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Issue 21, 2018
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Preparation of biorenewable poly(γ-butyrolactone)-b-poly(l-lactide) diblock copolyesters via one-pot sequential metal-free ring-opening polymerization

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Abstract

The preparation of block copolymers containing poly(γ-butyrolactone) blocks remains a synthetic challenge owing to the unfavorable thermodynamics towards the ring-opening polymerization (ROP) of non-strained five-membered rings that makes them prone to copolymerization with other cyclic lactones or lactides rather than the formation of homopolymers. By choosing a suitable organophosphazene superbase as a catalyst, we realized the successful one-pot preparation of poly(γ-butyrolactone)-b-poly(L-lactide) by sequential ROP of γBL and L-LA for the first time. The thermal stabilities, crystallization, and melting behaviors of the obtained diblock copolyesters were also investigated.

Graphical abstract: Preparation of biorenewable poly(γ-butyrolactone)-b-poly(l-lactide) diblock copolyesters via one-pot sequential metal-free ring-opening polymerization

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Article information


Submitted
09 Mar 2018
Accepted
23 Apr 2018
First published
24 Apr 2018

Polym. Chem., 2018,9, 2936-2941
Article type
Paper

Preparation of biorenewable poly(γ-butyrolactone)-b-poly(L-lactide) diblock copolyesters via one-pot sequential metal-free ring-opening polymerization

Y. Shen, J. Zhang, N. Zhao, F. Liu and Z. Li, Polym. Chem., 2018, 9, 2936
DOI: 10.1039/C8PY00389K

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