Bentonite clay/poly(vinyl alcohol) (PVA) inorganic/organic hybrid nanocomposite membranes were prepared via solvent casting method. A series of PVA have been by varying the concentration bentonite clay. Nanoscale dispersion clay affected properties PVA. with 5 wt % showed better enhancement in properties. Both X-ray diffration and transmission electron microscopy uniform exfoliated structure membranes. The effective separation azeotropic composition isopropanol (IPA) water mixtures was also...

Natural fibres are a good reinforcing material. Among the various natural fibres, sisal fibre is of particular interest, since its composites have high impact strength besides having moderate tensile and flexural properties compared to other ligno-cellulosic fibres. Sisal promising reinforcement for use in on account low cost, density, specific modulus, no health hazards, easy availability some countries renewability. The present work focused recent developments field reinforced phenol...

Abstract Polymer membrane based gas transport and pervaporation processes are fast growing areas in separation technology have received wide attention as of ‘clean technology’. Mechanically stable novel polyhedral oligomeric silsesquioxane (POSS) embedded poly(vinyl alcohol) (PVA)/poly(ethylene oxide) (PEO) blend membranes were prepared by solution blending followed casting. The addition carboxymethyl cellulose enhanced the interfacial activities PVA PEO blends. peripheral organic...

Poly(ethylene terephthalate)-single-walled carbon nanotube (PET-SWNT) nanocomposite fibers have been prepared through melt spinning and drawing. While acting as effective nucleating agents for PET crystallization, SWNTs also provide significant reinforcement to fibers. For example, the tenacity initial modulus of composite fiber with 1 wt% were, respectively, 1.8 times 3.2 higher compared those pristine under identical conditions. When draw ratio was increased, indicating that drawing...

Nanocomposites having multifunctional properties with simultaneous improvement in thermal, mechanical and dielectric along improved ferroelectric signature are of considerable interest due to the rapidly growing need technological aspect. In present work, microwave reduced graphene oxide (mRGO)/fluoroelastomer nanocomposites enhanced performance characteristics were developed. mRGO was synthesized from natural graphite via GO confirmed by analyzing chemical changes using X-ray diffraction...

ABSTRACTIn the present study, a novel poly(vinyl alcohol) membrane system was developed by systematic approach for pervaporation separation of water–isopropanol azeotropic mixtures. Poly(vinyl with 5 vol% cross-linked membranes showed water permeance 4166 gpu intrinsic selectivity 47. To further enhance efficiency hydrophilic nanofiller, bentonite nanoclay, is reinforced (5 glutraldehyde) membranes. The increased to 8232 gpu, which 100% more than that Membrane and overall performance also...

ABSTRACT Cage ‐ structured polyhedral oligomeric silsesquioxane (POSS) molecules were used as modifiers in the fabrication of poly(vinyl alcohol) (PVA) membrane for separation an azeotropic mixture tetrahydrofuran (THF) and water system. Poly(ethylene glycol) anionic octa(tetramethyl ammonium)‐functionalized POSS this study. The membranes exhibited excellent selectivity permeance because their preferential interactions toward THF–water mixture. In presence poly(ethylene glycol)–POSS...

This study reveals the effect of hydrophilic bentonite nanoclay on pervaporation separation azeotropic composition water and 1,4‐dioxane. The permselectivity membrane increased with filler concentration was selective toward at minimum loading. intrinsic properties such as permeance selectivity crosslinked poly(vinyl alcohol) (PVA) 2 wt% membranes showed 443 (532% increment than that pristine membranes) 4,675 gas permeation unit which is significantly higher compared to earlier literature....

Abstract Blends of ethylene propylene diene monomer rubber (EPDM) and chlorinated isobutylene isoprene (chlorobutyl, CIIR) with a reactive phenolic resin as the curing agent have been prepared through conventional two-roll mill mixing. The effect on mechanical properties EPDM/CIIR blends was investigated compared systems. morphology well their thermal steam aging resistance has also reported. It found that system exhibited superior potential applications in high-temperature engineered...

In this report, we demonstrate that both mechanical behaviour and thermal stability of polybutadiene rubber (PBR) nanocomposites could be improved by incorporating exfoliated graphite (EG) using melt mixing method. Incorporation the filler EG in (PBD) matrix is confirmed infrared spectra X-ray diffraction analysis. The structural characteristics, properties these newly modified PBR were systematically analysed studied. Thermal studied thermogravimetric analysis under nitrogen atmosphere....

Bentonite nanoclay reinforced Poly (vinyl alcohol) (PVA) nanocomposite membranes were used for the separation of azeotropic composition water – ethanol mixtures by pervaporation process. Fourier transform infrared (FTIR) spectroscopic studies revealed interaction bentonite and PVA matrix. The dispersion distribution in polymer matrix was demonstrated transmission electron microscopic analysis (TEM). intrinsic membrane properties with filler loading also investigated. results indicate that...

Cyanate esters are thermally resistant thermosetting resins with low dielectric constant, moisture absorption, high glass transition temperature and can be tuned for different mechanical, thermal electrical properties. In this work, compositions (0%, 1%, 3% 5%) of zeolite nanoparticles incorporated cyanate ester composites were synthesised by Hand Lay-Up method followed compression moulding. Curing was done at 200°C half an hour. Mechanical properties like tensile strength, flexural modulus...