Synthesis of PS-g-POSS hybrid graft copolymer by click coupling via ”graft onto” strategy

Authors

  • Maoshan Niu,

    1. State Key Laboratory of Chemical Resource Engineering, Key Laboratory of Carbon Fiber and Functional polymers (Ministry of Education), Beijing University of Chemical Technology, Beijing 100029, China
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  • Tao Li,

    1. State Key Laboratory of Chemical Resource Engineering, Key Laboratory of Carbon Fiber and Functional polymers (Ministry of Education), Beijing University of Chemical Technology, Beijing 100029, China
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  • Riwei Xu,

    Corresponding author
    1. State Key Laboratory of Chemical Resource Engineering, Key Laboratory of Carbon Fiber and Functional polymers (Ministry of Education), Beijing University of Chemical Technology, Beijing 100029, China
    • State Key Laboratory of Chemical Resource Engineering, Key Laboratory of Carbon Fiber and Functional polymers (Ministry of Education), Beijing University of Chemical Technology, Beijing 100029, China
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  • Xiaoyu Gu,

    1. State Key Laboratory of Chemical Resource Engineering, Key Laboratory of Carbon Fiber and Functional polymers (Ministry of Education), Beijing University of Chemical Technology, Beijing 100029, China
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  • Dingsheng Yu,

    1. State Key Laboratory of Chemical Resource Engineering, Key Laboratory of Carbon Fiber and Functional polymers (Ministry of Education), Beijing University of Chemical Technology, Beijing 100029, China
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  • Yixian Wu

    1. State Key Laboratory of Chemical Resource Engineering, Key Laboratory of Carbon Fiber and Functional polymers (Ministry of Education), Beijing University of Chemical Technology, Beijing 100029, China
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Abstract

Polystyrene (PS)-incorporated polyhedral oligomeric silsesquioxanes (POSS) organic–inorganic hybrid graft copolymer could be achieved by click coupling reaction between alkyne groups in POSS and azido groups in PS via “graft onto” strategy. Alkyne-functionalized POSS was synthesized via thiol-ene facile click reaction and subsequent amidation reaction with very high yield. Azido-multifunctionalized PS could be synthesized by chloromethylation and subsequent azido reaction. The chemical structures of PS-(CH2Cl)m, PS-(CH2N3)m, and PS-g-POSS were determined by Fourier transform infrared and 1H NMR characterization. PS-g-POSS presented a better hydrophobic property with contact angle of 113° than that of PS (85°). And PS-g-POSS with ≤5% of grafting degree had lower glass transition temperature (Tg) than that of PS and then it increased up to 112°C with grafting degree. An obvious aggregation of POSS phase with 10–80 nm in size was formed in PS-g-POSS matrix. In addition, 5 wt % of PS-g-POSS was added to general purpose polystyrene (GPPS) to remarkably improve its tensile strength from 45 to 57 MPa. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

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