Journal
JOURNAL OF APPLIED POLYMER SCIENCE
Volume 109, Issue 1, Pages 160-166Publisher
WILEY
DOI: 10.1002/app.27899
Keywords
dyes/pigments; fibers; morphology; polyesters; stiffness
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The effect of a low-temperature plasma and/or chitosan pretreatment as a mordant on the dyeing of poly(ethylene terephthalate) fabrics with an aqueous extract of Caesalpinia sappan L. wood, which showed a remarkably high coloring property in a natural dyeing system, was investigated. After dyeing, scanning electron microscopy, add-on, color measurements, and fastness to washing tests were performed. Dyeing with the C. sappan L. extract led to fair-to-good fastness properties in conventional natural dyeing. The results clearly show that the pretreatment with chitosan and/or plasma is better than a metal mordant in terms of the dye uptake and reduction in the dyeing time, that the proposed pretreatment coloration reaction could be carried out without the need for repetitive dye steps, and that it prevents the excessive use of dye chemicals, thereby resulting in a more ecofriendly process. (C) 2008 Wiley Periodicals, Inc.
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