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Synthesis and surface properties of self-crosslinking core–shell acrylic copolymer emulsions containing fluorine/silicone in the shell

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Abstract

Stable emulsions of a core–shell acrylic copolymer (non-crosslinkable V0, and crosslinkable V2, V4, V6, and V8, where the numbers indicate the wt% of crosslinking agent based on the total acrylate monomer content) containing butyl acrylate (BA, 45 wt%), glycidyl methacrylate (GMA, 45 wt%), heptadecafluorodecyl methacrylate (PFA, 10 wt%), and various contents of crosslinking agent (vinyltriethoxysilane, VTES) were synthesized using a three-stage seeded emulsion polymerization process with a small amount of surfactant. The average particle size and viscosity of emulsions increased significantly with increasing VTES content. This study examined the effects of the VTES content on the surface/mechanical properties of self-crosslinked copolymer film samples containing a fixed acrylate monomer content to find the optimum VTES content. XPS showed that the film–air surface of the copolymer samples had a higher fluorine/silicone content than the film–dish interface. The tensile strength/modulus, thermal stability, and two Tgs (α and β Tgs) of the film samples increased significantly with increasing VTES content. The contact angle of the film samples increased with increasing VTES content up to approximately 6 wt%, and then decreased slightly. The optimum VTES content was approximately 6 wt% based on the total acrylate monomer content to obtain a high water/oil repellent coating material (V6) with the highest water/methylene iodide-contact angles (118.2°/81.8°) and lowest surface energy (18.4 mN/m).

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Acknowledgments

This work was supported by the Basic Science Research Program through NRF funded by the Ministry of Education, Science and Technology (NRF-2012R1A1A2003643).

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Authors and Affiliations

  1. Department of Organic Material Science and Engineering, College of Engineering, Pusan National University, 30 Jangjeon-dong, Geumjeong-Gu, Busan, 609-735, South Korea

    Do Hyung Kim, Young Hee Lee & Han Do Kim

  2. Division of Energy and Bio Engineering, Dongseo University, Busan, 617-716, South Korea

    Cha Cheol Park

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  1. Do Hyung Kim
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  2. Young Hee Lee
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Correspondence to Cha Cheol Park or Han Do Kim.

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Kim, D.H., Lee, Y.H., Park, C.C. et al. Synthesis and surface properties of self-crosslinking core–shell acrylic copolymer emulsions containing fluorine/silicone in the shell. Colloid Polym Sci 292, 173–183 (2014). https://doi.org/10.1007/s00396-013-3064-0

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