Synthesis of bis[(4-hydroxyethoxy)phenyl]sulfone containing urethane acrylates and their applications |
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Authors: | Betül Türel Erbay I Ersin Serhatl? |
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Affiliation: | 1. Department of Polymer Science and Technology, Institute of Science and Technology, Istanbul Technical University, Maslak 34469, Istanbul, Turkey;2. Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, Maslak 34469, Istanbul, Turkey |
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Abstract: | UV-curing processes are used in industrial applications because of their advantages such as high speed applications and solvent-free formulations at ambient temperature. UV-curable sulfone containing polyurethane acrylates were synthesized from bis(4-hydroxyethoxy)phenyl]sulfone (BHEPS), polyols, isophorone diisocyanate (IPDI) and 2-hydroxyethyl methacrylate (HEMA). The polyurethane acrylates characterized with 1H NMR and FT-IR spectroscopies. The UV-cured coatings and films were formulated with polyurethane acrylates, reactive diluents such as dipropyleneglycol diacrylate (DPGDA), 1,6-hexanediol diacrylate (HDDA) and photoinitiator. The water wettability of the UV-cured films was investigated by measuring contact angle. Sulfone containing polyurethane acrylates increase mechanical properties such as pendulum hardness, pencil hardness, tensile strength, and e-modulus values. These mechanical properties and chemical-solvent resistance may have been strongly dependant on the sulfone content and crosslinking density. |
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Keywords: | Coatings UV-curing Photopolymerization Sulfone Urethane acrylate Polyurethanes |
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