聚丙烯酸钠高吸水性树脂的插层改性与吸水性能  

Study on Modification and Properties of Sodium Polyacrlate Super Absorbent Polymer

作　　者：张维刚[1] 崔英德[2] 方岩雄[3] 张小红[3] 

机构地区：[1]西北工业大学材料科学与工程系,陕西西安710072 [2]广东省仲恺农业技术学院,广东广州510225 [3]广东工业大学轻工化工学院,广东广州510090

出　　处：《广东工业大学学报》2007年第2期1-4,共4页Journal of Guangdong University of Technology

基　　金：国家自然科学基金资助项目(20176007;20376087);广东省自然科学基金资助项目(033307)

摘　　要：对钠基蒙脱土进行有机化改性处理,并把改性后的蒙脱土分散于丙烯酸钠水相中,用反相悬浮聚合法合成出蒙脱土插层聚丙烯酸钠高吸水性树脂.用IR、XRD等进行结构分析、表征,结果表明:合成树脂的网络内含有蒙脱土,且充分撑开,纳米量级均匀分散在聚合物基体中;加入10%改性蒙脱土,能显著提高树脂的凝胶强度、保水能力和吸水速度等性能.Using montmorillonite modified organically as host and acrylic acid as guest, the super absorbent polymers of PAA / MMT are prepared by inverse suspension polymerization and compared with pure PAA samples. XRD and IR studies show that the interlayer distance of the MMT fully dispersed in polymer is over 4.66 nm and the PAA / MMT SAP are nanocomposites. For PAA / MMT SAP with 10% clay, the gel strength is 3.6 times as high as that of the pure PAA samples. The important properties of the absorption speed and the retention capacity are also largely improved.

关 键 词：蒙脱土 聚丙烯酸钠 高吸水性树脂 插层改性 吸水性能 

分 类 号：TQ317[化学工程—高聚物工业]