Chain Flexibility and Connectivity:The Uniqueness of Polymer Crystallization  

作　　者：Liang-Bin Li 

机构地区：[1]National Synchrotron Radiation Laboratory,CAS Key Laboratory of Soft Matter Chemistry,Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film,University of Science and Technology of China,Hefei,230026,China

出　　处：《Chinese Journal of Polymer Science》2023年第1期7-13,共7页高分子科学（英文版）

基　　金：the National Key R&D Program of China(2020YFA0405800);the National Natural Science Foundation of China(Nos.51890872 and 51633009);Anhui Provincial Key R&D Program(Nos.202004a05020075 and 202104a05020008).

摘　　要：Theory of polymer crystallization is listed as one of the top ten current challenges in polymer community.Clarifying the uniqueness of polymer crystallization should be the first step to search for the roadmap for targeting this challenge.Chain flexibility and connectivity are two peculiar characteristics of polymers,which differentiate their dynamics and structures from that of small molecules.The uniqueness of polymer crystallization must also stem from these two peculiar characteristics,which,however,has not been attracted significant attention.A local structure order may be essential in assisting the transformation of flexible chain to rigid segment with conformational ordering.The entanglement pressure and entanglement free energy may help to understand how entanglement affect nucleation in polymer network and why the interlamellar amorphous layer always accompany the formation of crystal layer.Some recommendations will be given for future study.

关 键 词：Polymer crystallization Chain flexibility Chain connectivity NUCLEATION 

分 类 号：O63[理学—高分子化学]