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Surface properties of alicyclic epoxy coatings modified with reactive copolymer containing fluorinated side chains

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Abstracts

An alicyclic epoxy resin was modified with a copolymer having both a perfluoroalkyl side chain and a cyclohexenoxide-terminated side chain. The copolymer had a good solubility in the epoxy matrix during the reaction of the alicyclic epoxy groups on the terminal end of the side chains. Thus, the cured epoxy resin had a homogeneous phase structure and was a colorless material with excellent transparency. The fluorinated side chains were highly self-segregated in the air-side surface (thickness: less than 8 nm) to minimize the interfacial free energy between the air and cured epoxy resin. The surface of the epoxy coatings had a significantly low surface free energy (ca. 20 mJ/m2) and revealed both high hydro- and oleo-phobicities. In addition, the surface had a gradient in the refractive index due to the self-stratification of the C–F bond that has a low polarizability.

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Authors and Affiliations

  1. Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamate-cho, Suita-shi, Osaka, 564-8680, Japan

    Mitsukazu Ochi, Natsuko Ichikawa, Ryou Shiota, Yoshiki Hattori & Miyuki Harada

  2. Showa Denko K. K., 5-1 Yahatakaigan-dori, Ichihara-shi, Chiba, 290-0067, Japan

    Masanao Hara & Hiroshi Uchida

Authors
  1. Mitsukazu Ochi
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  2. Natsuko Ichikawa
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  3. Ryou Shiota
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  4. Yoshiki Hattori
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  5. Miyuki Harada
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  6. Masanao Hara
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  7. Hiroshi Uchida
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Correspondence to Mitsukazu Ochi.

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Ochi, M., Ichikawa, N., Shiota, R. et al. Surface properties of alicyclic epoxy coatings modified with reactive copolymer containing fluorinated side chains. J Coat Technol Res 11, 913–921 (2014). https://doi.org/10.1007/s11998-014-9604-9

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  • DOI: https://doi.org/10.1007/s11998-014-9604-9

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