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  Subjects -> ENGINEERING (Total: 2114 journals)
    - CHEMICAL ENGINEERING (179 journals)
    - CIVIL ENGINEERING (157 journals)
    - ELECTRICAL ENGINEERING (89 journals)
    - ENGINEERING (1162 journals)
    - ENGINEERING MECHANICS AND MATERIALS (341 journals)
    - HYDRAULIC ENGINEERING (54 journals)
    - INDUSTRIAL ENGINEERING (53 journals)
    - MECHANICAL ENGINEERING (79 journals)

CHEMICAL ENGINEERING (179 journals)                  1 2     

AATCC Journal of Research     Full-text available via subscription  
ACS Combinatorial Science     Full-text available via subscription   (Followers: 9)
Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials     Hybrid Journal   (Followers: 4)
Acta Polymerica     Hybrid Journal   (Followers: 6)
Additives for Polymers     Full-text available via subscription   (Followers: 21)
Adhesion Adhesives & Sealants     Hybrid Journal   (Followers: 5)
Advanced Chemical Engineering Research     Open Access   (Followers: 9)
Advanced Powder Technology     Hybrid Journal   (Followers: 13)
Advances in Applied Ceramics     Partially Free   (Followers: 3)
Advances in Chemical Engineering     Full-text available via subscription   (Followers: 17)
Advances in Chemical Engineering and Science     Open Access   (Followers: 23)
Advances in Polymer Technology     Hybrid Journal   (Followers: 11)
African Journal of Pure and Applied Chemistry     Open Access   (Followers: 5)
Annual Review of Analytical Chemistry     Full-text available via subscription   (Followers: 9)
Annual Review of Chemical and Biomolecular Engineering     Full-text available via subscription   (Followers: 11)
Anti-Corrosion Methods and Materials     Hybrid Journal   (Followers: 4)
Applied Petrochemical Research     Open Access   (Followers: 3)
Asia-Pacific Journal of Chemical Engineering     Hybrid Journal   (Followers: 6)
Biochemical Engineering Journal     Hybrid Journal   (Followers: 9)
Biomass Conversion and Biorefinery     Partially Free   (Followers: 5)
BMC Chemical Biology     Open Access   (Followers: 4)
Brazilian Journal of Chemical Engineering     Open Access   (Followers: 3)
Bulletin of the Chemical Society of Ethiopia     Open Access   (Followers: 2)
Carbohydrate Polymers     Hybrid Journal   (Followers: 9)
Catalysts     Open Access   (Followers: 7)
Chemical and Engineering News     Free   (Followers: 4)
Chemical and Materials Engineering     Open Access   (Followers: 1)
Chemical and Petroleum Engineering     Hybrid Journal   (Followers: 9)
Chemical and Process Engineering     Open Access   (Followers: 3)
Chemical and Process Engineering Research     Open Access   (Followers: 5)
Chemical Communications     Full-text available via subscription   (Followers: 31)
Chemical Engineering & Technology     Hybrid Journal   (Followers: 24)
Chemical Engineering and Processing: Process Intensification     Hybrid Journal   (Followers: 10)
Chemical Engineering and Science     Open Access   (Followers: 3)
Chemical Engineering Communications     Hybrid Journal   (Followers: 10)
Chemical Engineering Journal     Hybrid Journal   (Followers: 20)
Chemical Engineering Research and Design     Hybrid Journal   (Followers: 16)
Chemical Engineering Research Bulletin     Open Access  
Chemical Engineering Science     Hybrid Journal   (Followers: 13)
Chemical Geology     Hybrid Journal   (Followers: 12)
Chemical Papers     Hybrid Journal   (Followers: 3)
Chemical Product and Process Modeling     Full-text available via subscription   (Followers: 3)
Chemical Reviews     Full-text available via subscription   (Followers: 356)
Chemical Society Reviews     Full-text available via subscription   (Followers: 32)
Chemical Technology     Open Access   (Followers: 5)
ChemInform     Hybrid Journal   (Followers: 3)
Chemistry & Industry     Hybrid Journal   (Followers: 2)
Chemistry Central Journal     Open Access   (Followers: 5)
