季铵型低取代度阳离子淀粉的合成  

Synthesis of quaternary ammonium type low substituting degrees of cationic starch

作　　者：王香爱[1] 

机构地区：[1]渭南师范学院化学化工系,陕西渭南714000

出　　处：《应用化工》2007年第4期337-339,共3页Applied Chemical Industry

基　　金：陕西省教育厅专项科研资助项目(05JK190)

摘　　要：以玉米淀粉及3-氯-2-羟丙基三甲基氯化铵(CTA)为原料,采用水法制备低取代度季铵型阳离子淀粉,讨论了醚化剂用量、NaOH用量、反应温度、反应时间等对取代度的影响。结果表明,最佳合成条件为:淀粉50 g,醚化剂用量3 g,NaOH用量为0.77 g,反应温度40℃,反应时间2 h,制备的阳离子淀粉取代度可达0.079。The cationic starch of low substitution was prepared by watering process with corn starch 3-chloro-2-hydroxypropyl-trimethyl-ammonium chloride（CTA）. The effects of the amount of catalyst NaOH, reaction temperature and reaction time on substitution were discussed. The results showed that best conditions are：starch is 50 g, catalyst is 3 g, NaOH is 0.77 g, the reaction temperature is 40 ℃ reaction time is 2 h ,the substitution of cationic starch prepared can achieve 0.079.

关 键 词：季铵型 阳离子淀粉 低取代度 合成 

分 类 号：TS236.9[轻工技术与工程—粮食、油脂及植物蛋白工程]