<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Morlat-Therias, Sandrine</style></author><author><style face="normal" font="default" size="100%">Fanton, Elisabeth</style></author><author><style face="normal" font="default" size="100%">Tomer, Namrata S.</style></author><author><style face="normal" font="default" size="100%">Rana, Sravendra</style></author><author><style face="normal" font="default" size="100%">Singh, R. P.</style></author><author><style face="normal" font="default" size="100%">Gardette, Jean Luc</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Photooxidation of vulcanized EPDM/montmorillonite nanocomposites</style></title><secondary-title><style face="normal" font="default" size="100%">Polymer Degradation and Stability</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">EPDM</style></keyword><keyword><style  face="normal" font="default" size="100%">Nanocomposite</style></keyword><keyword><style  face="normal" font="default" size="100%">photooxidation rate</style></keyword><keyword><style  face="normal" font="default" size="100%">stabilization</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">DEC</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">12</style></number><publisher><style face="normal" font="default" size="100%">ELSEVIER SCI LTD</style></publisher><pub-location><style face="normal" font="default" size="100%">THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND</style></pub-location><volume><style face="normal" font="default" size="100%">91</style></volume><pages><style face="normal" font="default" size="100%">3033-3039</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;The photooxidation of a vulcanized ethylene-propylene-diene monomer (EPDM)/montmorillonite nanocomposite as well as EPDM/nanocomposite with stabilizers was studied under accelerated UV-light irradiation (lambda &amp;gt;= 300 nm, 60 degrees C) for different times. The development of functional groups during oxidation was monitored by infrared spectroscopy. Photodegradation of the neat polymer and composites took place and the increases of absorbance in hydroxyl and carbonyl groups with irradiation times and also the decreases of the EPDM unsaturations were measured. The data indicated that the photooxidation products were not changed in the presence of the nanofiller. However, the presence of MMt was observed to dramatically enhance the rate of photooxidation of EPDM with a shortening of the oxidation induction time, leading to a decrease of the durability of the nanocomposites. On the other hand, it was observed that addition of stabilizers, either Tinuvin P or 2-mercaptobenzimidazole, was efficient in inhibiting the degradative effect of MMt. (c) 2006 Elsevier Ltd. All rights reserved.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">12</style></issue><work-type><style face="normal" font="default" size="100%">Article</style></work-type><custom3><style face="normal" font="default" size="100%">&lt;p&gt;Foreign&lt;/p&gt;</style></custom3><custom4><style face="normal" font="default" size="100%">3.12</style></custom4></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Delor-Jestin, Florence</style></author><author><style face="normal" font="default" size="100%">Tomer, Namrata S.</style></author><author><style face="normal" font="default" size="100%">Singh, Raj Pal</style></author><author><style face="normal" font="default" size="100%">Lacoste, Jacques</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Durability of crosslinked polydimethylsyloxanes: the case of composite insulators</style></title><secondary-title><style face="normal" font="default" size="100%">Science and Technology of Advanced Materials</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">composite insulators</style></keyword><keyword><style  face="normal" font="default" size="100%">durability</style></keyword><keyword><style  face="normal" font="default" size="100%">PDMS</style></keyword><keyword><style  face="normal" font="default" size="100%">post-crosslinking</style></keyword><keyword><style  face="normal" font="default" size="100%">silicone</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">JUN</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">2</style></number><publisher><style face="normal" font="default" size="100%">NATL INST MATERIALS SCIENCE</style></publisher><pub-location><style face="normal" font="default" size="100%">NATL INST MATERIALS SCIENCE, 1-2-1 SENGEN, TSUKUBA-CITY, IBARAKI, 305-0047, JAPAN</style></pub-location><volume><style face="normal" font="default" size="100%">9</style></volume><pages><style face="normal" font="default" size="100%">024406</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Most applications of silicones are linked to their hydrophobic properties and (or) their high resistance to ageing (e. g. thermal ageing and photoageing). However, when placed in extreme environments, these materials can fail as in the case of epoxy/fiber glass composite powerlines insulators, where crosslinked polymethylsyloxanes (PDMSs) are used as the protective envelope (housing) of the insulator. We report on the behavior of both pure/noncrosslinked PDMSs and typical formulations used in industrial insulators, i.e. containing peroxide crosslinked PDMS, alumina trioxide hydrated (ATH) and silica. Special attention is paid on both (i) the sources of potential degradation and (ii) the best analytical methods that can be applied to the study of very complex formulations. (i) Aside from conventional types of ageing such as photo-ageing and thermal, hydrolytic, and service life ageings, treatments with acidic vapors, plasma and ozone possibly generating species from the reaction of a high electric field with air were also performed, which allowed to accelerate electrical and out-door ageings and to obtain differently aged materials. (ii) Aside from conventional analytical methods of polymer degradation such as FTIR/ATR spectroscopy and SEC, TG, hardness measurements, more specific methods like photo/DSC, TG/IR, thermoporosimetry, resistivity and density measurements were also performed to characterize the chemical and physical evolutions of polymer materials. In particular, it was found that treatment with nitric acid vapor has detrimental effects on the properties of both fire retardants (e. g. ATH) and PDMSs, affecting the hardness and resistivity of the formulated material.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">2</style></issue><work-type><style face="normal" font="default" size="100%">Article</style></work-type><notes><style face="normal" font="default" size="100%">International Conference on Magneto-Science, Hiroshima, JAPAN, NOV, 2007</style></notes><custom3><style face="normal" font="default" size="100%">Foreign</style></custom3><custom4><style face="normal" font="default" size="100%">3.433</style></custom4></record></records></xml>