Please use this identifier to cite or link to this item: https://hdl.handle.net/11499/6120
Title: Clearing of dyed poly(lactic acid) fabrics under acidic and alkaline conditions
Authors: Avinç, Osman Ozan
Keywords: aftertreatment
clearing
disperse dye
PLA
Poly(lactic acid)
reducing agent
After-treatment
Body fluids
Color
Dyeing
Lactic acid
pH
Alkalinity
Abstract: This study has been conducted to examine the influence of different clearing treatments, following dyeing using different clearing agents under acidic and alkaline pH conditions, on the colour fastness and colour properties of poly(lactic acid) fabrics dyed with alkali-sensitive and alkali-stable disperse dyes. Wet-fastness properties of poly(lactic acid) fibres dyed with both alkali-sensitive and alkali-stable disperse dyes were improved to the commercially acceptable levels with a clearing treament at 60°C for 15 minutes using the right combination of the chemistry of the dye, clearing agent type and pH condition (pH 5 and pH 10.7) of the applied clearing bath. Overall, successful clearing treatments, judged by high wet fastness results, exhibited approximately similar performances for each dyeing compared to a non-cleared control sample. These clearing treatments led to a very slight decrease in colour yield (f(k)), slightly higher chroma (C*), higher lightness (L*) and therefore brighter appearance without significant shade change. No poly(lactic acid) polymer degradation occurred during clearing whichever clearing agent is used, and whether the conditions are acidic or alkaline. © 2011, SAGE Publications. All rights reserved.
URI: https://hdl.handle.net/11499/6120
https://doi.org/10.1177/0040517511398940
ISSN: 0040-5175
Appears in Collections:Mühendislik Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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