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投稿时间：2016-04-20
投稿时间：2016-04-20
中文摘要: 以PEG-400为相转移催化剂，采用溶媒法制备羧甲基菊粉（CMI），通过单因素和正交试验考察了催化剂用量、NaOH 用量及添加方式、碱化时间、氯乙酸用量、醚化时间对取代度的影响规律。结果表明，优化工艺条件为： 1 %菊粉质量的PEG-400、n（NaOH）颐 n（菊粉）:n（氯乙酸=2.5 : 1 : 1.2（两步加碱法）、碱化时间0.7 h、醚化时间 4 h。此条件下制得取代度达到1.214 5的羧甲基菊粉。
中文关键词: 羧甲基菊粉（CMI） PEG-400 取代度 优化条件
Abstract:With ethanol as the reactive media，the phase transfer catalytical method of PEG-400 was used to prepare carboxymethyl inulin（CMI）.The synthesis technology of CMI was optimized with single factor and orthogonal experiments.Effects of the amount of catalyst，the dosage and feeding ways of NaOH，alkalization time，the amount of chloroacetic acid and etherification time were investigated.The substitution degree of CMI was affected by the operating conditions.The best CMI with a substitution degree of 1.214 5 was produced and the optimized conditions were as follows：PEG-400 accounted for the proportion of inulin quality 1 %,n（NaOH）:n（inulin）:（chloroacetic acid)=2.5:1 :1.2（feeding NaOH by two steps），alkalization time 0.7 h，etherification time 4 h.
文章编号：201702018 中图分类号： 文献标志码：A
基金项目:国家科技支撑计划（2013BAE11B03）
| Author Name | Affiliation |
| LU Guo-tai，MA Yu-jie，JIANG Di，YANG Gang，XING Wei-hong | State Key Laboratory of Materials-Oriented Chemical Engineering,Nanjing Tech University,Nanjing 210009,Jiangsu,China |
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