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A well-defined biodegradable 1,2,3-triazolium-functionalized PEG-b-PCL block copolymer: facile synthesis and its compatibilization for PLA/PCL blends

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Abstract

A novel biodegradable 1,2,3-triazolium-functionalized PEG-b-PCL copolymer (TAPEC) was synthesized by the “click” coupling of methoxypolyethylene glycol azide and α-propargyl-ω-hydroxyl-poly(ε-caprolactone), followed by the quaternization of the 1,2,3-triazole moiety with iodomethane. All the intermediates and TAPEC were characterized by 1H NMR, FT-IR, and gel permeation chromatography (GPC). Taking advantage of the characteristics of ionic liquid and block copolymer, this ion-containing diblock copolymer is expected to be used as a novel compatibilizer in mixed biopolyester for regulating the interface and crystallization behaviors. Hence, the TAPEC was evaluated as a compatibilizer and an interface emulsifier in the blends of polylactic acid (PLA) and poly(ε-caprolactone) (PCL). Non-isothermal crystallization experimental results showed that the TAPEC with the higher amount of ε-caprolactone units induces a plasticization and nucleate effect that increased the crystallization ability of the PLA phase; meanwhile, in the PCL phase, the agminated ionic cluster acting as a nucleating agent significantly increased the crystalline of PCL.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (Nos. 51373045, 21404030, 51673056) and the Fundamental Research Funds for the Central Universities (JZ2016YYPY0062).

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Authors and Affiliations

  1. School of Chemistry and Chemical Engineering, Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei University of Technology, Hefei, 230009, China

    Ping Wang, Di Zhang, Yiyang Zhou, Yu Li, Huagao Fang, Haibing Wei & Yunsheng Ding

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  1. Ping Wang
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  2. Di Zhang
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  3. Yiyang Zhou
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  4. Yu Li
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Correspondence to Haibing Wei or Yunsheng Ding.

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Wang, P., Zhang, D., Zhou, Y. et al. A well-defined biodegradable 1,2,3-triazolium-functionalized PEG-b-PCL block copolymer: facile synthesis and its compatibilization for PLA/PCL blends. Ionics 24, 787–795 (2018). https://doi.org/10.1007/s11581-017-2234-3

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  • DOI: https://doi.org/10.1007/s11581-017-2234-3

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