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Effect of stretching on the sub-Tg phenylene-ring dynamics of polycarbonate by neutron scattering.

作者信息

Arrese-Igor Silvia, Mitxelena Olatz, Arbe Arantxa, Alegría Angel, Colmenero Juan, Frick Bernhard

机构信息

Centro de Física de Materiales (CSIC-UPV/EHU), Apartado 1072, 20080 San Sebastián, Spain.

出版信息

Phys Rev E Stat Nonlin Soft Matter Phys. 2008 Aug;78(2 Pt 1):021801. doi: 10.1103/PhysRevE.78.021801. Epub 2008 Aug 12.

DOI:10.1103/PhysRevE.78.021801
PMID:18850857
Abstract

We have investigated the effect of cold drawing on the motion of phenylene rings in bisphenol-A polycarbonate by neutron scattering. The intensity scattered by isotropic and stretched polycarbonate is different, the quasielastic broadening being larger for the isotropic sample. This difference can be well accounted for by considering that preferentially oriented rings in the stretched polymer have their motion sterically hindered. The extent of the effect of stretching on the phenylene-ring motion obtained from this neutron-scattering investigation is in good agreement with that obtained when studying the effect of cold drawing on the gamma relaxation by dielectric spectroscopy.

摘要

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