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Molecular Evolution of Polymers through Photoageing: A New UV in situ Viscoelastic Technique
Author(s) -
Verney Vincent,
Commereuc Sophie
Publication year - 2005
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200500073
Subject(s) - elastomer , viscoelasticity , polymer , chain scission , in situ , materials science , irradiation , polymer science , bond cleavage , polymer chemistry , composite material , chemistry , physics , catalysis , organic chemistry , nuclear physics
Summary: Dienic elastomers are highly sensitive towards oxidation. During UV exposure, both scission and/or recombination reactions compete which involves an evolution of the molecular structure of the material. We developed an in situ technique to monitor the viscoelastic property changes upon UV irradiation of polymers in a single experiment. We illustrated this photorheology technique in the case of two kinds of elastomers. From our findings, this method is assumed to bring significant new advantages.Photograph of the photorheometer used in this study.