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.
|Titolo:||Wettability and dyeability modulation of poly(ethylene terephthalate) fibers through cold SF6 plasma treatment|
|Autori interni:||SELLI, ELENA|
POLETTI, GIULIO (Penultimo)
|Parole Chiave:||Atomic force microscopy (AFM); ESCA/XPS; Fibers; Poly(ethylene terephthalate) (PET); SF6 plasma treatment; Surfaces|
|Settore Scientifico Disciplinare:||Settore CHIM/02 - Chimica Fisica|
Settore FIS/01 - Fisica Sperimentale
|Data di pubblicazione:||2005|
|Digital Object Identifier (DOI):||10.1002/ppap.200400054|
|Appare nelle tipologie:||01 - Articolo su periodico|
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