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Title: Monomolecular silane films on glass surfaces - contact angle measurements
Authors: Zybill, C.E. 
Ang, H.G. 
Lan, L.
Choy, W.Y.
Meng, E.F.K.
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
ISSN: 0022328X
Appears in Collections:Staff Publications

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