期刊
CHINESE JOURNAL OF POLYMER SCIENCE
卷 39, 期 8, 页码 1013-1019出版社
SPRINGER
DOI: 10.1007/s10118-021-2559-2
关键词
Lactone; Epoxide; Copolymerization; Poly(ether-ester) copolymer; Dynamic mechanical analysis
资金
- National Natural Science Foundation of China [21722402, 21674015]
The synthesis of poly(ether-ester)s through copolymerization of epoxides and epsilon-caprolactone using a specific complex has been demonstrated, resulting in materials with enhanced flexibility and performance. This study lays the theoretical foundation for the preparation of high-performance polymer materials.
Copolymerization is a commonly employed method for optimizing the properties of polymer materials. Incorporating ether segments into polyesters main chain to obtain polyether-polyester copolymers is an effective strategy to realize the integration of multiple properties of polyester and polyether, and to develop more high-performance, multi-purpose polymer materials. Herein, the synthesis of poly(ether-ester)s is accessible by employing the biphenyl-linked heterodinuclear salen Cr-Al complex in the presence of PPNCl for the copolymerization of epoxides and epsilon-caprolactone (CL). Monitoring the copolymerization process reveals that catalyst 1 exhibited good performance for the copolymerization of epoxides and CL, affording copolymers with a gradient sequence structure. The dynamic thermomechanical analysis (DMA) study indicates the obtained poly(ether-ester)s possess enhanced flexibility compared with the block copolymers or blend of PPO and PCL homopolymers with the same ratio. This study provides a theoretical basis for the preparation of high-performance polymer materials.
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