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Superhydrophobic fabrics prepared by silica coating

Lin, Tong, Wang, Hongxia, Fang, Jian and Wang, Xungai 2008, Superhydrophobic fabrics prepared by silica coating, in Proceedings of the Fiber Society Spring Conference 2008, The Fiber Society, Mulhouse, France, pp. 48-49.

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Title Superhydrophobic fabrics prepared by silica coating
Author(s) Lin, TongORCID iD for Lin, Tong
Wang, Hongxia
Fang, JianORCID iD for Fang, Jian
Wang, Xungai
Conference name The Fiber Society Spring Conference (2008 : Mulhouse, France)
Conference location Universite de Haute Alsace, France
Conference dates 14-16 May 2008
Title of proceedings Proceedings of the Fiber Society Spring Conference 2008
Publication date 2008
Start page 48
End page 49
Total pages 2
Publisher The Fiber Society
Place of publication Mulhouse, France
Summary In this work, a silica sol prepared by co-hydrolysis and co-condensation of TEGS (Tetraethylrthosilicate) and alkyl silane under alkaline condition was applied to polyester, wool, and cotton fabrics. The water contact angle measurement indicated considerable increase in the surface hydrophobicity of the sol-treated fabrics. Five different alky silanes were used, namely methyltritthoxysilane (MTES), pheryl triethoxysilane (PTES), n-octyltricthoxysilane (OTES), hexadecyl trimethoxysilan (HDTMS), and tridecafluorooctyl triethoxysilane (FAS), and the water contact anglc (CA) for the coated fabrics ranged between 1300 and 174°. The alkyl silane used influenced the CA valuc, and the silica coating from FAS, HDTMS and PTES snowed CA value greater than ISO', indicating the formation of superhydrophobicity. The fabric coated by the fluorinated silica (TEOS/FAS) has a water contact angle as high as 174°. The treated polyester fabric showed a slightly higher CA value than the wool and cotton fabrics, under the same coating condition.
The coating surface was characterized by SEM, EDX, TEM, FTlR, XPS and AFM. The results showed that silica nanoparticles with thc sizc in the range of 50-ISOnm werc formed in the cohydrolyzed silica sol, and these particles had a core-shell structure with many alkyl groups gathering on the surface region. The formation of superhydrophobic surface was attributed to the nano-structured surface coating with a low surface energy.
Notes Presented at the conference by Tong Lin.
Language eng
Field of Research 091209 Polymers and Plastics
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category EN Other conference paper
Copyright notice ©2008, Fiber Society
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Document type: Conference Paper
Collection: Centre for Material and Fibre Innovation
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Created: Fri, 11 Sep 2009, 10:41:04 EST

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