnology     Open Access  
Entomologia Generalis     Full-text available via subscription   (Followers: 1)
Environmental Science : Processes & Impacts     Full-text available via subscription   (Followers: 4)
Experimental Biology and Medicine     Hybrid Journal   (Followers: 3)
Folia Medica Indonesiana     Open Access  
Food Bioscience     Hybrid Journal  
Food Biotechnology     Hybrid Journal   (Followers: 9)
Food Science and Biotechnology     Hybrid Journal   (Followers: 8)
Frontiers in Bioengineering and Biotechnology     Open Access   (Followers: 6)
Frontiers in Systems Biology     Open Access   (Followers: 2)
Fungal Biology and Biotechnology     Open Access   (Followers: 2)
GM Crops and Food: Biotechnology in Agriculture and the Food Chain     Full-text available via subscription   (Followers: 1)
GSTF Journal of BioSciences     Open Access  
HAYATI Journal of Biosciences     Open Access  
Horticultural Biotechnology Research     Open Access  
Horticulture, Environment, and Biotechnology     Hybrid Journal   (Followers: 11)
IEEE Transactions on Molecular, Biological and Multi-Scale Communications     Hybrid Journal   (Followers: 1)
IET Nanobiotechnology     Hybrid Journal   (Followers: 2)
IN VIVO     Full-text available via subscription   (Followers: 4)
Indian Journal of Biotechnology (IJBT)     Open Access   (Followers: 2)
Indonesia Journal of Biomedical Science     Open Access   (Followers: 2)
Indonesian Journal of Biotechnology     Open Access   (Followers: 1)
Indonesian Journal of Medicine     Open Access  
Industrial Biotechnology     Hybrid Journal   (Followers: 18)
International Biomechanics     Open Access  
International Journal of Bioinformatics Research and Applications     Hybrid Journal   (Followers: 14)
International Journal of Biomechatronics and Biomedical Robotics     Hybrid Journal   (Followers: 4)
International Journal of Biomedical Research     Open Access   (Followers: 2)
International Journal of Biotechnology     Hybrid Journal   (Followers: 5)
International Journal of Biotechnology and Molecular Biology Research     Open Access   (Followers: 4)
International Journal of Biotechnology for Wellness Industries     Partially Free   (Followers: 1)
International Journal of Environment, Agriculture and Biotechnology     Open Access   (Followers: 5)
International Journal of Functional Informatics and Personalised Medicine     Hybrid Journal   (Followers: 4)
International Journal of Medicine and Biomedical Research     Open Access   (Followers: 1)
International Journal of Nanotechnology and Molecular Computation     Full-text available via subscription   (Followers: 3)
International Journal of Radiation Biology     Hybrid Journal   (Followers: 4)
Iranian Journal of Biotechnology     Open Access  
ISABB Journal of Biotechnology and Bioinformatics     Open Access  
Italian Journal of Food Science     Open Access   (Followers: 1)
JMIR Biomedical Engineering     Open Access  
Journal of Biometrics & Biostatistics     Open Access   (Followers: 3)
Journal of Bioterrorism & Biodefense     Open Access   (Followers: 6)
Journal of Petroleum & Environmental Biotechnology     Open Access   (Followers: 1)
Journal of Advanced Therapies and Medical Innovation Sciences     Open Access  
Journal of Advances in Biotechnology     Open Access   (Followers: 5)
Journal Of Agrobiotechnology     Open Access  
Journal of Analytical & Bioanalytical Techniques     Open Access   (Followers: 7)
Journal of Animal Science and Biotechnology     Open Access   (Followers: 4)
Journal of Applied Biomedicine     Open Access   (Followers: 2)
Journal of Applied Biotechnology     Open Access   (Followers: 2)
