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Chemozymatic synthesis and characterization of H-shaped triblock copolymer

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Abstract

The synthesis of well-defined H-shaped block copolymer based on the enzymatic ring-opening polymerization (eROP) and atom transfer radical polymerization (ATRP) is described. The dihydroxyl polycaprolactone (PCL) was synthesized by the eROP of ε-caprolactone (ε-CL) in the presence biocatalyst Novozyme 435 and initiator ethylene glycol. Subsequently, the resulting PCL was converted to tetrafunctional macroinitiator by the esterification with 2,2-dichloro acetyl chloride (DCAC). The H-shaped block copolymer was then synthesized by the ATRP of styrene. The polymers were characterized by NMR and GPC. Linear first-order kinetics, linearly increasing molecular weight with conversion, and low polydispersities observed from the ATRP of St showed that the polymerization was well controlled. (PSt)2-b-PCL-b-(PSt)2 block copolymers with varying molecular weight and controllable composition were obtained.

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Authors and Affiliations

  1. Alan G. MacDiarmid Institute, Jilin University, 130023, Changchun, P.R. China

    Bao Zhang, Yapeng Li, Yaxin Xu, Shuwei Wang & Jingyuan Wang

  2. Department of Bioengineering, College of Pharmacy, Jilin University, 130021, Changchun, P.R. China

    Lina Ma

Authors
  1. Bao Zhang
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  2. Yapeng Li
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  3. Yaxin Xu
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  4. Shuwei Wang
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  5. Lina Ma
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  6. Jingyuan Wang
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Correspondence to Yapeng Li.

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Zhang, B., Li, Y., Xu, Y. et al. Chemozymatic synthesis and characterization of H-shaped triblock copolymer . Polym. Bull. 60, 733–740 (2008). https://doi.org/10.1007/s00289-008-0906-x

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  • DOI: https://doi.org/10.1007/s00289-008-0906-x

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