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Preparation of hyperbranched polyester polyol-based urethane acrylates and applications on UV-curable wood coatings |
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| Authors: | Sümeyye ?abani Ay?en H. ?nen Atilla Güng?r |
| Affiliation: | 1. Institute of Science and Technology, Department of Polymer Science and Technology, Istanbul Technical University, Maslak, 34469, Istanbul, Turkey 2. Faculty of Science and Letters, Chemistry Department, Istanbul Technical University, Maslak, 34469, Istanbul, Turkey 3. Faculty of Art & Science, Department of Chemistry, Marmara University, G?ztepe, Kadikoy, 34722, Istanbul, Turkey |
| Abstract: | In the present study, hyperbranched urethane acrylates (UA/HB-PEs) were synthesized by modifying the hydroxyl groups of hyperbranched polyester polyols (HB-PEs). The structure of oligomers were characterized by FTIR and 1H NMR spectroscopic techniques. Formulations containing UA/HB-PEs, reactive diluents, and photoinitiator were applied onto wood substrates and successfully polymerized under UV-irradiation. The coating performances and thermal properties of UV-cured films were evaluated. The studies on film characteristics reveal that the incorporation of UA/HB-PE afforded coatings with good adhesion and high gloss properties. It is observed that UV-cured coatings originated from [2,2-bis(4-??-hydroxyethoxy) phenyl propane] (HB-HEPA)- and [2,2-bis(4-??-hydroxyethoxy) phenyl 6F propane] (HB-HEPFA)-based oligomers possessed better surface and mechanical properties. |
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