微波作用下丙烯酸聚乙二醇-400单酯大单体的制备与表征.pdfVIP

学兔兔 全国中文核心期刊 新鲤建巍粉 中国科技核心期-T1 微波作用下丙烯酸聚乙二醇一400单醅 大单体的索Ij备与表征 王勤为，子L红星，李彦青，郝光明，李利军 (1．广西科技大学 生物与化学工程学院，广西 柳州 545006 2．广西糖资源绿色加工重点实验室，广西柳州 545006) 摘要：利用微波作用，以聚乙二醇一400(PEG一400)和丙烯酸(AA)为单体，在催化剂对甲苯磺酸和阻聚剂对苯二酚作用下，制备 丙烯酸聚乙二醇一400单酯大单体。结果表明，微波作用制备丙烯酸聚乙二醇一400单酯大单体较传统水浴或油浴有较大优势，且在 酸醇摩尔比为2：1，催化剂对甲苯磺酸用量2．5％，阻聚剂对苯二酚用量2．0％，反应温度95℃，反应时间30min和微波功率450W 条件下，酯化率达96-3％。该工艺与传统工艺相比具有酯化率高、反应周期短等优点，具有良好的应用前景。 关键词：微波作用；丙烯酸聚乙二醇一400单酯；酯化率 中图分类号：TU528．042．2 文献标识码：A 文章编号：1001—702X(2015)12—0074—03 Synthesis and characterization of acrylate polyglycol(400)monoester under microwave irradiation WANG Qinwei，KONG Hongxing，LI Yanqing，HA0 Guangming，L1 un (1．College of Biological and Chemical Engineering，Guangxi University of Science and Technology，Liuzhou 545006，Guangxi，China； 2．Guangxi Key Laboratory of Green Processing of Sugar Resources，Liuzhou 545006，Guangxi，China) Abstract：Acrylic polyglyeol(400)monoester was synthesized by adding polyethylene glycol 400(PEG-400)，acrylic acid (AA)，hydroquinone(as an inhibitor)and amount of para-toluenesulfonic acid(as a catalyst)under microwave reactor．The result indicated that the monoester synthesized in microwave reactor had much advantage when compared with traditional aqueous bath and oil bath，and the optimal conditions were as follows：n(AA)：n(PEG)=1：2，amount of hydroquinone(as an inhibitor)2％，amount of para-toluenesulfonic acid(as a catalyst)2．5％，reaction temperature is 95 oc，reaction time 30 min and microwave power 450 W， moreover，the esterification ratio could reach 96_3％．The process h