丙烯腈接枝交联淀粉的制备及其铬(Ⅵ)离子清除效果  

Preparation of a Polyacrylonitrile Grafted Cross-linked Starch Copolymer as an Adsorbent for the Removal of Cr (Ⅵ) Ion

作　　者：李嘉乐[1] 朱沛沛[1] 

机构地区：[1]陕西理工学院化学与环境科学学院,陕西汉中723001

出　　处：《西部皮革》2013年第18期40-43,共4页West Leather

基　　金：陕西理工学院大学生创新实验项目(UIRP1130)

摘　　要：以玉米淀粉为原料,环氧氯丙烷为交联剂,制备交联玉米淀粉。此后,再以FeSO4-H2O2为引发剂,丙烯腈作为接枝单体制备丙烯腈接枝交联淀粉,并研究其铬(Ⅵ)离子清除效果。结果表明,10 g交联玉米淀粉、丙烯腈用量10 mL、引发剂用量4 mL、接枝时间1.5 h、反应温度40℃,此条件下接枝效率可达83.72%,接枝率为116.39%,所得丙烯腈接枝交联淀粉对铬(Ⅵ)离子的清除率可达80%左右。The polyacrylonitrile grafted cross-linked starch copolymer was prepared by graft polymerization using corn cross-linked starch, which obtained by the reaction of epichlorohydrin and corn starch, as raw material, acrylonitrile as a monomer and FeSO4-H2O2 as an initiator. Its capacity for removing chromium （Ⅵ） ion was studied. The results showed that the graft efficiency was up to 83.72%, the graft rate was 116.39% when the graft polymerization was performed under the optimum condition that cross-linked corn starch dosage was 10 g, acrylonitrile was 10 mL, initiator was 4 mL, reaction time 1.5 h and temperature 40 ℃, and the chromium （Ⅵ） ion removing rate was about 80% from the as-prepared grafted copolymer.

关 键 词：交联淀粉 丙烯腈 接枝 清除 铬（Ⅵ）离子 

分 类 号：TS23[轻工技术与工程—粮食、油脂及植物蛋白工程] X388[轻工技术与工程—食品科学与工程]