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Graft copolymerization of PU membranes with acrylic acid and crotonic acid using benzoyl peroxide initiator

Authors

  • Mehlika Pulat,

    Corresponding author
    1. Gazi University, Fen Edebiyat Fakültesi Kimya Bölümü, Teknikokullar, 06500, Ankara, Turkiye
    • Gazi University, Fen Edebiyat Fakültesi Kimya Bölümü, Teknikokullar, 06500, Ankara, Turkiye
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  • Doğan Babayiğit

    1. Gazi University, Fen Edebiyat Fakültesi Kimya Bölümü, Teknikokullar, 06500, Ankara, Turkiye
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Abstract

To improve water wettability of polyurethane (PU), graft copolymerization with acrylic acid (AA) and crotonic acid (CA) was performed using a benzoyl peroxide (BO) initiator. The grafting reaction was carried out by placing the membranes in aqueous solutions of AA and CA at constant temperatures. Variations of graft yield with time, temperature, initiator, and monomer concentrations were investigated. The optimum temperature, polymerization time, monomer, and initiator concentrations for AA were found to be 70°C; 3 h; 1.5 M; 5.0 × 10−2M, and for CA 70°C; 1 h; 1.5 M; 4.0 × 10−2M, respectively. The grafting membranes were characterized by FTIR spectroscopy and scanning electron microscopy (SEM) analysis, and the effect of grafting on equilibrium water content (EWC) of PU membranes was obtained by swelling measurements. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 80: 2690–2695, 2001

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