Chemistry of Materials     Full-text available via subscription   (Followers: 255)
Chemometrics and Intelligent Laboratory Systems     Hybrid Journal   (Followers: 6)
ChemSusChem     Hybrid Journal   (Followers: 7)
Chinese Chemical Letters     Full-text available via subscription   (Followers: 2)
Chinese Journal of Chemical Engineering     Full-text available via subscription   (Followers: 3)
Chinese Journal of Chemical Physics     Hybrid Journal   (Followers: 1)
Coke and Chemistry     Hybrid Journal  
Coloration Technology     Hybrid Journal   (Followers: 1)
Computational Biology and Chemistry     Hybrid Journal   (Followers: 8)
Computer Aided Chemical Engineering     Full-text available via subscription   (Followers: 2)
Computers & Chemical Engineering     Hybrid Journal   (Followers: 7)
CORROSION     Full-text available via subscription   (Followers: 2)
Corrosion Engineering, Science and Technology     Hybrid Journal   (Followers: 22)
Corrosion Reviews     Full-text available via subscription   (Followers: 4)
Crystal Research and Technology     Hybrid Journal   (Followers: 2)
Current Opinion in Chemical Engineering     Open Access   (Followers: 3)
Education for Chemical Engineers     Hybrid Journal   (Followers: 4)
Ekologia : The Journal of Institute of Landscape Ecology of Slovak Academy of Sciences     Open Access  
Eksergi     Open Access  
Emerging Trends in Chemical Engineering     Full-text available via subscription  
European Polymer Journal     Hybrid Journal   (Followers: 41)
Fibers and Polymers     Full-text available via subscription   (Followers: 3)
Fluorescent Materials     Open Access  
Focusing on Modern Food Industry     Open Access   (Followers: 3)
Frontiers of Chemical Science and Engineering     Hybrid Journal   (Followers: 1)
Geochemistry International     Hybrid Journal  
Handbook of Powder Technology     Full-text available via subscription   (Followers: 3)
Heat Exchangers     Open Access   (Followers: 1)
High Performance Polymers     Hybrid Journal  
Indian Chemical Engineer     Hybrid Journal   (Followers: 3)
Indian Journal of Chemical Technology (IJCT)     Open Access   (Followers: 12)
Industrial & Engineering Chemistry     Full-text available via subscription   (Followers: 9)
Industrial & Engineering Chemistry Research     Full-text available via subscription   (Followers: 20)
Industrial Chemistry Library     Full-text available via subscription   (Followers: 4)
Info Chimie Magazine     Full-text available via subscription   (Followers: 2)
International Journal of Chemical and Petroleum Sciences     Open Access   (Followers: 2)
International Journal of Chemical Engineering     Open Access   (Followers: 7)
International Journal of Chemical Reactor Engineering     Full-text available via subscription   (Followers: 3)
International Journal of Chemical Technology     Open Access   (Followers: 4)
International Journal of Chemoinformatics and Chemical Engineering     Full-text available via subscription   (Followers: 2)
International Journal of Food Science     Open Access   (Followers: 3)
International Journal of Industrial Chemistry     Open Access  
International Journal of Polymeric Materials     Hybrid Journal   (Followers: 3)
International Journal of Science and Engineering     Open Access   (Followers: 7)
International Journal of Waste Resources     Open Access   (Followers: 5)
Journal of Chemical Engineering & Process Technology     Open Access   (Followers: 2)
Journal of Applied Crystallography     Hybrid Journal   (Followers: 4)
Journal of Applied Electrochemistry     Hybrid Journal   (Followers: 12)
Journal of Applied Polymer Science     Hybrid Journal   (Followers: 225)
Journal of Biomaterials Science, Polymer Edition     Hybrid Journal   (Followers: 8)
Journal of Bioprocess Engineering and Biorefinery     Full-text available via subscription  
Journal of Chemical & Engineering Data     Full-text available via subscription   (Followers: 10)

