DIELECTRIC-RELAXATION PHENOMENA IN BUTADIENE-ACRYLONITRILE COPOLYMERS

Authors
POSPISIL J LAUDAT J FAHNRICH J HAVRANEK A NESPUREK S
Citation
J. Pospisil et al., DIELECTRIC-RELAXATION PHENOMENA IN BUTADIENE-ACRYLONITRILE COPOLYMERS, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 230, 1993, pp. 435-441
Citations number
8
Categorie Soggetti
Crystallography
Journal title
Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals → ACNP
ISSN journal
1058725X
Volume
230
Year of publication
1993
Pages
435 - 441
Database
ISI
SICI code
1058-725X(1993)230:<435:DPIBC>2.0.ZU;2-5
Abstract
The polarization phenomena of the polybutadiene - acrylonitrile (PBAN) copolymers have been investigated in the vicinity of the glass transi tion region by methods of thermally stimulated depolarization currents (TSDC), thermally stimulated polarization currents (TSPC) and dc cond uctivity. Relaxation regions above the glass transition temperature Tg have been analyzed by thermal sampling and partial depolarization tec hniques in more detail. The effects associated with the cyclizing afte r pyrolysis in PBAN copolymers have been studied by thermally stimulat ed and viscoelastic measurements.