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Synthesis of poly(ethylene adipate-co-l-lactic acid) copolymers via ring opening polymerization

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Abstract

Poly(ethylene adipate-co-l-lactic acid) (PLEA) copolymers were prepared via ring opening polymerization from l-lactide and hydroxyl terminated poly(ethylene adipate) prepolymer as starting materials. The composition and microstructure of the PLEA copolymers were characterized by nuclear magnetic resonance (1H NMR) spectra. Results confirmed the incorporation of lactic acid segments into the chain of PLEA copolymers as well as the existence of ester exchange reaction. The thermal behaviors and thermal stability of the resultant PLEA copolymers were evaluated by differential scanning calorimeter (DSC) and thermogravimetric analysis (TGA), respectively; and the crystal structure was confirmed by using wide-angle X-ray diffraction (WAXD). Results showed that those properties of the PLEA copolymers showed high dependence on the composition of the copolymers.

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Acknowledgments

This works was financially supported by the Key Projects in the National Science & Technology Pillar Programs (Contract No. 2007BAE28B06), and Zhejiang Provincial Major Science & Technology Special Projects (Contract No. 2008C11092-2).

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Authors and Affiliations

  1. Ningbo City Key Laboratory of Polymer Materials, Ningbo Institute of Material Technology and Engineering Chinese Academy of Sciences, Ningbo, 315201, Zhejiang, People’s Republic of China

    Ji Liu, Peng Chen, Jun Li, Sheng-H Jiang, Zhi-Q Jiang & Qun Gu

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  1. Ji Liu
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  2. Peng Chen
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  3. Jun Li
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  5. Zhi-Q Jiang
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Correspondence to Qun Gu.

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Liu, J., Chen, P., Li, J. et al. Synthesis of poly(ethylene adipate-co-l-lactic acid) copolymers via ring opening polymerization. Polym. Bull. 66, 187–197 (2011). https://doi.org/10.1007/s00289-010-0268-z

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  • DOI: https://doi.org/10.1007/s00289-010-0268-z

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