Brillouin scattering and hypersonic relaxation in amorphous polymers
作者:
G. D. Patterson,
期刊:
Journal of Polymer Science: Polymer Physics Edition
(WILEY Available online 1977)
卷期:
Volume 15,
issue 3
页码: 455-464
ISSN:0098-1273
年代: 1977
DOI:10.1002/pol.1977.180150305
出版商: John Wiley&Sons, Inc.
数据来源: WILEY
摘要:
AbstractMechanical relaxation at hypersonic frequencies is measured using Brillouin spectroscopy for polyisobutylene, atactic polypropylene, polydimethyl siloxane, and polyvinyl acetate. The temperatures of maximum loss determined in the gigahertz range are compared to the published transitions maps for the above polymers. It is found that the hypersonic relaxation data fall on an extrapolation of the secondary main chain glass–rubber relaxation line above the region where the primary and secondary lines merg
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