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Synthesis of starlike PtBA-g-PEO amphiphilic graft copolymer via highly efficient Cu-catalyzed SET-NRC reaction at ambient temperature by Yaogong Li; Yaqin Zhang; Sujuan Zhai; Yan Deng; Huiming Xiong; Guolin Lu; Xiaoyu Huang is a Materials Science article available to read on EtoBox.

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## Abstract Two new amphiphilic star graft copolymers bearing hydrophobic poly(__tert__‐butyl acrylate) backbone and hydrophilic poly(ethylene oxide) (PEO) side chains with different molecular weights were synthesized by sequential reversible addition fragmentation chain transfer (RAFT) polymerization and single electron transfer‐nitroxide radical coupling (SET‐NRC) reaction under mild conditions. RAFT homopolymerization of __tert__‐butyl 2‐((2‐bromopropanoyloxy)methyl)acrylate was mediated by a four‐armed chain transfer agent in a controlled way to afford a well‐defined starlike backbone with a narrow molecular weight distribution (__M__~w~/__M__~n~ = 1.26). The target poly(__tert__‐butyl acrylate)‐__g__‐PEO (P__t__BA‐__g__‐PEO) star graft copolymers were synthesized by SET‐NRC reaction between Br‐containing P__t__BA‐based starlike backbone and PEO end functionalized with 2,2,6,6‐tetramethylpiperidine‐1‐oxyl (TEMPO) group using copper/__N__,__N__,__N__′,__N__′,__N__′′‐pentamethyldiethylenetriamine as catalytic system at ambient temperature via grafting‐onto strategy. The critical micelle concentration values of the obtained amphiphilic star graft copolymers in aqueous media and br

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Author

Yaogong Li; Yaqin Zhang; Sujuan Zhai; Yan Deng; Huiming Xiong; Guolin Lu; Xiaoyu Huang

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0887-624X)

Published

2010

Language

EN

Field

Materials Science (Physical Sciences)