Polyethylene‐block‐poly(ε‐caprolactone) diblock copolymers: synthesis and compatibility |
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| Authors: | Jing‐shan Mu Fei Yang Zhong‐su Liu Yue‐sheng Li |
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| Affiliation: | 1. Department of Polymer Science and Engineering, Faculty of Materials Science and Chemical Engineering, Ningbo University, , Ningbo, 315211 PR China;2. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, , Changchun, 130022 PR China |
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| Abstract: | A strategy is introduced for the synthesis of polyethylene‐block‐poly(ε‐caprolactone) block copolymers by a combination of coordination polymerization and ring‐opening polymerization. First, end‐hydroxylated polyethylene (PE‐OH) was prepared with a one‐step process through ethylene/3‐buten‐1‐ol copolymerization catalyzed by a vanadium(III) complex bearing a bidentate N,O] ligand (PhN?C(CH3)CHC(Ph)O]VCl2(THF)2). The PE‐OH was then used as macroinitiator for ring‐opening polymerization of ε‐caprolactone, leading to the desired nonpolar/polar diblock copolymers. The block structure was confirmed by spectral analysis using 1H NMR, gel permeation chromatography and differential scanning calorimetry. The unusual topologies of the model copolymers will establish a fundamental understanding for structure–property correlations, e.g. compatibilization, of polymer blends and surface and interface modification of other polymers. © 2014 Society of Chemical Industry |
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| Keywords: | block copolymer coordination polymerization ring‐opening polymerization compatibilization phase morphology |
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