Superabsorbent nanocomposite (alginate-g-PAMPS/MMT): Synthesis, characterization and swelling behavior

被引：101

作者：

Yadav, Mithilesh ^{[1
]}

Rhee, Kyong Yop ^{[1
]}

机构：

[1] Kyung Hee Univ, Coll Engn, Dept Mech Engn, Ind Liaison Res Inst, Yongin 446701, South Korea

来源：

CARBOHYDRATE POLYMERS | 2012年 / 90卷 / 01期

基金：

新加坡国家研究基金会;

关键词：

Sodium alginate; 2-Acrylamido-2-methyl-1-propanesulfonic acid; Montmorillonite; Swelling ratio; N; '-methylenebisacrylamide; SODIUM ALGINATE; PERVAPORATION SEPARATION; THERMAL-STABILITY; GUAR GUM; BLEND MEMBRANES; ETHYL ACRYLATE; HYDROGELS; GEL; COMPOSITE; POLYMERS;

D O I：

10.1016/j.carbpol.2012.05.010

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A superabsorbent composite (alginate-g-PAMPS/MMT) was prepared by graft copolymerization from alginate, 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS) and Na+ montmorillonite (MMT) in an inert atmosphere. Effects of polymerization variables on water absorbency, including the content of Na+ montmorillonite, sodium alginate, N,N'-methylenebisacrylamide and AMPS, were studied. The introduced montmorillonite formed a loose and porous surface and improved the water absorbency of the alginate-g-PAMPS/MMT superabsorbent composite. Swelling behaviors of the superabsorbent composites in various cationic salt solutions (NaCl, CaCl2 and FeCl3) and anionic salt solutions (NaCl and Na2SO4) were also systematically investigated. The superabsorbent composite was further characterized using Fourier transform infrared spectroscopy (FTIR), rheology, thermogravimetric analysis (TGA), X-ray diffraction (XRD) and scanning electron microscopy (SEM) taking alginate-g-PAMPS as a reference. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：165 / 173

页数：9

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