State Key Laboratory of Coking Coal Resources Development and Comprehensive Utilization, Pingdingshan 467002, China.
School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China.
Molecules. 2023 Jul 5;28(13):5235. doi: 10.3390/molecules28135235.
Fixing carbon dioxide as a polymer material is an effective and environmentally beneficial approach for reducing the harm of CO greenhouse gas. In this paper, carbon dioxide and cyclohexene oxide were used as co-monomers, and a chiral binuclear cobalt complex with a biphenyl linker was employed as the catalyst to successfully prepare a poly(cyclohexenylene carbonate) with high stereoregularity. The influence of catalyst structure, CO pressure, and operating temperature on the copolymerization rate and polymer structure were systematically investigated. Optimal catalyst structure and operating conditions were determined, resulting in an excellent poly(cyclohexenylene carbonate) with a stereoregularity as high as 93.5%. Performance testing revealed that the polyester had a molecular weight of approximately 20 kg/mol, a glass transition temperature of 129.7 °C, an onset decomposition temperature of 290 °C, and a tensile strength of 42.8 MPa. These results demonstrate high thermal stability and mechanical strength, indicating the potential for expanding the applications of aliphatic polycarbonate materials.
将二氧化碳固定为聚合物材料是一种有效且环保的方法，可以减少 CO2 温室气体的危害。在本文中，我们使用二氧化碳和环氧环己烷作为共聚单体，采用具有联苯连接基的手性双核钴配合物作为催化剂，成功地制备了具有高立构规整性的聚（环亚己基碳酸酯）。系统研究了催化剂结构、CO2 压力和操作温度对共聚反应速率和聚合物结构的影响。确定了最佳的催化剂结构和操作条件，得到了立构规整度高达 93.5%的优异的聚（环亚己基碳酸酯）。性能测试表明，该聚酯的分子量约为 20kg/mol，玻璃化转变温度为 129.7°C，起始分解温度为 290°C，拉伸强度为 42.8MPa。这些结果表明其具有较高的热稳定性和机械强度，表明有望扩展脂肪族聚碳酸酯材料的应用。
