Selected dielectric and relaxation properties of PBT-DFA multiblock elastomers

Authors
Lembicz, F El Fray, M Slonecki, J
Citation
F. Lembicz et al., Selected dielectric and relaxation properties of PBT-DFA multiblock elastomers, MACRO MAT E, 280(7-8), 2000, pp. 54-58
Citations number
10
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
MACROMOLECULAR MATERIALS AND ENGINEERING
ISSN journal
14387492 → ACNP
Volume
280
Issue
7-8
Year of publication
2000
Pages
54 - 58
Database
ISI
SICI code
1438-7492(200008)280:7-8<54:SDARPO>2.0.ZU;2-G
Abstract
The results of experimental investigations of poly(butylene terephthalate)- dimerized fatty acid (PBT-DEA) elastomers using dilatometric measurements, dielectric spectroscopy as well as ultrasonics are presented. Relaxation pr operties of the polymers are characterized in relation to the degree of cry stallization of the hard segments. The variation of the polymer properties with temperature has been ascribed to two relaxation processes glass transi tion (alpha-relaxation) and second order (beta-transition) of the soft phas e of elastomers.