The Effect of Polymer-Substrate Interaction on the Nucleation Property:Comparing Study of Graphene and Hexagonal Boron Nitride Nanosheets  

作　　者：Yi-ren Tang Ting Li Hai-mu Ye 徐军 郭宝华 

机构地区：[1]Advanced Materials Laboratory of Ministry of Education,Department of Chemical Engineering,Tsinghua University,Beijing 100084,China [2]Department of Materials Science and Engineering,China University of Petroleum,Beijing 102249,China

出　　处：《Chinese Journal of Polymer Science》2016年第8期1021-1031,共11页高分子科学（英文版）

基　　金：financially supported by the National Basic Research Program of China(No.2014CB932202);the National Natural Science Foundation of China(Nos.51473085 and 21374054);the Sino-German Center for Research Promotion

摘　　要：Hexagonal boron nitride nanosheets （BNNSs） can work as a more efficient nucleating agent for two polyesters compared to graphene. Studies on the crystallization and dewetting processes of two polyesters, poly（butylene succinate） and poly（butylene adipate）, on the two substrate surfaces prove that the interaction between BNNSs and the polyesters is stronger than that between graphene and the polyesters. This strong interaction induces the pre-ordered conformation of molten PBA which has been identified by the in situ FTIR spectra. Thus BNNSs possess higher nucleation property than graphene. Finally, a new polymer-substrate interaction induced nucleation mechanism was proposed to explain the nucleation efficiency difference between graphene and BNNSs.Hexagonal boron nitride nanosheets （BNNSs） can work as a more efficient nucleating agent for two polyesters compared to graphene. Studies on the crystallization and dewetting processes of two polyesters, poly（butylene succinate） and poly（butylene adipate）, on the two substrate surfaces prove that the interaction between BNNSs and the polyesters is stronger than that between graphene and the polyesters. This strong interaction induces the pre-ordered conformation of molten PBA which has been identified by the in situ FTIR spectra. Thus BNNSs possess higher nucleation property than graphene. Finally, a new polymer-substrate interaction induced nucleation mechanism was proposed to explain the nucleation efficiency difference between graphene and BNNSs.

关 键 词：Hexagonal boron nitride nanosheets GRAPHENE CRYSTALLIZATION DEWETTING Interaction. 

分 类 号：TQ314.24[化学工程—高聚物工业]