Journal of Applied Biotechnology Reports     Open Access   (Followers: 2)
Journal of Applied Mathematics & Bioinformatics     Open Access   (Followers: 5)
Journal of Biologically Active Products from Nature     Hybrid Journal   (Followers: 1)
Journal of Biomaterials and Nanobiotechnology     Open Access   (Followers: 6)
Journal of Biomedical Photonics & Engineering     Open Access  
Journal of Biomedical Practitioners     Open Access  
Journal of Bioprocess Engineering and Biorefinery     Full-text available via subscription  
Journal of Bioprocessing & Biotechniques     Open Access  
Journal of BioScience and Biotechnology     Open Access  
Journal of Biosecurity Biosafety and Biodefense Law     Hybrid Journal   (Followers: 3)
Journal of Biotechnology     Hybrid Journal   (Followers: 63)
Journal of Biotechnology and Strategic Health Research     Open Access   (Followers: 1)
Journal of Chemical and Biological Interfaces     Full-text available via subscription   (Followers: 1)
Journal of Chemical Technology & Biotechnology     Hybrid Journal   (Followers: 9)
Journal of Chitin and Chitosan Science     Full-text available via subscription   (Followers: 1)
Journal of Colloid Science and Biotechnology     Full-text available via subscription  
Journal of Commercial Biotechnology     Full-text available via subscription   (Followers: 6)
Journal of Crop Science and Biotechnology     Hybrid Journal   (Followers: 3)
Journal of Ecobiotechnology     Open Access  
Journal of Essential Oil Research     Hybrid Journal   (Followers: 2)
Journal of Experimental Biology     Full-text available via subscription   (Followers: 25)
Journal of Genetic Engineering and Biotechnology     Open Access   (Followers: 5)
Journal of Ginseng Research     Open Access  
Journal of Industrial Microbiology and Biotechnology     Hybrid Journal   (Followers: 18)
Journal of Integrative Bioinformatics     Open Access  
Journal of Medical Imaging and Health Informatics     Full-text available via subscription  
Journal of Molecular Biology and Biotechnology     Open Access  
Journal of Molecular Microbiology and Biotechnology     Full-text available via subscription   (Followers: 13)
Journal of Nano Education     Full-text available via subscription  
Journal of Nanobiotechnology     Open Access   (Followers: 4)
Journal of Nanofluids     Full-text available via subscription   (Followers: 1)
Journal of Organic and Biomolecular Simulations     Open Access  
Journal of Plant Biochemistry and Biotechnology     Hybrid Journal   (Followers: 4)
Journal of Science and Applications : Biomedicine     Open Access  
Journal of the Mechanical Behavior of Biomedical Materials     Hybrid Journal   (Followers: 13)
Journal of Trace Elements in Medicine and Biology     Hybrid Journal   (Followers: 1)
Journal of Tropical Microbiology and Biotechnology     Full-text available via subscription  
Journal of Yeast and Fungal Research     Open Access   (Followers: 1)
Marine Biotechnology     Hybrid Journal   (Followers: 4)
Meat Technology     Open Access  
Messenger     Full-text available via subscription  
Metabolic Engineering Communications     Open Access   (Followers: 4)
Metalloproteinases In Medicine     Open Access  
Microbial Biotechnology     Open Access   (Followers: 10)
MicroMedicine     Open Access   (Followers: 3)
Molecular and Cellular Biomedical Sciences     Open Access   (Followers: 1)
Molecular Biotechnology     Hybrid Journal   (Followers: 13)
Molecular Genetics and Metabolism Reports     Open Access   (Followers: 3)
Nanobiomedicine     Open Access  
Nanobiotechnology     Hybrid Journal   (Followers: 2)

