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Title of Journal: Colloid Polym Sci

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Abbravation: Colloid and Polymer Science

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Springer-Verlag

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DOI

10.1002/chem.200390189

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1435-1536

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Photoliving radical polymerization of methyl meth

Authors: Eri Yoshida
Publish Date: 2009/04/08
Volume: 287, Issue: 7, Pages: 767-772
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Abstract

The novel photoliving radical polymerization of methyl methacrylate MMA was determined using 22’azobis4methoxy24dimethylvaleronitrile AMDV and 4methoxy2266tetramethylpiperidine1oxyl MTEMPO in the presence of bisalkylphenyliodonium hexafluorophosphate BAI The polymerization provided a comparatively narrow molecular weight distribution in the range of 14–17 The resulting PMMA contained no BAI fragments in its structure and had the 1cyano13dimethyl3methoxybutyl radical and MTEMPO at the 11 molar ratio The experimental molecular weight was in close agreement with the theoretical one when the initiator efficiency was taken into consideration The plots of lnMMA0/MMA vs time and the molecular weight of PMMA vs the conversion and vs the reciprocal of the initial concentration of AMDV showed linear correlations indicating that the polymerization proceeded in accordance with a living mechanism It was found that the polymerization had a photoswitching ability because the polymerization was interrupted by turning off the irradiation and then restarted by the irradiation again

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