用羧甲基化法改善沙蒿胶水溶性的研究  

Improving Water Solubility of Artemisia Glue by Carboxymethylization

作　　者：侯晓晖[1] 王煦[1] 张军 

机构地区：[1]西南石油学院化学化工学院,成都610500 [2]上海长建实业有限公司,上海200433

出　　处：《精细石油化工进展》2004年第9期30-32,共3页Advances in Fine Petrochemicals

摘　　要：为提高沙蒿胶的水溶性而使其应用得以拓宽,采用向其大分子链引入羧甲基基团,制备羧甲基沙蒿胶的方法.考察了影响降低沙蒿胶水不溶物含量的因素,实验结果表明,氢氧化钠用量为0.8%～1.6%、水乙醇体积比(1.5～2.5):20、氯乙酸用量0.6%～0.8%、反应温度50～65℃及反应时间为3～4 h时,可使改性羧甲基沙蒿胶的水不溶物含量由55%降至4%,并使其表观粘度显著提高.In order to improve the water solubility of artemisia glue and widen the application field, carboxylmethyl group was introduced into its molecular chain. The experimental result showed that the content of water - insoluble components in artemisia glue decreased to 4% and its apparent viscosity increased obviously when the dosage of sodium hydroxide and chloroacetic acid was 0.8% - 1.6% and 0.6% - 0.8 % respectively, the volume ratio of water to ethanol was 1.5 - 2.5:20, reaction temperature was in the range of 50 - 65 ℃ , and reaction time was 3 -4 hours.

关 键 词：羧甲基化法 水溶性 水不溶物 大分子 氯乙酸 反应温度 反应时间 胶水 用量 基团 

分 类 号：TS202.3[轻工技术与工程—食品科学]