        1 2 | Last

Journal Cover
American Journal of Polymer Science
Number of Followers: 33  

  This is an Open Access Journal Open Access journal
ISSN (Print) 2163-1344 - ISSN (Online) 2163-1352
Published by SAP Homepage  [105 journals]
  • Preparation and Characterization of Polyisocyanurate Modified Polyimide
           Foam

    • Abstract: Publication year: 2018Source: American Journal of Polymer Science, Volume 8, Number 2Ganiyu K. Latinwo, Samuel E. Agarry, Bukola K. Olopade, Vincent E. Efeovbokhan, Jimoh O. HamedPoly (isocyanurate-imide)s (PIR-PI)s foams have been prepared from the reaction of polyimide (PI) and polyisocyanurate (PIR) prepolymers with different weight ratios of PIRs. The synthesis involve a two stage reaction process, in which firstly, a polyamic acid was produced from a polycondensation of pyromellitic dianhydride (PMDA) and 4,4’-oxydianiline (ODA) in the presence of isoquinoline (IQ), benzoic acid and dimethyl formamide (DMF). The polyamic acid was thermally imidized at 190°C to produce the PI precursor which was reacted with PIR prepolymer produced from the trimerization of 6.3 equivalents isocyanate and 1 equivalent polyol with -tris (3-dimethylaminopropyl) hexahydro-s-triazine as catalyst. The PIR-PIs were characterized by infrared spectroscopy, thermal gravimetric (TGA), differential thermogravimetric (DTG), and solubility analyses. The PIR-PI foams were soluble in polar aprotic solvent only on heating, soluble in H2SO4 at room temperature, but insoluble in acetone. The PIR-PI foams showed excellent thermal stabilities. The temperature of T5% ranged from 328 – 350°C and the residual weights (Rw) were more than 40% at 450°C. The study revealed that presence of phenyl groups and imide structures in the PIR-PI backbone can improve thermal stability.
       
  • Reinforcement of High Density Polyethylene with Snail Shell Powder

    • Abstract: Publication year: 2018Source: American Journal of Polymer Science, Volume 8, Number 1Pauline U. Chris-Okafor, Caleb C. Okonkwo, Martin S. OhaekeThe effects of snail shell powder on the mechanical properties and morphology of high density polyethylene, HDPE /snail shell powder composites were studied. The snail shell powder of particle size 83µm was incorporated into HDPE polymer resins at varying percentages of 0%, 5%, 15% and 25%. The test samples were prepared by using injection moulding machine. The mechanical and morphological properties of high density polyethylene/snail shell powder composites have been characterised by an Instron machine in accordance with ASTM standard and optical microscopy respectively. From the results, hardness was observed to increase while the tensile strength, flexural strength and elongation at break decreased as the filler load increased. The result of the optical microscopy showed that the composites are more compatible than the unfilled composites. The filler improves the compatibility by finely dispersing the filler in the polymer matrix and a better interaction adhesion between the polymer matrix and filler particles.
       
  • Influence of Composition and Structure on the Property of
           Radiation-Chemical Vulcanizates on the Basis of the Combination of
           Copolymer of EPM-NBR in the Presence of Bis - Phenylmaleimide and Triazine
           Compounds

    • Abstract: Publication year: 2018Source: American Journal of Polymer Science, Volume 8, Number 1Sh. M. Mammadov, S. V. Rzayeva, O. H. Akperov, E. N. Ahmadov, T. N. Agayev, E. O. Akperov, R. F. Khankishiyeva, S. Z. Malikova, R. R. MammadovaIt was studied the role of 4,4-dithio-bis-phenylmaleimide (DTBFM) and metal oxides (CaO, MgO, ZnO, CdO) in EPM-NBR polymer system under radiation peroxide vulcanization. With the help of mechanochemical analyzes, the elastomeric mixtures were plasticized at low temperatures with the participation of metal oxide. It was shown by the method of sol-gel analysis that the cross-linking of EPM-NBR polymer system proceeds slowly in the absence of metal oxides, the acceleration of crosslinking process of EPM-NBR polymer systems is observed only in the presence of MgO and ZnO. The spatial network parameters were determined: emergence of the yield of cross-link (1\Mc) and crosslinked molecules (1\Mnτ) in the presence of DTBFM. 2,4-diamino-6-phenyl s-triazine (DAFST) was used as the sensitizer. It was established that from the obtained combinations of the sensitizer (DAFST), the accelerator of crosslinking of DTBFM at 500 kGy dose of irradiation, forming cross-links of C-C bonds, provides elastomeric materials, resistant to aggressive media.
       
