Polystyrene-block-poly(methyl methacrylate): initiation issues with block copolymer formation using ARGET ATRP
Date
2012
Authors
Aitchison, T.J.
Ginic Markovic, M.
Clarke, S.
Valiyaveettil, S.
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Journal article
Citation
Macromolecular Chemistry and Physics, 2012; 213(1):79-86
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Abstract
The synthesis, kinetics, and characterization of polystyrene and poly(methyl methacrylate) block copolymers produced by ARGET ATRP are discussed. Halogen exchange is used and the polymerization appears to be living in the generation of the second block. On further investigation, the GPC traces exhibit a shoulder, which suggests poor initiation of the macroinitiator. Previous reports suggest that to increase the initiation effi ciency of the second block, 10% styrene monomer should be added to the mixture. Upon adding the 10% styrene for the second block ARGET ATRP polymerization, the appearance of a well-initiated polymer is observed. However, at greater conversions the results clearly demonstrate the production of a homopolymer/block copolymer mixture.
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Data source: Supporting Information, https://doi.org/10.1002/macp.201100478
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Copyright 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim