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. 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.

中文翻译：

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通过环氧化物/二氧化碳共聚和开环复分解聚合制备聚碳酸酯-嵌段-聚环烯烃

在烯丙醇作为链转移剂的存在下，通过钴催化的环氧化物/二氧化碳共聚，成功合成了具有烯丙基端基的脂肪族聚碳酸酯 (APC) 大分子链转移剂 (macro-CTA)。使用获得的APC 大分子-CTA 对环烯烃单体进行开环复分解聚合，产生相应的APC-嵌段-聚环烯烃共聚物。发现 APC 嵌段的热降解温度略高于我们之前报道的含有 APC 和乙烯基聚合物嵌段的嵌段共聚物 (≈20 ºC)。在烯丙醇作为链转移剂的存在下，通过钴催化的环氧化物/二氧化碳共聚，成功合成了具有烯丙基端基的脂肪族聚碳酸酯 (APC) 大分子链转移剂 (macro-CTA)。使用获得的APC 大分子-CTA 对环烯烃单体进行开环复分解聚合，产生相应的APC-嵌段-聚环烯烃共聚物。