摘要
以玉米淀粉和氯乙酸为原料合成羧甲基淀粉,研究了物料配比、水、碱用量等因素对羧甲基淀粉取代度的影响,确立了合成的最佳条件:量比n(淀粉)n∶(氯乙酸)n∶(NaOH)n∶(水)=12∶5∶1∶6,碱化1h、35℃,羧甲基化4h、70℃.其印花性能与海藻酸钠相近.
Corn starch and chloroacetic acid were used as raw materials for the synthesis of car boxymeth- ylstarch. The factors affecting substitution degree of carboxymethylstarch were studied, such as raw material ratio, water amt, and base amt. The properties of the product in printing were similar to sodium alginate, The optimal synthetic conditions were confirmed as follows：starch：chloroacetic acid：base：water=1：2：5：16 （mol. ratio）, basification at 35℃C for 1 h and carboxymethylation at 70℃ for 4 h,
出处
《印染助剂》
CAS
2006年第2期25-27,共3页
Textile Auxiliaries
关键词
羧甲基化
取代度
印花性能
carboxumethylation
substitution degree
printing properties
