Synthesis of Self-assembled Star/Linear Block Copolymer Blends via Aqueous RAFT Dispersion Polymerization  

作　　者：Ruiming Wang Wenyu Zhu Li Zhang Xinxin Sheng Jianbo Tan 

机构地区：[1]Department of Polymeric Materials and Engineering,School of Materials and Energy,Guangdong University of Technology,Guangzhou,Guangdong,510006 China [2]Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter,Guangzhou,Guangdong,510006 China

出　　处：《Chinese Journal of Chemistry》2024年第14期1606-1614,共9页中国化学（英文版）

基　　金：the National Natural Science Foundation of China(Grant 22171055,52222301,and 21971047);the Guangdong Natural Science Foundation for Distinguished Young Scholar(Grant 2022B1515020078);the Science and Technology Program of Guangzhou(Grant SL2023A04J00142).

摘　　要：Reversible addition-fragmentation chain transfer(RAFT)-mediated polymerization-induced self-assembly(PISA)of star block copolymer and linear block copolymer using a binary mixture of a star-like macro-RAFT agent and a linear macro-RAFT agent is reported.With this formulation,star block copolymer and diblock copolymer were formed simultaneously to generate colloidally stable star/linear block copolymer assemblies.Size exclusion chromatography(SEC)analysis confirmed the presence of two types of polymers in the final samples.The molar ratio of the star-like macro-RAFT agent and the linear macro-RAFT agent has a significant impact on the morphology of polymer assemblies.It was found that increasing the amount of star-like macro-RAFT agent facilitated the formation of higher-order morphologies.Additionally,effects of other reaction parameters including the length/number of the arm of the star-like macro-RAFT agent,degree of polymer(DP),monomer concentration on the morphology of star/linear block copolymer assemblies were also investigated.We expect that this work will offer new possibilities for the scalable preparation of polymer assemblies with unique structures and functions.

关 键 词：Star block copolymer Reversible addition-fragmentation chain transfer Polymerization-induced self-assembly Livingpolymerization COPOLYMERS 

分 类 号：O63[理学—高分子化学]