Title of article :
Plasma surface treatment of poly acrylonitrile/films by
fluorocarbon compounds
Author/Authors :
Fabienne Hochart، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 1999
Abstract :
This paper concerns the use of the low-pressure plasma process to confer an hydrophobic character to poly acrylonitrile.
films, without altering their bulk properties. Plasma based fluorination processes using saturated fluorine compounds such as
CF4, C6F14 and mixtures CF4rH2 were used. Such treated polyacrylonitrile films were characterized by XPS analysis,
infrared ATR.spectroscopy and contact angle measurements. The use of CF4 led to the fluorination of the film surfaces.
Indeed, XPS spectra showed the presence of -CHF-, -CF2- and -CF3groups. Moreover, the contact angle u which was 638
for untreated PAN films increased to 1158. Fluorine incorporation in the PAN disappeared when hydrogen is added to CF4.
In the case of treatment by C6F14, fluorination was accompanied by a polymerization, as evidenced by XPS with the
disappearance of the N 1s photopeak corresponding to the CʹN functions in PAN. By considering the deposition of Fcontaining
layer thickness, it was possible in this latter case to follow the surface modifications by ATR-i.r. spectroscopy.
q1999 Elsevier Science B.V. All rights reserved.
Keywords :
Plasma , Hydrophobicity , Poly acrylonitrile. , Fluorocarbons , XPS , Surface modification
Journal title :
Applied Surface Science
Journal title :
Applied Surface Science