前端聚合制备丙烯酸接枝羧甲基纤维素超高吸水水凝胶  

Preparation of Acrylic Acid-graft-carboxymethyl Cellulose Superabsorbent Hydrogels by Frontal Polymerization

作　　者：黄宏平[1] 李胜方[1] 冯力[1] 刘曼[1] 汪小芳[1] 徐蕊[1] 

机构地区：[1]湖北理工学院化学与材料工程学院,湖北黄石435003

出　　处：《湖北理工学院学报》2013年第2期37-41,共5页Journal of Hubei Polytechnic University

基　　金：湖北省教育厅重点项目(项目编号:D20123001);黄石市科技计划项目(项目编号:2010A1019-4);湖北理工学院大学生科技创新项目(项目编号:11cx07)

摘　　要：以羧甲基纤维素(CMC)和丙烯酸(AA)等为原料,以蒸馏水为溶剂,采用前端聚合技术制备了丙烯酸接枝羧甲基纤维素超高吸水水凝胶。通过红外和扫描电镜对其进行表征,研究了引发剂、交联剂及CMC与AA的比率对前端聚合速率和水凝胶溶胀率的影响。研究结果表明,反应条件对前端移动速率及水凝胶的溶胀率有重要影响,由前端聚合制备的丙烯酸接枝羧甲基纤维素的水凝胶具有超高吸水性能。Acrylic acid -graft -carboxymethyl cellulose superabsorbent hydrogels were prepared by frontal polymerization using carboxymethyl cellulose and acrylic acid as raw materials and water as solvents. The as-synthesized hydrogels were characterized by IR and scanning electron microscopy. The effects of initiator, cross-linking agents and the ratio of ChIC and AA on frontal polymerization and swelling ratio were studied in this paper. It was found that the reaction condition had important effects on the frontal velocity and swell-ing properties of hydrogels. The acrylic acid-graft-carboxymethyl cellulose hydrogels prepared by frontal polymerization have superabsorbent properties.

关 键 词：前端聚合 羧甲基纤维素 丙烯酸 超高吸水水凝胶 

分 类 号：O632.6[理学—高分子化学]