DIELECTRIC-RELAXATION SPECTROSCOPY IN PHEA HYDROGELS

被引：35

作者：

KYRITSIS, A

PISSIS, P

RIBELLES, JLG

PRADAS, MM

机构：

[1] UNIV POLITECN VALENCIA,DEPT APPL THERMODYNAM,E-46071 VALENCIA,SPAIN

[2] NATL TECH UNIV ATHENS,DEPT PHYS,GR-15773 ATHENS,GREECE

[3] UNIV ATHENS,DEPT PHYS,GR-15771 ATHENS,GREECE

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1994年 / 172卷

关键词：

D O I：

10.1016/0022-3093(94)90619-X

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Poly(hydroxyethyl acrylate) hydrogels with water contents varying in a wide interval are studied with differential scanning calorimetry and thermally stimulated depolarization currents (TSDC). The TSDC measurements reveal the influence of water on the secondary relaxations and suggest an additional mechanism due to reorientation of water molecules when the water content (dry basis) is higher than 0.3. The dependence of the glass transition temperature and the intensity and temperature of the main dielectric relaxation have been determined as a function of the water content.

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页码：1041 / 1046

页数：6

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