摘要
以壳聚糖-环氧丙基三甲基氯化铵（CTS-ETA）进行羧甲基化改性，制得两性壳聚糖；制备羧甲基化CTS-ETA的优化条件为：m（氯乙酸）：m（CTS—ETA）=1．5：1，碱化时间为1h，醚化时间为3h，醚化温度为60℃。将自制改性壳聚糖应用于成纸物理强度的增强，结果表明：两性壳聚糖可用作纸张的增强剂，加入少量（质量分数为0．2％-0．3％）就能对纸张的物理强度有很大的提高。
Amphoteric chitosan was prepared by carboxymethylating chitosan-epoxypropyltrimethylammonium chloride （CTS-ETA）. The optimized conditions for the carboxymethylation of CTS-ETA were as follows： the mass ratio of CTS-ETA to CICH2COOH was 1.5 ： 1; basification time was 60 min; etherification time was 3 h; reaction temperature was 60 ℃. The application results show that the amphoteric chitosan can be used as paper strengthening agent. They can improve the physical properties of handsheets remarkably at the mass fraction of 0. 2% -0.3%.
出处
《造纸化学品》
CAS
2007年第6期10-14,共5页
Paper Chemicals
关键词
羧甲基化
两性壳聚糖
纸张增强剂
carboxymethylation
amphoteric chitosan
paper strengthening agent
