doi:10.1007/s10118-021-2559-2

Citation: Wei-Min Ren and Hong-Juan Gao and Tian-Jun Yue. Flexible Gradient poly(ether-ester) from the Copolymerization of Epoxides and ε-Caprolactone Mediated by a Hetero-bimetallic Complex[J]. Chinese J. Polym. Sci. doi: 10.1007/s10118-021-2559-2 shu

Flexible Gradient poly(ether-ester) from the Copolymerization of Epoxides and ε-Caprolactone Mediated by a Hetero-bimetallic Complex

Received Date: 2021-01-05

Copolymerization is a commonly employed method to optimize 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 ε-caprolactone (CL). Monitoring the copolymerization process reveals that the catalyst 1 exhibited good performance for the copolymerization of epoxides and CL, affording the 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.
- Lactone,
- Epoxide,
- Copolymerization,
- Poly(ether-ester) copolymer,
- Dynamic mechanical analysis
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