Fluoroalkyl-Modified Polysilazanes for Omniphobic Coatings

Tien Lo (), Ha Soo Hwang () and In Park ()
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Tien Lo: University of Science and Technology
Ha Soo Hwang: Korea Institute of Industrial Technology
In Park: Korea Institute of Industrial Technology

No 7709584, Proceedings of International Academic Conferences from International Institute of Social and Economic Sciences

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.

Keywords: polysilazane; hydrophobic; fluoroalkyl; oleophobic (search for similar items in EconPapers)
JEL-codes: L65 (search for similar items in EconPapers)
Pages: 1 page
Date: 2018-07
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Published in Proceedings of the Proceedings of the 37th International Academic Conference, Budapest, Jul 2018, pages 59-59

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