全离子型纳米复合水凝胶聚(2-丙烯酰胺-2-甲基丙磺酸-丙烯酸-N-(3-二甲氨基)丙基甲基丙烯酰胺)/Laponite的合成及性能研究Preparation and Properties of Ionic Nanocomposite Hydrogels Poly(2-acrylamido-2-methlypropane Sulfonic Acid-co-acrylic Acid-co-N[-3(dimethylamino)propyl] methacrylamide)/Laponite
徐世美;杜娟;王吉德;
摘要(Abstract):
本文以锂藻土(Laponite)为无机交联剂,2-丙烯酰胺-2-甲基丙磺酸(AMPS)、丙烯酸(AA)和N-(3-二甲氨基)丙基甲基丙烯酰胺(DMAPMA)为离子型单体,通过原位自由基聚合方法制备离子型聚(AMPS-co-AA-coDMAPMA)/Laponite纳米复合(NC)水凝胶.在证实纳米复合水凝胶组成和网络结构基础上,系统研究其机械性能及在不同p H缓冲液和盐溶液中的溶胀行为.由于Laponite的均匀分散使水凝胶具有良好的机械性能,其断裂拉伸强度达196 k Pa,断裂伸长率达3 805%,且该纳米复合水凝胶表现出一定的p H和盐敏感行为.
关键词(KeyWords): Laponite;纳米复合水凝胶;离子型单体;机械性能;环境响应性
基金项目(Foundation): NSFC-新疆联合基金本地优秀青年人才培养专项(U1403392);; 国家自然科学基金资助项目(21366031);; 新疆维吾尔自治区国际科技合作计划项目(20146008)
作者(Authors): 徐世美;杜娟;王吉德;
DOI: 10.13568/j.cnki.651094.2016.03.002
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