Influence of the COOH and COONa groups and crosslink density of poly(acrylic acid)/montmorillonite superabsorbent composite on water absorbency

被引：124

作者：

Wu, JH ^{[1
]}

Lin, JM ^{[1
]}

Li, GQ ^{[1
]}

Wei, CR ^{[1
]}

机构：

[1] Huaqiao Univ, Inst Phys Mat Chem, Quanzhou 362011, Peoples R China

来源：

POLYMER INTERNATIONAL | 2001年 / 50卷 / 09期

关键词：

superabsorbent composite; poly(acrylic acid); montmorillonite; hydrophilic group; crosslink density;

D O I：

10.1002/pi.728

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A novel poly(acrylic acid)/montmorillonite superabsorbent composite with a water absorbency of 1100 times its own weight was synthesized by the graft copolymerization of acrylic acid with a cross-linking agent in the presence of montmorillonite ultrafine powder. The influence of the amount of crosslinker and montmorillonite on water absorbency has been investigated. It was found that a crosslinker concentration of 0.03wt% and 30wt% montmorillonite gave the best results. The collaborative absorbent effect of sodium carboxylate and carboxylic acid groups was superior to that of sodium carboxylate or carboxylic acid groups alone, and the composite with a ratio of about 2/3 for sodium carboxylate to carboxyl acid groups possessed the highest water absorbence. (C) 2001 Society of Chemical Industry.

引用

页码：1050 / 1053

页数：4

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