Temperature dependence of photoinduced birefringence in polystyrene doped with Disperse Red-1

dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorUniversidade de São Paulo (USP)
dc.date.accessioned2014-05-20T15:21:29Z
dc.date.available2014-05-20T15:21:29Z
dc.date.created2014-05-20T15:21:29Z
dc.date.issued2002-11-25
dc.identifierMacromolecular Rapid Communications. Weinheim: Wiley-v C H Verlag Gmbh, v. 23, n. 16, p. 948-951, 2002.
dc.identifier1022-1336
dc.identifierhttp://hdl.handle.net/11449/32614
dc.identifier10.1002/1521-3927(200211)23:16<948
dc.identifierWOS:000180055500002
dc.description.abstractA theoretical model on the basis of the free-volume concept is presented explaining the temperature dependence of photoinduced birefringence in polystyrene films that contain Disperse Red-1. Birefringence increases with temperature up to 180 K as the free volume for isomerization increases, and then decreases as thermally activated processes dominate. The fast process of birefringence decay has a time constant that increases with temperature at low temperatures, due to the change kin photoisomerization.
dc.languageeng
dc.publisherWiley-Blackwell
dc.relationMacromolecular Rapid Communications
dc.relation4.441
dc.relation1,452
dc.rightsAcesso restrito
dc.sourceWeb of Science
dc.subjectDisperse Red-1
dc.subjectfree volume
dc.subjectisomer/isomerization
dc.subjectphotoinduced birefringence
dc.subjectpolystyrene
dc.titleTemperature dependence of photoinduced birefringence in polystyrene doped with Disperse Red-1
dc.typeArtículos de revistas


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