不同种类氧化-还原引发体系对淀粉与丙烯酸接枝产物吸水性能的影响  

Effects of different kinds of redox initiators on superabsorbent prepared by graft copolymerization of acrylic acid onto starch

作　　者：王存国[1] 孙琳[1] 林琳[1] 董晓臣[1] 袁涛[1] 肖红杰[1] 赵树高[1] 

机构地区：[1]青岛科技大学高分子科学与工程学院,橡塑材料与工程教育部重点实验室,山东青岛266042

出　　处：《功能材料》2008年第2期290-292,296,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(50673047);山东省优秀中青年科学家科研奖励基金资助项目(2005BS09002)

摘　　要：以玉米淀粉和丙烯酸为主要原料,采用溶液聚合的方法,详细研究了H2O2、K2S2O8-Na2S2O3、Mn3+及Ce4+等不同种类氧化-还原引发体系对淀粉与丙烯酸接枝共聚物吸水性能的影响,用FTIR、XRD、DSC等方法对共聚产物结构进行了表征。通过对不同氧化-还原引发体系的引发机理分析和吸水性能测试结果比较,研究表明采用K2S2O8-Na2S2O3做引发体系时,接枝产物的吸水倍率最高,吸去离子水近1000g/g。Superabsorbent was prepared by graft co-polymerization using acrylic acid onto corn starch.The molecular structure was characterized by means of FTIR,XRD,TGA methods.The effects of different kinds of oxidation reduction initiators such as H2O2,K2S2O8-Na2S2O3,Mn^3＋ and Ce^4＋ on absorbencies of de-ionized water and running water for copolymer were studied in details.The copolymer prepared by corn starch and acrylic acid,using K2S2O8-Na2S2O3 as initiator,can absorb de-ionized water nearly to 1000g/g.In addition,using Ce^4＋ as initiator,the copolymer can absorb de-ionized water about 600g/g.

关 键 词：吸水树脂 淀粉 丙烯酸 氧化-还原引发剂 接枝共聚 

分 类 号：O636[理学—高分子化学]