羧甲基纤维素/聚乙二醇/聚丙烯酸高吸水性树脂制备及其溶胀性研究  

Fabrication of Carboxymethyl Cellulose / Poly( Ethylene Glycol) /Poly( Acrylic Acid) Superabsorbent Composite and Study on Its Sw elling Properties

作　　者：张敏[1] 李碧婵[1] 陈良壁[1] 

机构地区：[1]福建省高校绿色化工技术重点实验室/武夷学院生态与资源工程学院,福建武夷山354300

出　　处：《九江学院学报（自然科学版）》2014年第4期23-25,28,共4页Journal of Jiujiang University：Natural Science Edition

基　　金：福建省自然科学基金项目(编号2012N0027);福建省教育厅JK类项目(编号JK2012055);南平市科技局项目[编号N2012Z06(6)];武夷学院基金项目(编号JB05194)成果之一

摘　　要：以羧甲基纤维素(CMC)为基底,通过自由基聚合制备羧甲基纤维素(CMC)/聚乙二醇(PEG)/聚丙烯酸(PAA)高吸水性树脂。研究该树脂对蒸馏水、雨水和Na Cl溶液的吸水性。实验结果表明:蒸馏水、雨水和0.2 mol/L Na Cl溶液中对应的溶胀比分别为680g/g、520g/g和130g/g。离子强度由0增加到0.2 mol/L,溶胀比由680g/g减小到130 g/g。随着p H值增大,溶胀比逐渐增大,在p H=8.4时发生突增,溶胀比达到最大值1057 g/g。Carboxymethyl cellulose/poly （ethylene glycol） /poly （acrylic acid） superabsorbent composite were synthesized by free radical polymerization. The water absorption for distilled water, rainwater and NaCl solution were investigated. The results showed that the swelling ratio for distilled water, rainwater and NaCl solution were 680,520 and 130 g/g, respectively. The swelling ratio decreased dramatically from 680 to 130 g/g as ionic strength increased from 0 to 0.2 mol/L. Moreover, with increasing of pH values, the swelling ratio increased gradudlly, and it showed a characteristic increase at pH = 8.4. The maximum swelling ratio was 1057 g/g.

关 键 词：羧甲基纤维素 高吸水性 聚乙二醇 聚丙烯酸 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]