丙烯酸/淀粉/SPS互穿网络高吸水树脂的合成研究  

Study on synthesis of acrylic acid/starch/SPS superabsorbents with interpenetrating network structure

作　　者：江照洋[1] 蔡会武[1] 王瑾璐[1] 

机构地区：[1]西安科技大学化学与化工学院,西安710054

出　　处：《化工新型材料》2009年第9期79-82,共4页New Chemical Materials

基　　金：陕西省教育厅专项基金(07KJ310)资助

摘　　要：采用浓硫酸磺化法制备了聚乙烯醇硫酸钠(SPS),以丙烯酸、淀粉和SPS为原料采用水溶液聚合法合成了淀粉接枝丙烯酸-聚乙烯醇硫酸钠互穿网络高吸水性树脂(SA-IP-SPS)。红外光谱、扫描电镜分析结果表明了产品互穿网络结构的形成。合成反应的最佳条件为:w(淀粉)=6.7%;反应温度:70℃;中和度(DN):90%;w(交联剂)=0.067%;w(引发剂)=0.27%;w(SPS)=8%。在优化的聚合条件下,产品的吸蒸馏水倍率和吸盐水倍率分别可达到962g/g和112g/g。Sodium PVA sulfate（SPS） was prepared through the sulfonation of the hydroxyl groups of PVA using oil of vitriol as sulfonating agent. Acrylic acid, starch and SPS were used as raw materials of solution polymerization to synthesize starch-g-acrylic acid superabsorbents interpenetrated with sodium PVA sulfate（SA-IP-SPS）. Characterization results with IR and SEM proved the formation of inter-penetrating network structure in the product. The optimal polymerization conditions were.- w（starch） = 6. 7% reaction temperature： 70℃; degree of neutralization（DN）： 90% ; w（crosslinker） = 0. 067 %; w（initiator） = 0. 27%; w（SPS） = 8 %. Under the optimal conditions, the highest water absorbency and saline ab- sorbency of the product were about 962g/g and 112g/g respectively.

关 键 词：高吸水树脂 互穿网络 磺化 

分 类 号：TQ324.8[化学工程—合成树脂塑料工业]