红外光谱法研究聚合物中的Diels-Alder反应动力学  

Kinetic study of Diels-Alder reaction in polymer by infrared spectroscopy

作　　者：王彤彤 熊瑜[2] 牛慧 WANG Tongtong;XIONG Yu;NIU Hui(School of Chemical Engineering,Dalian University of Technology,Dalian 116024,China;Patent Examination Cooperation(Beijing)Center of the Patent Office,CNIPA,Beijing 100160,China)

机构地区：[1]大连理工大学化工学院,辽宁大连116024 [2]国家知识产权局专利局专利审查协作北京中心,北京100160

出　　处：《石油化工》2023年第8期1080-1085,共6页Petrochemical Technology

摘　　要：呋喃与马来酰亚胺之间的Diels-Alder(D-A)反应是一类重要的热可逆反应,目前已成为聚合物结构和功能设计的重要化学手段,研究聚合物中的D-A反应动力学行为对于材料性能设计十分关键。利用FTIR定量测定了聚合物中的D-A反应产物在不同温度下的红外特征吸收峰强度随时间的变化,通过反应动力学方程计算出D-A反应的表观动力学常数和活化能,并将计算结果与1H NMR测试的结果进行比较,验证了利用FTIR定量计算聚合物中D-A反应动力学的可行性。Diels-Alder(D-A)reaction between furan and maleimide is an important thermal reversible reaction,which has become an important chemical method for the design of polymer structure and function.Therefore,the D-A reaction kinetics behavior in polymers is very important for the design of material properties.FTIR was used to quantitatively measure the change of infrared characteristic absorption peak intensity of D-A adduction in polymer at different temperatures with time.The apparent kinetic constant and activation energy of D-A reaction were calculated by reaction kinetics equation,and the calculated results were compared with those measured by 1H NMR.The feasibility of using FTIR to calculate D-A reaction kinetics of polymer was verified.

关 键 词：DIELS-ALDER反应 动力学 红外光谱学 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]