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Surface properties of fluorinated hybrid coatings
Author(s) -
Fabbri Paola,
Messori Massimo,
Montecchi Monica,
Pilati Francesco,
Taurino Rosa,
Tonelli Claudio,
Toselli Maurizio
Publication year - 2006
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.24350
Subject(s) - wetting , contact angle , materials science , oligomer , coating , substrate (aquarium) , surface roughness , composite material , surface finish , surface tension , chemical engineering , atomic force microscopy , surface modification , polymer chemistry , nanotechnology , engineering , geology , oceanography , physics , quantum mechanics
A commercial perfluoropolyether containing alkoxysilane functionalities was employed to prepare organic–inorganic hybrid coatings by using the sol‐gel process in the presence of tetraethoxysilane. Contact angle analysis revealed a strong hydrophobic and oleophobic character of the coatings almost independently from the molecular weight of the starting fluorinated oligomer. Surface tension values were in the range of 14–16 mN/m, suggesting a preferential segregation of fluorinated segments onto the surface of the coating. Atomic force microscopy showed the presence very smooth surfaces permitting to neglect the contribution of the surface roughness to wettability. Friction coefficient values were markedly lower with respect to the value of uncoated glass substrate. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 1483–1488, 2006