期刊
APPLIED SURFACE SCIENCE
卷 211, 期 1-4, 页码 386-397出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0169-4332(03)00265-4
关键词
RF plasma treatment; poly(ethylene terephthalate) fibers; hydrophilicity; etching; plasma diagnostics
The surface chemical and physical modifications of poly(ethylene terephthalate) (PET) fibers induced by radiofrequency air plasma treatments were correlated with the characteristics of the discharge parameters and the chemical composition of the plasma itself, to identify the plasma-induced surface processes prevailing under different operating conditions. Treated polymer surfaces were characterized by water droplet absorption time measurements and XPS analysis, as a function of the aging time in different media, and by AFM analysis. They exhibited a remarkable increase in hydrophilicity, accompanied by extensive etching and by the implantation of both oxygen- and nitrogen-containing polar groups. Etching was mainly a consequence of ion bombardment, yielding low molecular weight, water soluble oxidation products, while surface chemical modifications were mainly due to the action of neutral species on the plasma-activated polymer surface. (C) 2003 Elsevier Science B.V. All rights reserved.
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