        1 2     

Journal Cover   High Performance Polymers
  [SJR: 0.374]   [H-I: 29]   Follow
    
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 0954-0083 - ISSN (Online) 1361-6412
   Published by Sage Publications Homepage  [813 journals]
  • Synthesis and properties of chiral poly(ester-imide)/multiwalled carbon
           nanotube nanocomposites containing
           4,4'-thiobis(2-tert-butyl-5-methylphenol) and s-valine amino acid moieties
           
    • Authors: Mallakpour, S; Soltanian, S.
      Pages: 259 - 266
      Abstract: Chiral poly(ester–imide) (PEI) was synthesized from N-trimellitylimido-S-valine diacid with 4,4'-thiobis(2-tert-butyl-5-methylphenol) by a direct polycondensation method. S-Valine was covalently attached to carboxylated multiwalled carbon nanotubes (MWCNTs) and effectively dispersed in an aromatic polymer as a continuous medium to prepare PEI/MWCNT nanocomposites (NCs). X-ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy, and field-emission scanning electron microscopy were carried out to characterize the obtained NCs. The microstructural study of the NCs showed the homogeneous dispersion of MWCNTs throughout the polymer matrix. The results from thermal analysis indicated that the thermal stability of the NCs was improved, in comparison with that of pure PEI.
      PubDate: 2015-04-09T02:53:22-07:00
      DOI: 10.1177/0954008314544385
      Issue No: Vol. 27, No. 3 (2015)
       
  • Low-melt-viscosity polyether sulfone/polyetherethersulfone copolymers:
           Effect of sequence distribution on rheological property
    • Authors: Yue, X; Jiang, Z.
      Pages: 267 - 273
      Abstract: The rheological, mechanical, and thermal properties of random, alternating, and three block of polyether sulfone/polyetherethersulfone copolymers are compared. These copolymers have similar molecular weights and chemical composition (phenyl:ether:sulfone = 7:4:3). Differential scanning calorimetry and dynamic mechanical analysis results indicate that all copolymers possess extremely close glass transition temperature. On this basis, it is interesting to find that the alternating copolymer exhibits the melt viscosity of 281 Pa·s, which is much lower than those of random copolymer (1641 Pa·s). For block copolymers, the gradual increase with the preceding length increases in melt viscosity. In addition, the stress–strain test curves of copolymers were investigated, which revealed that sequence distribution has important influence on the tensile strengths and elongations at break. All these can be highly related to their different sequence distribution. These results obtained were discussed and interpreted.
      PubDate: 2015-04-09T02:53:22-07:00
      DOI: 10.1177/0954008314544480
      Issue No: Vol. 27, No. 3 (2015)
       
  • Dynamic mechanical and dielectric relaxation studies of chlorobutyl
           elastomer nanocomposites: Effect of nanographite loading and temperature
    • Authors: Tiwari, S. K; Choudhary, R. N. P, Mahapatra, S. P.
      Pages: 274 - 287
      Abstract: Primary and secondary relaxation behavior of chlorobutyl elastomer nanocomposites have been studied as a function of variation in nanographite loading in the temperature range from –100°C to +100°C and in the frequency range of 100–106 Hz respectively. The effect of nanographite loadings on glass transition temperature was marginal for all the composites in the narrow range of –10°C to 10°C. The nonlinearity in tan and storage modulus has been explained on the concept of filler–polymer interaction and aggregation of nanographites. The effect of variation in nanographite loadings on the dielectric relaxation such as complex and real parts of impedance was distinctly visible. The electric modulus formalism has been utilized to further investigate the conductivity and relaxation phenomenon. The frequency dependence of electrical conductivity has been investigated using percolation theory. The phenomenon of percolation in the composites has been discussed based on the measured changes in electrical conductivity. The percolation threshold as studied by electrical conductivity occurred in the vicinity of 4–6 phr of nanographite loading. Cole–Cole, Nyquist plots, and Argand diagram confirm the existence of non-Debye/nonlinear relationship. Scanning electron microscopic images show agglomeration of the nanographite and formation of a continuous network structure.
      PubDate: 2015-04-09T02:53:22-07:00
      DOI: 10.1177/0954008314545137
      Issue No: Vol. 27, No. 3 (2015)
       
  • Organosoluble and optically active polyamides based on axially asymmetric
           9,9'-spirobifluorene moieties
    • Authors: Wu, Z; Han, B, Zhang, C, Zhu, D, Peng, B, Gao, L, Ding, M, Yang, Z.
      Pages: 288 - 298
      Abstract: Optically active polyamides containing axially asymmetric 9,9'-spirobifluorene units in the main chain were synthesized for the first time by low-temperature solution polycondensation of (R)-2,2'-bis(4-amino-2-trifluoromethylphenoxy)-9,9'-spirobifluorene with various diacyl chlorides. All these polymers were obtained in quantitative yields with inherent viscosities of 0.28–0.43 dL g–1. These polyamides were amorphous and readily soluble in many organic solvents such as N-methyl-2-pyrolidone, N, N-dimethylacetamide (DMAc), dimethyl sulfoxide, and tetrahydrofuran. The glass transition temperatures of these polyamides were recorded in the range of 199–261°C by differential scanning calorimetry, and the 10% weight loss temperatures were over 410°C both under nitrogen and in air atmospheres. The specific rotations of these chiral polyamides oscillated between 65.0° and 127.8° depending on the structures of the diacid chlorides. All the optically active polymers exhibited high chiral stability in solid state or in DMAc solvent at high temperature due to incorporation of chiral spirobifluorone unit in polymer backbones. The ultraviolet–visible and circular dichroism spectroscopic properties of these chiral polyamides in solutions were also studied.
      PubDate: 2015-04-09T02:53:22-07:00
      DOI: 10.1177/0954008314545521
      Issue No: Vol. 27, No. 3 (2015)
       
