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On-line GPC/NMR analyses of block and random copolymers of methyl and butyl methacrylates prepared with t-C4H9MgBr

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Summary

The isotactic block and random copolymers of methyl methacrylate and butyl methacrylate prepared with t-C4H9MgBr in toluene, were analyzed by using a 500 MHz 1H NMR spectrometer as a detector of gel permeation chromatography. The molecular weight dependence of the chemical compositions of these copolymers could be directly determined with this method by monitoring signal intensities of OCH3 and OCH2 due to methyl methacrylate and butyl methacrylate units, respectively. From the results mechanism of the copolymerizations was discussed in some detail.

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Authors and Affiliations

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

    Koichi Hatada, Koichi Ute, Tatsuki Kitayama, Masanori Yamamoto, Tohru Nishimura & Masaharu Kashiyama

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  1. Koichi Hatada
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  2. Koichi Ute
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  3. Tatsuki Kitayama
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  4. Masanori Yamamoto
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  5. Tohru Nishimura
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  6. Masaharu Kashiyama
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Hatada, K., Ute, K., Kitayama, T. et al. On-line GPC/NMR analyses of block and random copolymers of methyl and butyl methacrylates prepared with t-C4H9MgBr. Polymer Bulletin 21, 489–495 (1989). https://doi.org/10.1007/BF00271972

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  • DOI: https://doi.org/10.1007/BF00271972

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