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Fabrication of nanocomposite membrane composed of sulfonated PVDF and thermo-mechanically modified fly ash for application in direct methanol fuel cells
Springer Science and Business Media LLC - Tập 30 - Trang 1-18 - 2023
The present work deals with the fabrication of cost-efficient nanocomposite proton exchange membrane (PEM), prepared by incorporation of nanoparticles of Fly Ash (FA) collected from M/s Bina thermal power plant Madhya Pradesh India; within the host PVDF [poly(vinylidene fluoride)] polymer matrix. Subsequently, the nanocomposite membranes are treated with the well-known sulfonating agent chlorosulf......
The production of poly(3-hydroxybutyrate) by thermophilic Caldimonas manganoxidans from glycerol
Springer Science and Business Media LLC - Tập 25 - Trang 1-8 - 2018
Glycerol is an abundant and inexpensive raw material, suitable for the use in fermentation as value adding to agricultural waste. To fully understand how to convert both pure and refined glycerol into Poly(3-hydroxybutyrate) (PHB) using thermophilic Caldimonas manganoxidans. A high PHB concentration can be obtained by using the following fermentation conditions: un-buffered initial pH of 7 and 50 ......
Synthesis and characterization of dual responsive graft copolymers composed of casein and poly(N-isopropylacrylamide)
Springer Science and Business Media LLC - Tập 19 - Trang 1-10 - 2012
A series of novel temperature- and pH- responsive water-soluble graft copolymers, casein-g-poly(N-isopropylacrylamide)(PNIPAAm), were prepared via a direct graft copolymerization of N-Isopropylacrylamide (NIPAAm) from casein. The polymerization was induced by tert-butyl hydroperoxide (TBHP) in water at general condition. Chemical structures of the graft copolymers were characterized by Fourier tra......
Poly(amide-imide) bearing imidazole groups/sulfonated polyimide blends for low humidity and medium temperature proton exchange membranes
Springer Science and Business Media LLC - Tập 22 - Trang 1-15 - 2015
A poly(amide-imide) (PAI) bearing imidazole groups on the polymer chain was synthesized via direct polycondensation of a synthesized diacid-diimide and 4,4′-(1,4-Phenylenediisopropylidene) bisaniline (PDBA). Diacide-diimide was synthesized by the condensation of an amino acid compound, (S)-(+)-Histidine hydrochloride monohydrate and 3,3′,4,4′-Benzophenone tetracarboxylic dianhydride (BTDA). On the......
Influence of urea on polarization property and mechanical properties of polyvinyl alcohol films for the polarizers
Springer Science and Business Media LLC - Tập 29 - Trang 1-9 - 2022
Poly (vinyl alcohol) (PVA) is an ideal material for preparing the polarizing film because of its excellent transparency and dying properties. In the present work, urea was used to act as a PVA plasticizer to modify the crystallization behavior by controlling the intensity of the intermolecular hydrogen bond. The results had shown that the incorporation of the plasticizer decreased the crystallinit......
Poly(ethylene-co-vinyl acetate)/calcium phosphate nanocomposites: contact angle, diffusion and gas permeability studies
Springer Science and Business Media LLC - Tập 18 - Trang 1277-1285 - 2010
Poly(ethylene-co-vinyl acetate) (EVA) based nanocomposites were prepared by melt mixing in an internal mixer with nanoparticles of calcium phosphate. Contact angle measurements of the composites with water and methylene iodide were measured. Parameters such as total solid surface free energy, work of adhesion, interfacial free energy and spreading coefficient were calculated. The interaction param......
Effects of phenyl-s-triazine moieties on thermal stability and degradation behavior of aromatic polyether sulfones
Springer Science and Business Media LLC - Tập 19 - Trang 1-8 - 2012
The effect of the incorporation of phenyl-s-triazine units into the main chain of phthalazinone-based polyether sulfones on initial decomposition temperature, activation energy, thermal-mechanical property and possible degradation mechanism has been investigated. To this purpose, decomposition of poly(phthalazinone ether sulfone phenyl-s-triazine) copolymers (PPESPs) of different monomer compositi......
Modifying polysulfone into a bidentate Schiff base type macromolecular ligand and study on photoluminescence property of polymer–rare earth complexes of Eu(III) and Tb(III)
Springer Science and Business Media LLC - Tập 23 Số 12 - 2016
Synthesis of new unsymmetrical diamine and polyimides: structure–property relationship and applications of polyimides
Springer Science and Business Media LLC - Tập 19 - Trang 1-9 - 2012
A novel unsymmetrical diamine monomer 4-(2-(4-(4-aminophenoxy)phenyl)propan-2-yl)benzenamine (APPBA) containing –O– and –C(CH3)– groups was synthesized from 2-(4-aminophenyl)-2-(4-hydroxyphenyl)propane and 4-nitrofluorobenzene by the nucleophilic substitution reaction followed by catalytic reduction. Polycondensation of this diamine with aromatic dianhydrides through thermal solution imidization t......
In-vitro and in-vivo assessment of Polycaprolactone-Chitosan-Pectin imbibed nanofiber potentials as a wound healing biomaterial
Springer Science and Business Media LLC - - 2023
The goal of the current study was to evaluate the wound healing potential of electrospun Polycaprolactone—Chitosan—Pectin (PCL-CS-PEC composite nanofiber under in vitro and in vivo conditions in order to determine their appropriateness for its use as wound dressings. 15%, 17%, and 19% PCL-CS-PEC scaffolds were fabricated individually and subjected to various investigations such as hemolysis, swell......
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