湿法制备柠檬酸淀粉酯的工艺条件研究  

Studied on preparation conditions of citrate starch by wet method

作　　者：韩翊天 吴红梅[1] 徐靖雯 孙泽轩 秦琦 马爽 HAN Yi-tian;WU Hong-mei;XU Jing-wen;SUN Ze-xuan;QIN Qi;MA Shuang(School of Chemical and Environmental Engineering,Liaoning University of Technology,Jinzhou Liaoning 121001)

机构地区：[1]辽宁工业大学化学与环境工程学院,辽宁锦州121001

出　　处：《天津化工》2023年第3期31-34,共4页Tianjin Chemical Industry

基　　金：辽宁工业大学大学生创新创业资助项目(X2021048)。

摘　　要：本文研究了湿法制备柠檬酸淀粉酯的工艺条件,详细考察了催化剂用量、反应时间、反应温度、pH值、柠檬酸质量分数等因素对柠檬酸淀粉酯取代度的影响。利用正交实验,确定了合成柠檬酸淀粉酯的最佳工艺条件:催化剂用量(催化剂占溶液的体积分数)为1.5%,反应时间为6 h,反应温度为145℃,p H值为2.5,柠檬酸质量分数为40%,淀粉与柠檬酸质量比为2.0∶1。在此工艺条件下,柠檬酸淀粉酯的取代度最高,可达0.159。In this paper,the preparation conditions of citrate starch by wet method were studied.The effects of catalyst dosage,reaction time,reaction temperature,pH value and citric acid concentration on the substitution degree of citrate starch was investigated.The optimum technological conditions for synthesis of citrate starch were determined by orthogonal test.The results showed that the highest substitution degree(0.159)of citrate starch was obtained under the preparation conditions as follows:catalyst dosage is 1.5%,reaction time is 6 hours,reaction temperature is 145℃,pH=2.5,citric acid concentration is 40%,mass ratio of starch to citric acid is 2.0∶1.

关 键 词：柠檬酸淀粉酯 取代度 湿法 

分 类 号：TQ426.6[化学工程]