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ÇAKMAKÇI, EMRAH

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2011 - 20122
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Author: KAYAMAN APOHAN, NİLHAN × Subject: PHOTOPOLYMERIZATION ×

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    Preparation and characterization of boron containing thiol-ene photocured hybrid coatings
    (ELSEVIER SCIENCE SA, 2012) ÇAKMAKÇI, EMRAH; Cakmakci, Emrah; Mulazim, Yusuf; Kahraman, Memet Vezir; Apohan, Nilhan Kayaman
    In this study, flame retardant, 4-vinylphenyl boronic acid containing coatings were prepared by thiol-ene polymerization. The photopolymerization kinetics of thiol-ene based formulations was investigated by real time infrared spectroscopy. The experiments showed that as the amount of boronic acid was increased, flame retardant properties of the coatings were also increased. Tensile test results showed that boronic acid groups strengthened the polymeric network. DSC results revealed that the addition of thiol causes Tg values of the coatings to decrease. On the other hand acid groups improved the hydrophilicity of the coatings. (C) 2012 Elsevier B.V. All rights reserved.
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    Flame retardant thiol-ene photocured coatings
    (ELSEVIER, 2011) ÇAKMAKÇI, EMRAH; Cakmakci, Emrah; Mulazim, Yusuf; Kahraman, Memet Vezir; Apohan, Nilhan Kayaman
    The low polymerization tendency of allyl compounds can be enhanced by thiol-ene polymerization systems. In this study. allyldiphenyl phosphine oxide (ADPPO) containing thiol-ene based photocured coatings were prepared with the aim to improve their final thermal and flame retardant properties. The photopolymerization kinetics of thiol-ene based formulations were investigated by real-time infrared spectroscopy. The incorporation of ADPPO into the polymer chains was confirmed by monitoring the conversion of acrylate double bonds and measuring the gel content of the crosslinked films. The experiments showed that as the amount of ADPPO was increased, thermal and flame retardant properties of the coatings were also increased. (C) 2010 Elsevier Ltd. All rights reserved.