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Fluoroalkyl-Modified Polysilazanes for Omniphobic Coatings

Author

Listed:
  • Tien Lo

    (University of Science and Technology)

  • Ha Soo Hwang

    (Korea Institute of Industrial Technology)

  • In Park

    (Korea Institute of Industrial Technology)

Abstract

Organic polysilazanes belong to a family of organosilicone polymers containing Si-N linkages. These materials have been used for hydrophobic coatings but fluoroalkyl chains are required for oleophobic surfaces. We herein suggest that fluoroalkyl-modified polysilazanes to provide omniphobic nature to solid surfaces. First CF3(CF2)7CH2CH2SiCH3Cl2 was synthesized with 1H,1H,2H-perfluoro-1-decene and Me2SiCl2 by hydrosilylation in the presence of Karstedt catalyst. CF3(CH2)2SiMeCl2, CF3(CF2)7CH2CH2SiMeCl2 or CF3(CF2)7CH2CH2SiMeCl2 was reacted with MeSiHCl2 in the presence of NH3 and pyridine by co-ammonolysis. Final products were examined by 1H-NMR, FT-IR and TGA. Water and oil (hexadecane) contact angles were measured with dip-coated samples on glass slides. The best omniphobic sample is the copolymer between CF3(CF2)7CH2CH2SiMeCl2 and MeSiHCl2 (7:3 weight ratio). The coated glass exhibited 110 degree and 48 degree of water and oil contact angles, respectively.

Suggested Citation

  • Tien Lo & Ha Soo Hwang & In Park, 2018. "Fluoroalkyl-Modified Polysilazanes for Omniphobic Coatings," Proceedings of International Academic Conferences 7709584, International Institute of Social and Economic Sciences.
    • Handle: RePEc:sek:iacpro:7709584
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    File URL: https://iises.net/proceedings/37th-international-academic-conference-budapest/table-of-content/detail?cid=77&iid=011&rid=9584
    File Function: First version, 2018
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    More about this item

    Keywords

    polysilazane; hydrophobic; fluoroalkyl; oleophobic;
    All these keywords.

    JEL classification:

    • L65 - Industrial Organization - - Industry Studies: Manufacturing - - - Chemicals; Rubber; Drugs; Biotechnology; Plastics

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