Water absorption and states of water in semicrystalline poly(vinyl alcohol) films

被引：724

作者：

Hodge, RM ^{[1
]}

Edward, GH ^{[1
]}

Simon, GP ^{[1
]}

机构：

[1] MONASH UNIV,DEPT MAT ENGN,CLAYTON,VIC 3168,AUSTRALIA

来源：

POLYMER | 1996年 / 37卷 / 08期

关键词：

water; poly(vinyl alcohol); crystallinity;

D O I：

10.1016/0032-3861(96)81134-7

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Thermal analysis of semicrystalline poly(vinyl alcohol) reveals the existence of up to three energetically distinct states of water within the polymer structure. Wide angle X-ray studies indicate that diffusion of water into semicrystalline samples of the polymer gradually destroys the crystalline regions of the polymer, although water is found to not inhabit intact crystallites. The nonfreezing water is responsible for the destruction of crystalline regions by a mechanism of disruption of intermolecular hydrogen bonds in the interface region between the crystalline and swollen amorphous regions. Water does not inhabit the polymer in clusters as freezable water until most of the inter and intra molecular hydrogen bonding has been disrupted by the nonfreezing water. Copyright (C) 1996 Elsevier Science Ltd.

引用

页码：1371 / 1376

页数：6

共 20 条

[1] CRYSTAL STRUCTURE OF POLYVINYL ALCOHOL [J].