Effect of poly(4-tert-butylstyrene)block length on the microphase structure of poly(ethylene oxide)-b-poly(4-vinylbenzyl chloride)-b-poly(4-tert-butylstyrene)triblock terpolymers  

作　　者：Kun An Jia Gao Yihang Chen Jingjing Nie Yongjin Li Junting Xu Binyang Du 

机构地区：[1]State Key Laboratory of Motor Vehicle Biofuel Technology,Department of Polymer Science&Engineering,Zhejiang University,Hangzhou 310027,China [2]College of Material,Chemistry and Chemical Engineering,Hangzhou Normal University,Hangzhou 310036,China [3]Department of Chemistry,Zhejiang University,Hangzhou 310027,China

出　　处：《Chinese Chemical Letters》2023年第6期551-555,共5页中国化学快报（英文版）

基　　金：the National Natural Science Foundation of China(Nos.21875214,21674097 and 21774111)for financial support。

摘　　要：A series of linear poly(ethylene oxide)-b-poly(4-vinylbenzyl chloride)-b-poly(4-tert-butylstyrene)(PEO_(113)-b-PVBC_(130)-b-Pt BS_(x)or E_(113)V_(130)T_(x))triblock terpolymers with various lengths x(=20,33,66,104,215)of Pt BS block were synthesized via a two-step reversible addition-fragmentation chain transfer(RAFT)polymerization.The E_(113)V_(130)T_(x)triblock terpolymers were non-crystalline because the PVBC and Pt BS blocks strongly hindered the crystallization of PEO block.The effects of Pt BS block length x on the phase structures of E_(113)V_(130)T_(x)triblock terpolymers were investigated by combined techniques of small-angle X-ray scattering(SAXS)and transmission electron microscopy(TEM).It was found that with increasing x from20 to 215,the phase structure of E_(113)V_(130)T_(x)triblock terpolymers became more ordered and changed from disordered structure,hexagonally-packed cylinder(HEX),hexagonally perforated layer(HPL),to lamellar(LAM)phase structures.Temperature-variable SAXS measurements showed that the HEX,HPL and LAM phase structures obtained for E_(113)V_(130)T_(66),E_(113)V_(130)T_(104)and E_(113)V_(130)T_(215)by thermal annealing,respectively,were thermodynamically stable in the temperature range of 30-170℃.

关 键 词：ABC triblock terpolymer Phase structure SAXS HPL Thermodynamically stable 

分 类 号：TQ317[化学工程—高聚物工业]