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Preparation and properties of waterborne polyurethane/self-cross-linkable fluorinated acrylic copolymer hybrid emulsions using a solvent/emulsifier-free method

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Abstract

A series of waterborne polyurethane (WBPU)/fluorinated self-cross-linkable acrylic copolymer hybrids (WBPU/FPA) emulsions were successfully prepared by solvent/emulsifier-free prepolymer mixing process. This study focused on the effect of vinyl triethoxysilane (VTES, 0–15 wt%)/butyl acrylate (BA, 15–0 wt%) weight ratio on the properties of WBPU/self-cross-linked fluorinated acrylic copolymer hybrids for high-performance water-repellent coating materials. As the VTES content increased, the particle size of hybrid emulsion decreased; however, the viscosity of the emulsion increased. The glass transition temperature Tgα, tensile modulus, storage modulus, and hardness increased with increasing VTES content. The surface tension of film sample decreased with increasing VTES content up to about 9 wt% and then levelled off. The tensile strength and water/methylene iodide contact angles of film sample increased with increasing VTES content up to about 9 wt% and then almost levelled off. The optimum VTES/BA weight ratio was found to be about 9:6 wt% to obtain high-performance water-repellent coating materials.

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Acknowledgments

This research was supported by the Basic Science Research Program through the NRF funded by the Ministry of Science, ICP & Future Planning (NRF-2012R1A1A2003643).

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Authors and Affiliations

  1. Department of Organic Material Science and Engineering, College of Engineering, Pusan National University, 2, Busandaehak-ro 63, Geumjeong-Gu, Busan, 609-735, South Korea

    Young Gwang Park, Young Hee Lee & Han Do Kim

  2. King Fahd University of Petroleum and Minerals (KFUPM), Dhahran, 31261, Saudi Arabia

    Mohammad Mizanur Rahman

  3. Division of Energy & Bio Engineering, Dongseo University, Busan, 617-716, South Korea

    Cha Cheol Park

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  1. Young Gwang Park
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Correspondence to Han Do Kim.

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Park, Y.G., Lee, Y.H., Rahman, M.M. et al. Preparation and properties of waterborne polyurethane/self-cross-linkable fluorinated acrylic copolymer hybrid emulsions using a solvent/emulsifier-free method. Colloid Polym Sci 293, 1369–1382 (2015). https://doi.org/10.1007/s00396-015-3504-0

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