化工进展 ›› 2015, Vol. 34 ›› Issue (08): 3049-3053.DOI: 10.16085/j.issn.1000-6613.2015.08.023

• 工业催化 • 上一篇    下一篇

差示扫描量热法对乙交酯开环聚合催化剂的性能评价

高建1, 崔爱军2, 陈圣春2, 何明阳2, 尹芳华2, 陈群1,2   

  1. 1 南京理工大学化工学院, 江苏 南京 210094;
    2 常州大学江苏省绿色催化材料与技术重点实验室, 江苏 常州 213164
  • 收稿日期:2014-11-13 修回日期:2014-12-23 出版日期:2015-08-05 发布日期:2015-08-05
  • 通讯作者: 陈群,研究员,博士生导师,研究方向为医用高分子材料。E-mail 13906123032@126.com。
  • 作者简介:高建(1986—),男,博士研究生。E-mail cczugj@yeah.net。
  • 基金资助:
    江苏省高校自然科学研究重大项目(11KJA430007)。

Kinetic study on the ring-opening polymerization of glycolide by differential scanning calorimetry

GAO Jian1, CUI Aijun2, CHEN Shengchun2, HE Mingyang2, YIN Fanghua2, CHEN Qun1,2   

  1. 1 College of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China;
    2 Jiangsu Key Lab of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou 213164, Jiangsu, China
  • Received:2014-11-13 Revised:2014-12-23 Online:2015-08-05 Published:2015-08-05

摘要: 采用差示扫描量热法研究了3类催化剂[Bi(OAc)3、SnCl2·2H2O和乙酰丙酮类金属配合物]催化乙交酯(GA)开环聚合的反应动力学。Bi(OAc)3和SnCl2·2H2O在催化GA开环聚合的过程中表现出了较高的活性;Ph3P的加入使得催化体系的活化能减少25%以上,相关反应速率至少增长30%;向催化剂中加入引发剂甲醇(MeOH)可以使反应的活化能降低30%以上,反应速率增加50%以上。复合催化剂相对于单一催化剂具有更好的催化性能。结果表明,差示扫描量热法是一种高效的筛选聚合用催化剂的方法。

关键词: 差示扫描量热法, 乙交酯, 动力学, 开环聚合

Abstract: The kinetics of glycolide (GA) ring opening polymerization catalyzed by three kinds of catalysts, i.e. Bi(OAc)3, SnCl2·2H2O and acetyl acetone complexes, were studied by DSC method. Bi(OAc)3 and SnCl2·2H2O showed higher activity in GA ring opening polymerization. The addition of Ph3P could make catalytic system activation reduced by more than 25%, and it made related reaction rate increased by at least 30%. The composite catalyst had better catalytic performance compared with single catalyst. The results show that DSC method is an efficient approach to choose good catalysts for polymerization.

Key words: differential scanning calorimeter(DSC), glycolide, kinetics, ring opening polymerization

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