From CO2-Based Multifunctional Polycarbonates With a Controlled Number of Functional Groups to Graft Polymers
From CO2-Based Multifunctional Polycarbonates With a Controlled Number of Functional Groups to Graft Polymers
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DOI：
10.1002/macp.201200608
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发表时间：
2013-04-25
影响因子：
2.5
通讯作者：
Frey, Holger
中科院分区：
文献类型：
--
作者：
Geschwind, Jeannette;Wurm, Frederik;Frey, Holger
二氧化碳和环氧化物的共聚被用来合成功能性聚碳酸酯。在聚碳酸亚丙酯(PPC)主链上引入反应性双键是通过脂肪族烯烃环氧化物与环氧丙烷(PO)和二氧化碳(CO2)的共聚实现的。合成了一系列无规结构、共聚单体含量(322%)不同的共聚物，其相对分子质量为22 00034 000gmol1，并对其微观结构和热性能进行了表征。通过硫醇-烯反应证实了双键的容易转化，导致了双键的定量转化。制备了具有多种官能团的聚碳酸酯衍生物，为进一步接枝提供了合适的基团。
Copolymerization of CO2 and epoxides is employed to generate functional polycarbonates. The introduction of reactive double bonds at a poly(propylene carbonate) (PPC) backbone is realized by the copolymerization of aliphatic alkene epoxides with propylene oxide (PO) and carbon dioxide (CO2). A series of copolymers with random structure and varying comonomer content (322%) with molecular weights in the range of 22 00034 000 g mol1 is synthesized and characterized with respect to their microstructure and thermal properties. The facile transformation of the double bonds is verified by a thiol-ene reaction, resulting in quantitative conversion of the double bonds. Polycarbonate derivatives with multiple functionalities are prepared, providing suitable moieties for further grafting.