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Chemoenzymatic synthesis of Y-shaped diblock copolymer

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Abstract

Y-shaped diblock copolymer polycaprolactone-block-(polystyrene)2 [PCL-b-(PSt)2] was synthesized successfully by the combination of enzymatic ring-opening polymerization (eROP) and atom transfer radical polymerization (ATRP). CH3O-terminated PCL was synthesized firstly by eROP of ε-caprolactone (ε-CL) in the presence of biocatalyst Novozyme 435 and initiator CH3OH, subsequently the resulting PCL was converted to macroinitiator by the esterification of it with 2,2-dichloro acetyl chloride (DCAC). PCL-b-(PSt)2 diblock copolymers were synthesized in an ATRP of the styrene with CuCl/2,2′-bipyridine as the catalyst system. The kinetic analysis of ATRP indicated a controlled/‘living’ radical polymerization. The structure and composition of obtained polymers were characterized with NMR, GPC and FTIR. The thermal behavior was characterized by differential scanning calorimetry (DSC).

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Acknowledgments

This work was supported by the Natural Science Foundation of China (No. 20574028) and Natural Science Foundation for Youth.

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Authors and Affiliations

  1. Alan G. MacDiarmid Institute, Jilin University, 130023, Changchun, People’s Republic of China

    Bao Zhang, Yapeng Li, Wei Wang, Shuwei Wang & Jingyuan Wang

  2. The First Hospital of JiLin University, 130021, Changchun, People’s Republic of China

    Liang Chen

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  1. Bao Zhang
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  2. Yapeng Li
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  3. Wei Wang
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  4. Liang Chen
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  5. Shuwei Wang
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  6. Jingyuan Wang
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Correspondence to Yapeng Li.

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Zhang, B., Li, Y., Wang, W. et al. Chemoenzymatic synthesis of Y-shaped diblock copolymer. Polym. Bull. 62, 643–655 (2009). https://doi.org/10.1007/s00289-009-0050-2

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  • DOI: https://doi.org/10.1007/s00289-009-0050-2

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