摘要
实验室及工业生产上用水媒法制备羧甲基纤维素的最佳工艺条件为：原料配比（质量比）为棉花∶氯乙酸∶３０％ ＮａＯＨ＝ ５∶６∶２６，常温常压，反应约２ ｈ。生产的羧甲基纤维素产品取代度高达０．８～２．２，粘度可达１ Ｐａ·ｓ～３ Ｐａ·ｓ，且水溶性好而迅速。
The optimum conditions for preparation of carboxymethyl cellulose with water medium method in laboratory and industry are: matter ratio of raw materials cotton fiber∶ ClCH 2COOH∶30%NaOH=5∶6∶26, reaction about 2 h at normal temperature and atmospheric pressure. The substitution rate of the carboxymethyl cellulose is as high as 0.8～2.2, its viscosity is as high as 1 Pa·s～3 Pa·s and it dissolves quickly and well.
出处
《陕西化工》
CAS
CSCD
1999年第4期39-40,共2页
Applied Chemical Industry
关键词
羧甲基纤维素
取代度
醚化
工艺
水媒法
carboxymethyl cellulose
substitution rate
etherification