  • Electron beam curing of functionalized N-(4-hydroxy phenyl)maleimide
           monomers: Focus on kinetics of thermal degradation
    • Authors: Pitchaimari, G; Sarma, K. S. S, Varshney, L, Vijayakumar, C. T.
      Pages: 299 - 311
      Abstract: Electron beam (E-beam) curing by different total radiation doses (100, 200, 300 and 400 kGy at 10 kGy per pass) of functionalized maleimides (20%) [N-(4-acryloyloxy phenyl)maleimide, N-(4-methacryloyloxy phenyl)maleimide and N-(4-cyanato phenyl)maleimide] is carried out using N-vinyl-2-pyrrolidone as the reactive diluent (80%). The swelling studies indicate the presence of highly cross-linked structure in the polymer derived from cyanate-functionalized maleimide cured using 400 kGy electron beam (E-beam) irradiation. The thermal stabilities of all the polymers are studied using thermogravimetric analyzer. The materials cured using the highest radiation dose (400 kGy) are found to have better thermal stability compared to other materials cured using lower doses (100, 200 and 300 kGy at 10 kGy per pass). The degradation kinetic studies using the Vyazovkin method showed that the activation energies for the thermal degradation of polymeric materials got by E-beam irradiation of the monomers at 400 kGy are higher. Of all the materials investigated, liquid composition having N-(4-cyanato phenyl)maleimide (20%) and N-vinyl-2-pyrrolidone (80%) cured by E-beam radiation (400 kGy) showed better thermal stability.
      PubDate: 2015-04-09T02:53:22-07:00
      DOI: 10.1177/0954008314545522
      Issue No: Vol. 27, No. 3 (2015)
       
  • Effect of a constant magnetic field (0.4 T) on electromagnetic properties
           of chiral polyaniline
    • Authors: Tang, J; Ma, L, Huo, Q, Yan, J, Gan, M, Xu, F.
      Pages: 312 - 317
      Abstract: Chiral polyaniline doped with d-camphorsulfonic acid (d-CSA) (PANI-(d-CSA)) was synthesized by in situ polymerization in the presence of a constant magnetic field (0.4 T). The micromorphology, conductivity, and electromagnetic properties of chiral polyaniline were systematically investigated using scanning electron microscopy, electrochemical workstation, four-point probe conductivity measurements, and a vector network analyzer. The results showed that when compared with PANI-(d-CSA)-O synthesized in the absence of a magnetic field, PANI-(d-CSA)-M synthesized in the presence of a magnetic field had increased length–diameter ratio, higher conductivity, and stronger electromagnetic loss property. The minimum reflectivity of PANI-(d-CSA)-M reduced by 21.78% and the bandwidth of microwave absorption (reflection loss < –10 dB) of PANI-(d-CSA)-M increased 4.7 times.
      PubDate: 2015-04-09T02:53:22-07:00
      DOI: 10.1177/0954008314545977
      Issue No: Vol. 27, No. 3 (2015)
       
  • Layer-by-layer assembly deposition of graphene oxide on poly(lactic acid)
           films to improve the barrier properties
    • Authors: He, X; Wu, L.-l, Wang, J.-j, Zhang, T, Sun, H, Shuai, N.
      Pages: 318 - 325
      Abstract: Layer-by-layer (LBL) assembly is an innovative method for fabrication of barrier layer structures on flexible polymers. In this work, two kinds of graphene oxide (GO) multilayer membranes with high barrier properties were prepared by applying LBL on poly(lactic acid) (PLA) films. Nanometer-scale GO multilayer membranes were coated on PLA films and their barrier properties were studied via water vapor and oxygen permeabilities. It turns out that a multilayer (polyethyleneimine (PEI)/GO) n PLA film has excellent oxygen barrier properties, and the oxygen permeability of a four-layer PEI/GO deposition is only 0.98% of the pure PLA film, with unsatisfied water vapor barrier properties. Using PEI/hexadecyltrimethylammonium bromide (CTAB)-modified GO assembling layers on the PLA substrate increased the water contact angle of the multilayer PLA film, and water vapor permeability decreased to 59.25% of the pure PLA film. GO nanosheets with better hydrophobicity can be obtained after being modified by CTAB at the same time, at the expense of partial oxygen barrier properties and transparency. This approach provides a new way to develop multilayer membranes with enhanced barrier performance of PLA films and shows significant interest in packaging applications.
      PubDate: 2015-04-09T02:53:22-07:00
      DOI: 10.1177/0954008314545978
      Issue No: Vol. 27, No. 3 (2015)
       
