肿胀 的
丙烯酸
蒸馏水
自愈水凝胶
复合数
共聚物
材料科学
傅里叶变换红外光谱
膨胀能力
化学工程
高分子化学
扫描电子显微镜
聚合
高吸水性高分子
自由基聚合
复合材料
化学
聚合物
色谱法
工程类
作者
Ali Pourjavadi,Bahareh Farhadpour,Farzad Seidi
出处
期刊:Starch-starke
[Wiley]
日期:2008-09-01
卷期号:60 (9): 457-466
被引量:26
标识
DOI:10.1002/star.200800208
摘要
Abstract In this study a novel alginate‐ g ‐poly(acrylic acid)/alumina composite was synthesized and characterized. Preparation of the composite hydrogels involved free radical polymerization of a combination of alginate, acrylic acid (AA) and distilled water, in appropriate amounts and N , N ‐methylene bisacrylamide (MBA) as crosslinking agent. The composite formation was confirmed by Fourier transform infrared spectroscopic (FT‐IR). The surface morphologies of the synthesized hydrogels were assessed by scanning electron microscopy. Systematically, the different variables of the graft copolymerization were optimized to achieve maximum swelling capacity. The swelling of superabsorbent hydrogels was measured in various solutions with pH values ranging from 0 to 14. In addition, the pH reversibility, on–off switching behavior, swelling kinetics in distilled water and the absorbency under load (AUL) were investigated.
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