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|Title:||Monomolecular silane films on glass surfaces - contact angle measurements||Authors:||Zybill, C.E.
|Issue Date:||20-Nov-1997||Citation:||Zybill, C.E.,Ang, H.G.,Lan, L.,Choy, W.Y.,Meng, E.F.K. (1997-11-20). Monomolecular silane films on glass surfaces - contact angle measurements. Journal of Organometallic Chemistry 547 (1) : 167-172. ScholarBank@NUS Repository.||Abstract:||Contact angle measurements have been done for silanized glass plates with 11 different coatings. For a monomolecular film of tridecafluoro-1,1,2,2-tetrahydrooctyl-1-triethoxysilyl groups on a glass surface, contact angles (water 24°C) have been measured to θa = 111°, θr = 99°. The figures are comparable with those obtained for bulk Teflon, but with smaller hysteresis behaviour. The silanes are believed to form chemically anchored monomolecular films with a densest array of aliphatic side chains. MM2 calculations for model compounds reveal significant attractive van der Waals forces between the aliphatic chains, which can be seen as a driving force for a 2D self-assembly on the surface. This high state of order is assumed to play a crucial role for optimum hydrophobization. Furthermore, photochemical crosslinking has been done with films of 7-oct-1-enyltrimethoxysilane to increase the wear resistance of the coatings. © 1997 Elsevier Science S.A.||Source Title:||Journal of Organometallic Chemistry||URI:||http://scholarbank.nus.edu.sg/handle/10635/94322||ISSN:||0022328X|
|Appears in Collections:||Staff Publications|
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