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PMMA-block-polyisobutylene-block-PMMA prepared with α,ω-dilithiated polyisobutylene and its characterization

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Summary

A triblock copolymer of PMMA and polyisobutylene(PIB), PMMA-block-PIB-block-PMMA, was prepared by anionic polymerization of methyl methacrylate initiated with α, ω-dilithiated poly(isobutylene) diisobutylate in tetrahydrofuran at -60°C. The molecular weight distribution of the block copolymer was close to that of the starting PIB. The stereoregularity of PMMA block was predominantly syndiotactic. Proton spin-lattice relaxation time and solution viscosity of the block copolymer in acetone, which is non-solvent for PIB, indicate that the block copolymer forms rigid spherical particles. Stereocomplex formation with isotactic PMMA was also studied.

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Authors and Affiliations

  1. Department of Chemistry, Faculty of Engineering Science, Osaka University, 560, Toyonaka, Osaka, Japan

    Tatsuki Kitayama, Takafumi Nishiura & Koichi Hatada

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  1. Tatsuki Kitayama
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  2. Takafumi Nishiura
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  3. Koichi Hatada
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Kitayama, T., Nishiura, T. & Hatada, K. PMMA-block-polyisobutylene-block-PMMA prepared with α,ω-dilithiated polyisobutylene and its characterization. Polymer Bulletin 26, 513–520 (1991). https://doi.org/10.1007/BF01032676

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  • DOI: https://doi.org/10.1007/BF01032676

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