Abstract
The UV-curable hyperbranched urethane acrylate oligomers modified with different fatty acids including undecylenic acid (UCA), myristic acid (MA), and oleic oil (OA) are successfully synthesized in this paper. The prepared oligomers are characterized using FTIR, 1HNMR, GPC, DSC, and TGA. The properties of the UV-curable films formed by these oligomers are also determined. The effects of the oligomer structures including double bond content, chain length of the modified fatty acids, and content of fatty acid and polyurethane acrylate segment, on the properties of the cured films, which are tack-free time, pencil hardness, impact resistance, adhesion, and boiling water resistance, are discussed in detail. It is observed that the curing film formed by HBPE2-60%UCA-20%PUA shows the best comprehensive performance among the films prepared in this study.
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Acknowledgements
This study was supported by the Natural Science Foundation of Jiangsu Province (BK20130602), Collaborative Innovation Center of Suzhou Nano Science and Technology, the Priority Academic Program Development of Jiangsu Higher Education Institutions, the Fundamental Research Funds for the Central Universities and Jiangsu Himonia Technology Co., LTD.
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Jiao, Z., Yang, Q., Wang, X. et al. UV-curable hyperbranched urethane acrylate oligomers modified with different fatty acids. Polym. Bull. 74, 5049–5063 (2017). https://doi.org/10.1007/s00289-017-2003-5
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DOI: https://doi.org/10.1007/s00289-017-2003-5