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Polycarbonate-block-polycycloalkenes via epoxide/carbon dioxide copolymerization and ring-opening metathesis polymerization


Aliphatic polycarbonate (APC) macromolecular chain-transfer agents (macro-CTAs) with an allyl end group were successfully synthesized by cobalt-catalyzed epoxide/carbon dioxide copolymerization in the presence of allyl alcohol as a chain-transfer agent. The ring-opening metathesis polymerization of cycloalkene monomers using the obtained APC macro-CTAs yielded the corresponding APC-block-polycycloalkene copolymers. Thermal degradation temperatures of the APC blocks were found to be slightly higher (≈20 ºC) than those of the block copolymers containing APC and vinyl-polymer blocks we have previously reported.

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This research paper is dedicated to Prof. Shohei Inoue, a great Japanese polymer chemist who pioneered epoxide/CO2 copolymerization and passed away on March 19, 2020. This work was supported by MEXT KAKENHI Grant Number 20K05599.

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Correspondence to Koji Nakano.

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Nakabayashi, Y., Nakano, K. Polycarbonate-block-polycycloalkenes via epoxide/carbon dioxide copolymerization and ring-opening metathesis polymerization. Polym J 53, 203–208 (2021).

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