  • Novel Thermoplastic Vulcanizates Prepared by Dynamic Vulcanization:
           Undergraduate Experiments for Polymers

    • Abstract: Publication year: 2018Source: American Journal of Polymer Science, Volume 8, Number 1Zhaobo Wang, Baoxiang Wang, Zhiyan Guo, Tong Liu, Yalong Shao, Fanglin DuNovel thermoplastic vulcanizates (TPVs) based on high impact polystyrene (HIPS)/high vinyl polybutadiene rubber (HVPBR) blends were prepared by dynamic vulcanization where styrene-butadiene-styrene (SBS) block copolymer was used as a compatibilizer. The effect of SBS dosage on the mechanical properties of the TPVs was investigated. Compared with those of HIPS/HVPBR blends, the tensile strength, elongation at break and tearing strength of HIPS/HVPBR blend with 12 phr SBS incorporation were improved remarkably. The morphological evolution during the dynamic vulcanization was observed by field-emission scanning electron microscopy (FE-SEM). Energy dispersive X-ray microanalysis system (EDX) was used to confirm that the protruding particles in the etched TPV surface were the vulcanized HVPBR particles.
       
  • Application of DSC in the Study of Thermal History of Cable Insulation
           Wire

    • Abstract: Publication year: 2017Source: American Journal of Polymer Science, Volume 7, Number 3Armaya’u Usman, Zakariyya Uba ZangoApplication of Differential scanning Calorimetry (DSC) was employed to study the thermal history of cable insulation wire. Samples of pre-heated and non-pre-heated polymer sample of the cable wire were analysed. From the DSC curves plotted against temperature on both pre-heated and non-pre-heated samples there are considerable differences in the curves. Moreover, the pre-heated curves obtained for pre-heated sample at 50 K/min heating rate shows very distinct similarities, the glass transition occurs at 130°C in all the samples. Two major endothermic peaks of melting and decomposition stages at different stages of temperatures between 337.2°C and 347.7°C where observed and a decomposition transition temperatures between 446.1°C and 448.6°C. These were found to be absent in the curves of the non-pre-heated sample which has only a melting transition stage. Observing the entire DSC curves and the graphs plotted, it can be seen that DSC too showed a clear difference on the thermal history of the two different cable wire samples.
       
  • Polymeric Compositions on the Base of Acrylic Acid and Bentonite Clay

    • Abstract: Publication year: 2017Source: American Journal of Polymer Science, Volume 7, Number 2M. A. Mahkamov, M. G. MuhkamedievIn this investigations some peculiarities of obtaining composition hydrogels (CH) on the base of cross-linked polyacrylic acid (PAAc) and bentonite clay (BC) were investigated. Optical microscopy and X ray diffraction have shown that in CH’s destruction of crystalline structure of montmorillonite has carried out owing to penetrative of polymeric macromolecules between bundle layers in result of which CHs have a uniform homogeneous structure. The kinetics of swelling of obtained CH in water was investigated and it was shown that they have a high sorption ability to water in wide interval of pH. Sorption of methylene blue (MB) by gels from water solutions was investigated by statistical method. It was determined that sorption ability of CHs was higher than by hydrogels on the base of PAAc. Sorption of MB has increased with increasing temperature of medium and consequently the bonding of MB by CHs has carried out owing to chemisorption.
       
  • Effect of Pressure on the Separation of Ethylene from Ethylene/Ethane Gas
           Mixture Using Hollow Fiber Membrane

    • Abstract: Publication year: 2017Source: American Journal of Polymer Science, Volume 7, Number 2Nayef Ghasem, Mohamed Al-Marzouqi, Nadia ShetaThe aim of this work is to study the effects of pressure, gas flow rates, liquid flow rates and silver nitrate concentration on the separation of ethylene/ethane gas using hollow fiber membrane contactor. A mathematical model is developed; the model considers the gas solubility as a function of pressure, temperature and silver nitrate concentration. The model is validated by the accomplished experimental data. The results of model predictions and the experimental data are in excellent agreement. The obtained results indicated that ethylene/ethane separation increases with increasing the inlet gas pressure to certain extent, silver nitrate concentration and liquid flow rates.
       
