[직/편성물 염색] Effects of Plasma Treatment of Wool on the Uptake of Sulfonated Dyes with Different Hydrophobic Properties 출판일 : 2010.03.01 저자 : Muryam Naebe, Peter G. Cookson, John Rippon, Rex Peter Brady, Xungai Wang, Narelle Brack, Grant van Riessen 서지사항 : Textile Research Journal, Volume 80, Issue 4, 312페이지 등록일 : 2011.06.23 I 조회수 : 100 작성자 : admin |
A wool fabric has been subjected to an atmospheric-pressure treatment with a helium
plasma for 30 seconds. X-ray photoelectron spectroscopy and time-of-flight secondary ion
mass spectrometry confirmed removal of the covalently-bound fatty acid layer (F-layer) from
the surface of the wool fibers, resulting in exposure of the underlying, hydrophilic protein
material. Dye uptake experiments were carried out at 50°C to evaluate the effects of plasma
on the rate of dye uptake by the fiber surface, as well as give an indication of the
adsorption characteristics in the early stages of a typical dyeing cycle. The dyes used were
typical, sulfonated wool dyes with a range of hydrophobic characteristics, as determined by
their partitioning behavior between water and n-butanol. No significant effects of plasma on
the rate of dye adsorption were observed with relatively hydrophobic dyes. In contrast, the
relatively hydrophilic dyes were adsorbed more rapidly (and uniformly) by the plasma-
treated fabric. It was concluded that adsorption of hydrophobic dyes on plasma-treated
wool was influenced by hydrophobic interactions, whereas electrostatic effects
predominated for dyes of more hydrophilic character. On heating the dyebath to 90°C in
order to achieve fiber penetration, no significant effect of the plasma treatment on the extent
of uptake or levelness of a relatively hydrophilic dye was observed as equilibrium
conditions were approached.
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