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In situ synthesis of a double-layer chitosan coating on cotton fabric to improve the color fastness of sodium copper chlorophyllin
journal contribution
posted on 2020-11-26, 00:00 authored by Zhong Zhao, Christopher HurrenChristopher Hurren, Mingwen Zhang, Liming Zhou, Jihong Wu, Lu SunNatural dye’s poor affinity for cotton and poor fastness properties still hinder its applications in the textile industry. In this study, a doubled-layered chitosan coating was cured on cotton fabric to serve as bio-mordant and form a protective layer on it. Under the optimal treatment conditions, the maximum qe (adsorption amount) of the natural dye sodium copper chlorophyllin (SCC) calculated from the Langmuir isothermal model was raised from 4.5 g/kg to 19.8 g/kg. The dye uptake of the treated fabric was improved from 22.7% to 96.4% at 1% o.w.f. dye concentration. By a second chitosan layer cured on the dyed fabric via the cross-linking method, the wash fastness of the cotton fabric dyed with SCC can be improved from 3 to 5 (ISO 105 C-06). The natural source of the biopolymer material, chitosan, and its ability to biodegrade at end of life met with the initial objective of green manufacturing in applying natural dyes and natural materials to the textile industry.
History
Journal
MaterialsVolume
13Issue
23Article number
5365Pagination
1 - 16Publisher
MDPI AGLocation
Basel, SwitzerlandPublisher DOI
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ISSN
1996-1944eISSN
1996-1944Language
engPublication classification
C Journal article; C1 Refereed article in a scholarly journalUsage metrics
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