Surface modification induced on poly(ethylene terephthalate) (PET) fibers by cold SF6 plasma treatment has been investigated systematically as a function of plasma device parameters. The observed wettability modifications of fibers plasma-treated under different operating conditions were correlated to their dyeability modifications and to the changes in surface chemical composition, determined by X-ray Photoelectron Spectroscopy (XPS), and topography, investigated by atomic force microscopy (AFM). Optical emission spectra from the SF6 plasma at different pressures gave information on its content of fluorine atoms. A striking transition was observed between the increased hydrophilicity and high dyeability, imparted by plasma treatment at low pressure (<0.2 mbar), mainly as a consequence of surface etching and surface activation, and the increased hydrophobicity, imparted by plasma treatment in the higher pressure regime (0.2-0.4 mbar), consequent to extended surface fluorination.

Wettability and dyeability modulation of poly(ethylene terephthalate) fibers through cold SF6 plasma treatment / R. Barni, C. Riccardi, E. Selli, M.R. Massafra, B. Marcandalli, F. Orsini, G. Poletti, L. Meda. - In: PLASMA PROCESSES AND POLYMERS. - ISSN 1612-8850. - 2:1(2005), pp. 64-72.

Wettability and dyeability modulation of poly(ethylene terephthalate) fibers through cold SF6 plasma treatment

E. Selli;F. Orsini;G. Poletti
Penultimo
;
2005

Abstract

Surface modification induced on poly(ethylene terephthalate) (PET) fibers by cold SF6 plasma treatment has been investigated systematically as a function of plasma device parameters. The observed wettability modifications of fibers plasma-treated under different operating conditions were correlated to their dyeability modifications and to the changes in surface chemical composition, determined by X-ray Photoelectron Spectroscopy (XPS), and topography, investigated by atomic force microscopy (AFM). Optical emission spectra from the SF6 plasma at different pressures gave information on its content of fluorine atoms. A striking transition was observed between the increased hydrophilicity and high dyeability, imparted by plasma treatment at low pressure (<0.2 mbar), mainly as a consequence of surface etching and surface activation, and the increased hydrophobicity, imparted by plasma treatment in the higher pressure regime (0.2-0.4 mbar), consequent to extended surface fluorination.
Atomic force microscopy (AFM); ESCA/XPS; Fibers; Poly(ethylene terephthalate) (PET); SF6 plasma treatment; Surfaces
Settore CHIM/02 - Chimica Fisica
Settore FIS/01 - Fisica Sperimentale
2005
Article (author)
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/16227
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