  • Synthesis of N-substituted poly(benzimidazole ketone ketone)s containing
           pyridine rings
    • Authors: Xu, Y; Sun, Y, Lei, Y, Huo, J, Zhang, L.
      Pages: 326 - 331
      Abstract: Poly(N-arylenebenzimidazole ketone ketone pyridine)s have been prepared via N–C coupling reaction that removed the N–H sites from the novel bis(benzimidazoyl) derivatives with activated aromatic difluorides in sulfolane. The reaction was carried out at 210°C in the presence of anhydrous potassium carbonate. The structures of the polymers were characterized by means of Fourier transform infrared and proton nuclear magnetic resonance spectroscopies and elemental analysis. All resulting polymers showed essentially amorphous patterns. Differential scanning calorimetry and thermogravimetric measurements showed that the polymers had high glass transition temperatures (>179°C), good thermostability, and high decomposition temperatures (>401°C). These novel polymers also showed easy solubility.
      PubDate: 2015-04-09T02:53:22-07:00
      DOI: 10.1177/0954008314547967
      Issue No: Vol. 27, No. 3 (2015)
       
  • Potentially eco-friendly poly (amide-ester-imide)/diacid-grafted titanium
           dioxide/modified montmorillonite nanocomposites containing natural amino
           acids: Spectral, morphological, and thermal properties
    • Authors: Mallakpour, S; Khani, M.
      Pages: 332 - 341
      Abstract: The progress of organic/inorganic composite materials has been specifically trendy in the last decade. This article focused on the fabrication and characterization of nanocomposites (NCs) with two different nanoparticles. Poly(amide–ester–imide) (PAEI) matrix was prepared by reacting N,N'-(1,3,5,7-tetraoxo-5,7-dihydropyrrolo[3,4-f]isoindole-2,6(1H,3H)-diyl)bis(4-hydroxybenz-amide) with N-trimellitylimido-l-leucine (TML) via tosyl chloride, pyridine, and N,N-dimethylformamide as a condensing agent. The surface of titanium dioxide (TiO2) nanoparticles was modified with diacid TML. Diacid-grafted TiO2 (D-TiO2) was mixed with the obtained PAEI and sonicated to form a PAEI/D-TiO2 NC. Then, the surface of a sodium montmorillonite (MMT) was modified through intercalation with the cationic surfactant of l-leucine using an ion-exchange mechanism. PAEI/D-TiO2/organically modified montmorillonite composites at three different weight fractions of silicate layer were prepared via solution intercalation method. The spectral, morphological, and thermal properties of the aforementioned NCs were investigated in terms of several experimental techniques, including Fourier transform infrared spectroscopy, field-emission scanning electron microscopy (FESEM), X-ray diffraction, thermogravimetric analysis, and transmission electron microscopy (TEM). The obtained novel NCs improved thermal stability from neat polymer. Photographs showing TEM and FESEM results also illustrated that the nanofillers were rather uniformly distributed in the polymer matrix.
      PubDate: 2015-04-09T02:53:22-07:00
      DOI: 10.1177/0954008314549644
      Issue No: Vol. 27, No. 3 (2015)
       
  • Influence of micro/nanofiller alumina on the mechanical behavior of novel
           hybrid epoxy nanocomposites
    • Authors: Raghavendra, G; Ojha, S, Acharya, S. K, Pal, S. K.
      Pages: 342 - 351
      Abstract: In this work, the influence of micro/nanoalumina (Al2O3) on the mechanical properties of epoxy/jute fiber (J)/glass fiber (G) laminates was studied. All the composites are fabricated by the hand layup technique. The flexural strength and tensile strength of the epoxy/hybrid laminates were increased profoundly in the presence of micro/nano-Al2O3. The epoxy + GJGJ + 4 wt% nano-Al2O3 composites showed better flexural results when compared with the epoxy/glass fiber composites, whereas epoxy + GJJG + 4 wt% nano-Al2O3 composites show better tensile results. It was also found that nanofiller-added composites show better results when compared with and without microfiller-added composites. The morphology of the surfaces was examined by scanning electron microscopy to have better insight into the flexural and tensile mechanism.
      PubDate: 2015-04-09T02:53:22-07:00
      DOI: 10.1177/0954008314550889
      Issue No: Vol. 27, No. 3 (2015)
       
