SWELLING EFFECT OF SEMICRYSTALLINE POLY(VINYL ALCOHOL) IN HYDROGEN-PEROXIDE

被引：11

作者：

LEE, PI ^{[1
]}

机构：

[1] UNIV TORONTO,DEPT CHEM ENGN & APPL CHEM,TORONTO M5S 2S2,ONTARIO,CANADA

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 1991年 / 42卷 / 12期

关键词：

D O I：

10.1002/app.1991.070421201

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The effect of hydrogen peroxide on the physiocochemical properties of semicrystalline poly (vinyl alcohol) (PVA) has been investigated. Significant and irreversible increases in equilibrium water swelling, dissolved oxygen permeability, and surface wettability have been observed in PVA samples treated with concentrated hydrogen peroxide. Based on the small amount of carbonyl content detected and the crystallinity reduction in hydrogen-peroxide-treated poly (vinyl alcohol) samples, a mechanism involving a combination of hydrogen-peroxide-induced oxidative chain scission and dissolution of crystalline regions in poly (vinyl alcohol) is proposed for the observed swelling kinetics and associated changes in polymer properties.

引用

页码：3077 / 3082

页数：6

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