低黏度阳离子淀粉的制备及其表面施胶性能研究  

Preparation of Low Viscosity Cationic Starch and Its Application in Surface Sizing

作　　者：李楠[1] 张光华[1] 刘国俊[1] 王义伟[1] 

机构地区：[1]陕西科技大学化学与化工学院,陕西西安710021

出　　处：《造纸化学品》2007年第6期19-22,共4页Paper Chemicals

摘　　要：以玉米原淀粉为原料,经盐酸适度酸解后,通过3-氯-2-羟丙基三甲基氯化铵醚化制备低黏度阳离子淀粉。研究了盐酸的用量、反应温度和反应时间对酸解淀粉黏度的影响,探讨了阳离子醚化剂的用量对阳离子淀粉黏度的影响。在水介质中,盐酸用量5%,反应温度35℃,反应时间3h,阳离子醚化剂用量2.5%,制备的低黏度阳离子淀粉即可达到表面施胶的要求。表面施胶实验结果表明,低黏度阳离子淀粉比氧化淀粉和阳离子淀粉具有更好的表面施胶性能。The low viscosity cationic starch for surface sizing was prepared by etherifying corn starch with 3-chloro- 2-hydroxypropyl-trimethylammonium chloride after the starch was appropriately hydrolyzed by hydrochloric acid. The influences of reaction conditions such as the hydrochloric acid dosage, temperature and reaction time on the viscosity of acid hydrolyzed starch were investigated. The effects of the cationic etherizing agent addition levels on the viscosity of cationic starch were also studied. The low viscosity cationic starch, which was prepared by acid- hydrolyzing the corn starch with 5% of hydrochloric acid at 35 ℃ for 3 h followed by etherifying the acid-hydrolyzed starch with 2.5% of the 3-chloro-2-hydroxypropyl-trimethylammonium chloride in aqueous media, can meet the requirement of surface sizing. The experiment results indicate that the low viscosity cationic starch shows a better performance in surface sizing than oxidized starch and industry cationic starch.

关 键 词：阳离子淀粉 低黏度 表面施胶 表面强度 

分 类 号：TS727[轻工技术与工程—制浆造纸工程]