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Synthesis of block copolymers by combination of photoinduced and atom transfer radical polymerization routes
Date
2002-01-01
Author
Erel Göktepe, İrem
Cianga, Ioan
Serhatli, Ersin
Yağcı, Yusuf
Metadata
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This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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Block copolymers of methyl methacrylate (MMA) and styrene (St) were obtained by the combination of two different free radical polymerization processes, namely photoinduced and atom transfer radical polymerization (ATRP) methods. In the first step, hydroxy terminated polymers were prepared by photoinitiated polymerization of MMA in the presence of N,N'-dimethylethanolamine and benzophenone as the initiating system and subsequently converted to bromine ended poly(methyl methacrylate) by the esterification of the resulting polymer with 2-bromo-propionylbromide. The functionalized polymers thus prepared were used as initiators in ATRP of St, in bulk, in conjunction with CuBr/2,2'-bipyridine as catalyst. The GPC and H-1-NMR analysis, and the kinetic studies indicate a fully controlled/"living" radical polymerization which results in the formation of block copolymers with narrow polydispersities.
Subject Keywords
Block copolymer
,
Photoinduced radical polymerization
,
Atom transfer radical polymerization
URI
https://hdl.handle.net/11511/47737
Journal
European Polymer Journal
DOI
https://doi.org/10.1016/s0014-3057(02)00006-x
Collections
Department of Chemistry, Article