  • Influence of Gamma Irradiation on Structure and Properties of
           Nitrile-Butadien Rubber in Presence of Modified Nano Metals

    • Abstract: Publication year: 2017Source: American Journal of Polymer Science, Volume 7, Number 2Mammadov S. M., Khankishiyeva R. F., Ramazanov M. A., Akbarov O. H., Akbarov E. O., Akhundzada H. N.Polymer-based nanocomposites NBR in the presence of nanoscale zinc oxide powder were obtained the crosslinking agent disulfochlorid benzene (DSCB) and carbon black. The role of ZnO nanopowders and DSCB in NBR systems NBR+ZnO+DSCB and NBR+ZnO+DSCB+F324 with radiation, chemical exposure. With the help of physico-chemical and spectral methods shown changes in the molecular structure of the rubber NBR, in the presence of ZnO nanopowders and DSCB. Each studied nanocomposites have been identified by and the emergence of cross-linking and cross-linking yield in the rubber. It is shown that the presence of the chemical interaction between polar groups of the macromolecule BNK (-C≡N) DSCB (C-Cl) nano particles of zinc oxide leads to a significant change in the density of spatial grid nanoexamples that provides an increase in the output of cross-links (1/Ms). Shown properties of filled nanocomposites prepared by chemical bonds (C-C) to modify the mechanical properties in the 423K and 500kGy. Especially, conductive properties of nanocomposites are identified based on NBR. It is found that the change in the value of dielectric permittivity (ε) and dielectric losses (tgδ) material depends on chemical reactions of the polymer structure.
       
  • Comparative Physicochemical Characterization of Chitosan from Shells of
           Two Bivalved Mollusks from Two Different Continents

    • Abstract: Publication year: 2017Source: American Journal of Polymer Science, Volume 7, Number 1Stephen O. Majekodunmi, Emmanuel O. Olorunsola, Cynthia C. UzoaganobiThe need to turn seafood wastes that hitherto constitute an environmental pollution into important pharmaceutical excipients is gaining ground worldwide. This study investigated the extraction and characterization of chitosan from two oyster shells: Mytilus edulis and Laevicardium attenuatum from different continents. Demineralization and deproteinization were carried out to obtain chitin from the shells, followed by deacetylation to obtain chitosan. Percent yield, degree of deacetylation and other physicochemical characteristics were determined for the extracted chitosan from the two oyster shells. The yield of chitosan from Mytilus edulis was 51.8% and 43.8% from Laevicardium attenuatum. The degree of deacetylation (DD) of chitosan from Mytilus edulis was 69.6% while that of Laevicardium attenuatum was 37.3%. The Laevicardium attenuatumchitosan had higher swelling ratio. Calcium was the predominant metal ion in the two chitosan. While the micrograph of Mytilus edulis chitosan showed a non-uniform particle distribution, Laevicardium attenuatum chitosan showed a brick-like structure. This work has shown that it is more economical to produce chitosan from Mytilus edulis, and the polymer has higher degree of deacetylation. The higher degree of deacetylation implies better solubility and the chitosan could be more suitable as a permeation enhancer. The Laevicardium attenuatumchitosan could be more suitable for sustained release formulation.
       
  • A Review of Synthesis, Characterization and Applications of Functionalized
           Dendrimers

    • Abstract: Publication year: 2017Source: American Journal of Polymer Science, Volume 7, Number 1Ebelegi Newton Augustus, Ekubo Tobin Allen, Ayawei Nimibofa, Wankasi DonbebeDendrimers are multipurpose, nanosized particles that can be functionalized with various chemical procedures. The ability to control and engineer Critical Nanoscale Design Parameters such as architecture, shape, size, rigidity, flexibility, composition and surface chemistry offers a catalog of possibilities for utilizing dendrimers as modules for the thriving Nanotechnology industry. Contributions from researchers with various scientific backgrounds who have worked on different objectives that resulted to several applications of functionalized dendrimers are cited in this review.
       
 
 
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