In this investigation, a metal‐free process was developed that enables the synthesis of poly(propylene carbonate) (PPC) diols/polyols by copolymerization of CO₂ with propylene epoxide (PO) under environmentally friendly and cost‐effective conditions. This process implies the recycling of triethylborane and of ammonium salts that both enter in the composition of the initiators used to copolymerize CO₂ and PO. In complement to the above approach, a polymeric support, poly(diallyl dimethylammonium chloride), was synthesized and modified to carry ammonium carboxylate salts along its chain. The prepared polymeric initiator was utilized to copolymerize CO₂ with PO under heterogeneous conditions. Not only were the polymerization results similar to the samples obtained under homogeneous conditions, but the polymer substrate could easily be recovered by simple filtration. The integrity of the polycarbonate diols/polyols and the recycling process were followed by ¹H and ¹¹B NMR spectroscopy, gel permeation chromatography, and matrix assisted laser desorption ionization time of flight (MALDI‐TOF) MS.

中文翻译：

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回收硼酸盐复合物以合成聚碳酸酯多元醇：迈向环保且具有成本效益的过程。

在这项研究中，开发了一种无金属工艺，该工艺能够在环境友好且具有成本效益的条件下通过将CO ₂与环氧丙烷（PO）共聚来合成聚碳酸亚丙酯（PPC）二醇/多元醇。该方法意味着三乙基硼烷和铵盐的再循环，它们都进入用于共聚CO ₂和PO的引发剂的组成中。作为上述方法的补充，合成并改性了聚合物载体聚二烯丙基二甲基氯化铵，使其沿其链携带羧酸铵盐。所制备的聚合物引发剂用于使CO ₂共聚。在异质条件下使用PO 聚合结果不仅类似于在均相条件下获得的样品，而且可以通过简单过滤轻松回收聚合物底物。用¹ H和¹¹ B NMR光谱，凝胶渗透色谱法和基质辅助激光解吸电离飞行时间（MALDI-TOF）MS跟踪聚碳酸酯二醇/多元醇的完整性和回收过程。