01691nas a2200265   4500008004100000022001400041245012400055210006900179260008600248300001400334490000800348520073300356653000901089653002701098653002301125653001901148100002201167700001301189700001801202700002101220700002401241700001501265700001601280856012901296       2005                        eng d  a1060-132500aSynthesis, characterization, and performance evaluation of polymeric HALS in ethylene-propylene-diene terpolymer (EPDM)0 aSynthesis characterization and performance evaluation of polymer  a325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USAbTAYLOR & FRANCIS INCcAUG  a1037-10460 vA423 a<p>A polymeric hindered amine light stabilizer (HALS), wherein the hindered amine functionality was attached to the maleic anhydride graft ethylene-propylene-diene terpolymer (EPDM) was synthesized. This involves photoinduced grafting of maleic anhydride groups on unsaturated sites of EPDM, followed by incorporation of amino terminated HALS. The grafting and functionalization reactions were characterized by FTIR and C-13 NMR spectroscopy. The surface changes upon degradation are studied by SEM. The photostabilizing efficiency of this polymeric HALS was studied and compared with conventional HALS under accelerated weathering conditions. The HALS grafted EPDM showed significantly improved photostabilizing efficiency.</p>10aEPDM10alight induced grafting10aPhotostabilization10apolymeric HALS1 aLonkar, Sunil, P.1 aRana, S.1 aSingh, R., P.1 aLacoste, Jacques1 aGardette, Jean, Luc1 aJestin, F.1 aBrocord, E.  uhttps://library.ncl.res.in/content/synthesis-characterization-and-performance-evaluation-polymeric-hals-ethylene-propylene-002305nas a2200241   4500008004100000022001400041245012500055210006900180260009900249300001200348490000800360520133900368653003001707653001301737653003001750653004401780653002301824653002901847100002401876700002101900700001801921856012401939       2015                        eng d  a0144-861700aPreparation and characterization of self-photostabilizing UV-durable bionanocomposite membranes for outdoor applications0 aPreparation and characterization of selfphotostabilizing UVdurab  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLANDbELSEVIER SCI LTDcJUN  a164-1730 v1233 a<p>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 &gt; 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.</p>10aBionanocomposite membrane10aChitosan10aContact angle measurement10aFourier transform infrared spectroscopy10aPhotostabilization10aZinc oxide nanoparticles1 aKushwaha, Omkar, S.1 aAvadhani, C., V.1 aSingh, R., P.  uhttps://library.ncl.res.in/content/preparation-and-characterization-self-photostabilizing-uv-durable-bionanocomposite-0