环烯烃聚合物与环烯烃共聚物的流变性能研究  

Rheological Properties of Cyclic Olefin Polymers and Cyclic Olefin Copolymers

作　　者：王煜 尤伟 WANG Yu;YOU Wei(Beijing National Laboratory for Molecular Sciences(BNLMS),CAS Key Laboratory of Engineering Plastics,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院化学研究所,北京分子科学国家研究中心,中国科学院工程塑料重点实验室,北京100190 [2]中国科学院大学,北京100049

出　　处：《高分子通报》2025年第2期370-380,共11页Polymer Bulletin

基　　金：北京市自然科学基金面上项目(基金号2232074);国家自然科学基金面上项目(基金号22175188)资助.

摘　　要：环烯烃聚合物(COP)与环烯烃共聚物(COC)分别由降冰片烯衍生物通过烯烃开环易位聚合再氢化、降冰片烯衍生物与乙烯单体加成共聚反应两种方式制备而得。由于其优异的性能,COP和COC已经成为全球医疗包装和光学产品消费领域的重要材料。通过比较它们的流变特性对温度的依赖性,发现COP的熔体黏度高于COC。Arrhenius方程式的分析结果显示光学级COP样品F52R的流动活化能明显高于其他样品。利用温度-时间重叠原理建构各样品的主曲线,成功得到各自的缠结模量GNo,并结合热机械分析仪(TMA)结果进一步决定缠结分子量(Me)。COC的Me可达16~18 kDa,约为COP结果的3~4倍。该研究结果不仅为材料加工参数的选择提供了依据,也能加深读者对COP与COC本征特性差异的理解。Cycloolefin polymers(COPs)and cycloolefin copolymers(COCs)are synthesized from norbornene derivatives using two respective methods:ring-opening metathesis polymerization followed by hydrogenation,and addition copolymerization with ethylene monomers.Recognized for their excellent performance,COPs and COCs have become the important materials in the global medical packaging and optical product sectors in recent years.A comparison of the temperature dependence of rheological properties reveals that COPs exhibit a higher melt viscosity than COCs.The Arrhenius equation analysis indicates that the optical-grade COP sample F52R has a notably higher flow activation energy compared to other samples.By the time-temperature superposition principle,master curves for each sample were constructed,yielding the entanglement modulus(GNo).The entanglement molecular weight(Me)is further determined with the TMA results for each sample.It was found that COCs’Me can reach 16–18 kDa,which is approximately 3–4 times that of COPs’.These findings are expected to guide the selection of processing parameter in the COP and COC industries,and provide new insights in the intrinsic property differences between COPs and COCs.

关 键 词：环烯烃聚合物 环烯烃共聚物 流变性能 流动活化能 缠结分子量 

分 类 号：TQ3[化学工程]