WATER IN METHACRYLATES .1. SORPTION AND DESORPTION PROPERTIES OF POLY(2-HYDROXYETHYL METHACRYLATE-CO-GLYCOL DIMETHACRYLATE) NETWORKS

被引：57

作者：

ALLEN, PEM ^{[1
]}

BENNETT, DJ ^{[1
]}

WILLIAMS, DRG ^{[1
]}

机构：

[1] UNIV ADELAIDE,DEPT CHEM ENGN,ADELAIDE,SA 5001,AUSTRALIA

来源：

EUROPEAN POLYMER JOURNAL | 1992年 / 28卷 / 04期

关键词：

D O I：

10.1016/0014-3057(92)90252-W

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Sorption and desorption kinetics of water in copolymers of 2-hydroxyethyl methacrylate with ethylene glycol dimethacrylate and oligo (ethylene glycol) dimethacrylates are reported and analysed in terms of Fick's and Frisch's laws. Sorption kinetics range from Fickian to Alfrey Case II with the Frisch parameter n ranging from 0.5-0.9 In desorption, n was less than 0.5 in non-Fickian cases. Diffusivities calculated according to Fick's law are reported. The results are consistent with the dual mode sorption mechanism, i.e. penetration into voids or low density domains followed by redistribution as the high density domains soften and relax.

引用

页码：347 / 352

页数：6

共 38 条

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