THE POLY(VINYL ALCOHOL) BORATE SYSTEM - INFLUENCE OF POLYELECTROLYTE EFFECTS ON PHASE-DIAGRAMS

被引：65

作者：

KEITA, G ^{[1
]}

RICARD, A ^{[1
]}

AUDEBERT, R ^{[1
]}

PEZRON, E ^{[1
]}

LEIBLER, L ^{[1
]}

机构：

[1] UNIV PARIS 06, ESPCI, PHYSICOCHIM MACROMOLEC LAB, URA 278, F-75231 PARIS, FRANCE

来源：

POLYMER | 1995年 / 36卷 / 01期

关键词：

GEL; POLY(VINYL ALCOHOL); BORATE IONS;

D O I：

10.1016/0032-3861(95)90674-Q

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 formation of a reversible gel by complexation of borate ions with poly(vinyl alcohol) is described. The complexation induces electrostatic charges on the polymeric chains. We focus on the behaviour of the system when the charges are partially screened by a passive salt. In such a case, 're-entrant phases' can be observed; they result from a delicate balance between the electrostatic repulsions among charged complexes formed on the polymeric chain and the crosslinking induced by borate ions. We present here an interpretation of the phase transitions based on a thermodynamic approach.

引用

页码：49 / 54

页数：6

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