Dielectric relaxation spectroscopy of poly(ethylene terephthalate)

被引：9

作者：

Pratt, GJ ^{[1
]}

Smith, MJ ^{[1
]}

机构：

[1] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England

来源：

POLYMER INTERNATIONAL | 2002年 / 51卷 / 01期

关键词：

dielectric spectroscopy; crystallinity; poly(ethylene terephthalate); relaxation processes; asymmetry; constrained amorphous phase;

D O I：

10.1002/pi.785

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Contour maps of dielectric loss tangent within the ranges 0.1Hz to 3MHz and -175degreesC to +190degreesC are presented for a commercial poly(ethylene terephthalate) (PET) in two initial states of crystallinity. Individual absorption regions resemble those for poly(butylene terephthalate) and are attributed to carbonyl-driven alpha- and beta-relaxation processes and to Maxwell-Wagner-Sillars polarizations. Possible causes are considered for the asymmetry and structure apparent in the alpha-peak of partially crystalline PET. (C) 2001 Society of Chemical Industry.

引用

页码：21 / 26

页数：6

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