Synthesis of controlled thermoresponsive PET track-etched membranes by ATRP method

Authors

  • Kai Pan,

    1. College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
    2. State Key Laboratory of Polymer Materials Engineering (Sichuan University), Chengdu 610065, China
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  • Ruimin Ren,

    1. College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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  • Yi Dan,

    1. State Key Laboratory of Polymer Materials Engineering (Sichuan University), Chengdu 610065, China
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  • Bing Cao

    Corresponding author
    1. College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
    • College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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Abstract

Controlled thermoresponsive PET track-etched membranes were synthesized by grafting N-isopropylacrylamide (NIPAAm) onto the membrane surface via atom transfer radical polymerization (ATRP). The initial measurements were made to determine the anchoring of ATRP initiator on PET membrane surface. Thereafter, polymerization was carried out to control the mass of polymer by controlling reaction time grafted from the membrane surface and, ATR-FTIR, grafting degree measurements, water contact angle measurements, TGA, and SEM were used to characterize changes in the chemical functionality, surface and pore morphology of membranes as a result of modification. Water flux measurements were used to evaluate the thermoresponsive capacity of grafted membranes. The results show the grafted PET track-etched membranes exhibit rapid and reversible response of permeability to environmental temperature, and its permeability could be controlled by controlling polymerization time using ATRP method. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011.

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