  • Synthesis and characterization: Silicon oxide-coated multiwalled carbon
           nanotubes and properties of composite coating research
    • Authors: He, Y; Chen, C, Zhong, F, Chen, H.
      Pages: 352 - 361
      Abstract: Multiwalled carbon nanotubes (MWCNTs) were acidified with nitration mixture; the silicon oxide-coated MWCNTs (SiO2-MWCNTs) hybrid material was then prepared via the sol–gel method, and the results were verified using scanning electron microscopy (SEM), X-ray diffraction, and thermogravimetric analysis (TGA). We modified the hybrid material with silane coupling agent (KH560) and prepared SiO2-MWCNTs/epoxy, MWCNTs/epoxy composite coating, and the pure epoxy coating, respectively. The impedance performance was tested using electrochemical workstation (electron ionization spray); then, the mechanical properties and thermal stability were tested through the shock experiments and TGA. Finally, we used SEM to observe the coating surface condition. The results show that SiO2-MWCNTs have a good dispersion in the epoxy resin and the mechanical properties and corrosion resistance of SiO2-MWCNTs/epoxy composite coating have enhanced.
      PubDate: 2015-04-09T02:53:22-07:00
      DOI: 10.1177/0954008314551033
      Issue No: Vol. 27, No. 3 (2015)
       
  • Synthesis and characterization of degradable polyimides derived from
           4,6-bis(4-aminophenoxy)pyrimidine
    • Authors: Cui; C.
      Pages: 362 - 370
      Abstract: Polyimides (PIs) are widely applied in the fields of aerospace, membrane, and electronic industries. However, with the fast-growing application, the degradation of polymer has become a serious problem people are confronted with. In this work, a series of novel degradable PIs were prepared from diamine 4,6-bis(4-aminophenoxy)pyrimidine with various commercially available aromatic dianhydrides by a conventional two-stage method. The resulting PIs could degrade fast under methylamine medium in N,N-dimethylacetamide, and the degradation mechanism was speculated by analyzing the degradation products. Compared with the traditional method, a facile and effective method for PI degradation was provided. The results suggested that incorporating 4,6-diphenoxypyrimidine structure into polymer chains may grow up to be a new method for polymer degradation.
      PubDate: 2015-04-09T02:53:22-07:00
      DOI: 10.1177/0954008314551034
      Issue No: Vol. 27, No. 3 (2015)
       
  • Influence of biosafe amino acid-functionalized multiwalled carbon
           nanotubes on the morphology and thermal properties of the
           poly(amide-imide) nanocomposites containing
           N,N'-(pyromellitoyl)-bis-S-valine segments
    • Authors: Mallakpour, S; Abdolmaleki, A, Rostami, M.
      Pages: 371 - 378
      Abstract: In this study, S-valine-functionalized multiwalled carbon nanotubes (f-MWCNTs)/poly(amide–imide) (PAI) bionanocomposites (BNC)s were prepared by a simple ultrasonication-assisted solution blending process. First, carboxylated MWCNTs were functionalized with S-valine to achieve a fine dispersion of f-MWCNT bundles in the PAI matrix due to hydrogen bonding and – stacking interaction between f-MWCNTs and polymer functional groups and aromatic moieties. The existence of S-valine as a biodegradable segment in both f-MWCNTs and optically active PAI provided potentially biodegradable nanocomposites and caused compatibility between f-MWCNTs and the polymer matrix. The obtained BNCs were characterized by Fourier transform infrared spectroscopy, powder X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), and thermogravimetric analysis (TGA). The TEM and FESEM images confirmed good dispersion of f-MWCNTs in the polymer matrix. The results of TGA and XRD analysis suggested that a good thermal stability and dispersion occurred especially with low filler amounts (5 wt%) of f-MWCNTs.
      PubDate: 2015-04-09T02:53:22-07:00
      DOI: 10.1177/0954008314552536
      Issue No: Vol. 27, No. 3 (2015)
       
 
 
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