膨胀蛭石/聚(丙烯酸钾-丙烯酰胺)高吸水性复合材料的制备、性能及表征  

Preparation,properties and characterization of expanded vermiculite/poly(potassium acrylate-acrylamide) superabsorbent composite

作　　者：唐群委[1] 林建明[1] 吴季怀[1] 张传娟[1] 

机构地区：[1]华侨大学材料物理化学研究所,福建泉州362011

出　　处：《功能材料》2006年第9期1510-1513,共4页Journal of Functional Materials

基　　金：福建省新材料与器件重大专题资助项目(2004HZ01-3);福建省重大科研资助项目(2002H002)

摘　　要：以N,N’-亚甲基双丙烯酰胺为交联剂,过硫酸钾为引发剂,丙烯酸和丙烯酰胺为单体,采用新型水溶液聚合法合成了膨胀蛭石/聚(丙烯酸钾-丙烯酰胺)高吸水性复合材料。考察了交联剂用量、引发剂用量、单体浓度、中和度、反应温度、单体质量比及膨胀蛭石含量对吸水倍率的影响,试验结果表明,当蛭石含量为30%(相对单体质量,下同)时,交联剂用量为0.04%,引发剂为1.1%,中和度为75%(相对丙烯酸物质的量),单体浓度为50%,反应温度为75℃,吸水倍率最高可达1048g/g。最后,采用SEMI、R对其结构及组成进行了表征。Expanded vermiculite/poly （potassium acrylate-acrylamide） were synthesized by a novel aqueous solution polymerization with N, N＇-methylene bisacrylamide as crosslinker K2S2O8 as initiator, acrylic acid and acrylamide as monomers. The effects of amounts of cross-linker, initiator, neutralization degree, reaction temperature, mass ratio of acrylic acid to acrylamide and expanded vermiculite on water absorbency were researched. The results showed that crosslinker of 0.04wt%, initiator of 1.1wt%, neutralization degree of 75%, monomer concentration of 50wt% and temperature of 75℃ were the best conditions when the amount of expanded vermiculite is 30wt%, the water absorbency is up to 1048g/g. Finally, SEM and IR were used to characterize the structure and constitutes of superabsorbent composite.

关 键 词：高吸水 复合材料 溶液聚合 膨胀蛭石 共聚 

分 类 号：TB34[一般工业技术—材料科学与工程] TQ316.33[化学工程—高聚物工业]