@article {University Grant Commission (UGC)}, title = {Poly(amide-imide)-silica gel hybrids: synthesis and characterization}, journal = {Journal of Macromolecular Science Part A-Pure and Applied Chemistry}, volume = {46}, number = {7}, year = {2009}, month = {MAY}, pages = {PII 909739248}, publisher = {TAYLOR \& FRANCIS INC}, address = {325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA}, abstract = {

{Several poly(amide-imide)-silica gel hybrids containing metal salts were prepared by the sol-gel reaction. Poly(amide-imide)s were prepared by low temperature polycondensation reaction of trimellitic anhydride (TMA) and diisocyanates [

}, keywords = {2, 4-diphenyl thiophene, 5-Bis(4-carboxymethylene phenyl) 3, poly(amide-hydrazide)s, Thermal properties, Yamazaki{\textquoteright}s phosphorylation polycondensation}, issn = {1060-1325}, doi = {10.1080/10601320902797830}, author = {Avadhani, C. V. and Chujo, Y.} } @article { ISI:000272122000010, title = {Polypropylene-organoclay nanocomposites containing nucleating agents}, journal = {Polymer Bulletin}, volume = {63}, number = {6}, year = {2009}, month = {DEC}, pages = {897-909}, publisher = {SPRINGER}, address = {233 SPRING ST, NEW YORK, NY 10013 USA}, abstract = {

Polypropylene/organoclay nanocomposites containing nucleating agents, viz., aluminum hydroxybis[2,2-methylenebis(4,6-di-tert-butylphenyl) phosphate (NA21) and 1,3:2,4-bis(3,4-dimethylbenzylidene)sorbitol (Millad 3988), were prepared by direct melt intercalation in a twin-screw extruder. Nucleating agents were added to polypropylene during compounding and their effect on the properties of the nanocomposites was studied. X-ray diffraction (XRD) and transmission electron microscopy (TEM) exhibited clay layers to be intercalated and partially exfoliated. The expansion of inter-gallery distance of the clay layers was governed by the interaction between polypropylene, compatibilizer, and different nucleating agents. Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) indicated higher thermal stability and crystallization temperature for nanocomposites compared to virgin polymer. Even a small addition of the nanoscale filler with 0.2\% nucleating agents was found to promote concurrently several PP material properties, including improved tensile characteristics, higher Young{\textquoteright}s modulus, increased thermal stability and rate of crystallization.

}, keywords = {Nucleating agents, organoclay, Polypropylene nanocomposites, Thermogravimetric analysis, transmission electron microscopy}, issn = {0170-0839}, doi = {10.1007/s00289-009-0184-2}, author = {Ghugare, S. V. and Govindaiah, P. and Avadhani, C. V.} } @article { ISI:000353754000021, title = {Preparation and characterization of self-photostabilizing UV-durable bionanocomposite membranes for outdoor applications}, journal = {Carbohydrate Polymers}, volume = {123}, year = {2015}, month = {JUN}, pages = {164-173}, publisher = {ELSEVIER SCI LTD}, address = {THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND}, abstract = {

Here, we report a durable and ultraviolet (UV) resistant nanocomposite membrane of chitosan (CS) with effective photostabilization ascribed to Zinc oxide (ZnO) nanoparticles. Zinc oxide nanoparticles were successfully dispersed in the solution of chitosan polymer. The nanocomposite films with the homogenous dispersion of ZnO nanoparticles in the chitosan matrix were obtained by solution casting method and the influence of ZnO nanoparticles as a photostabilizer was studied. The nanocomposite membranes were photoirradiated by polychromatic radiations with lambda \> 300 nm using mercury vapour lamps in SEPAP instrument. The resulting nanocomposite material exhibited excellent UV-resistance in very low percentages of ZnO nanoparticles. The chitosan membranes showed fast degradation attributes than the nanocomposite membranes. ZnO nanoparticles effectively absorbed UV radiations, thus protecting polymer from radiation degradation. The neat and irradiated nanocomposites of chitosan and ZnO nanoparticles (CS/ZnO) were characterized by Fourier Transform Infrared Spectroscopy (FT-IR) spectroscopy for the chemical changes/degradation taking place. Chitosan nanocomposites were further characterized for tensile properties, contact angle measurements and surface morphology. (C) 2015 Elsevier Ltd. All rights reserved.

}, keywords = {Bionanocomposite membrane, Chitosan, Contact angle measurement, Fourier transform infrared spectroscopy, Photostabilization, Zinc oxide nanoparticles}, issn = {0144-8617}, doi = {10.1016/j.carbpol.2014.12.062}, author = {Kushwaha, Omkar S. and Avadhani, C. V. and Singh, R. P.} }