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Synthesis and characterization of block comb-like copolymers P(A-MPEO)-block-PSt

Authors

  • Yu-Gang Li,

    1. Department of Polymer Science and Engineering University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
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  • Peng-Jie Shi,

    1. Department of Polymer Science and Engineering University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
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  • Yunshen Zhou,

    1. Centre for Physical Science University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
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  • Cai-Yuan Pan

    Corresponding author
    1. Department of Polymer Science and Engineering University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
    • Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
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Abstract

Amphiphilic block comb-shaped copolymers, poly[poly(ethylene oxide) methyl ether acrylate]-block-polystyrene [P(A-MPEO)-block-PSt] with PSt as a handle, were successfully synthesized via a macromonomer technique. The reaction of MPEO with acryloyl chloride yielded a macromonomer, A-MPEO. The macroinitiator PSt capped with the dithiobenzoate group (PSt-SC(S)Ph) was prepared by reversible addition–fragmentation transfer (RAFT) polymerization of styrene in the presence of benzyl dithiobenzoate, and used as macroinitiator in the controlled radical block copolymerization of A-MPEO at room temperature under 60Co irradiation. After the unreacted macromonomer A-MPEO had been removed by washing with hot saturated saline water, block comb-shaped copolymers were obtained. Their structure was characterized by 1H NMR spectroscopy and gel permeation chromatography. The phase transition and self-assembling behaviour were investigated by atomic force microscope and differential scanning calorimetry. Copyright © 2004 Society of Chemical Industry

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