低取代度阳离子淀粉的制备及在造纸上的应用  

Preparation of cationic starch of low substitution and application in paper making

作　　者：王香爱[1] 张洪利[1] 

机构地区：[1]渭南师范学院,陕西渭南714000

出　　处：《化工科技》2007年第2期20-23,共4页Science & Technology in Chemical Industry

基　　金：渭南师范学院2006年自然科学基金资助项目(06YKSO29)

摘　　要：介绍了以玉米淀粉和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、n(NaOH)∶n(CTA)、反应温度、反应时间对取代度的影响,最佳实验条件为:淀粉50 g,醚化剂用量0.0 160 mol,n(NaOH)∶n(CTA)=1.2∶1,反应温度40℃,反应时间2 h,制备的阳离子淀粉取代度可达0.0791%,糊液粘度为1.07,同时对阳离子淀粉在造纸工业上的应用做了简述。The cationic starch of low substitution was prepared by watering process with cornstarch and 3-chloro-2-hydroxypropyl-trimethyl-ammonium chloride（CTA）. The effects of the amount of catalyst,n（NaOH）/n（CTA）,the reaction temperature and the time of the reaction on the substitution,were discussed. The optimal experimental conditions are as follows： starch 50 g, catalyst 0.016 0 mol,n（NaOH）/n（CTA） = 1.2 ： 1 ,the reaction temperature is 40 degrees,the reaction time is 2 h. The low substitution of cationic starch prepared could reach 0.079% ,the viscosity of 0.5% pasty fluid was 1.07. And some applications in paper making were summarized.

关 键 词：3-氯-2-羟丙基三甲基氯化铵 合成 低取代度 阳离子淀粉 应用 

分 类 号：TS235[轻工技术与工程—粮食、油脂及植物蛋白工程]