Comprehensive study on cellulose swelling for completely recyclable nonaqueous reactive dyeing

Luyi Chen, Bijia Wang, Jiangang Chen, Xinhui Ruan, Yiqi Yang

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The swelling of cotton by non-nucleophilic organic solvents was investigated to achieve completely recyclable reactive dyeing. The degree of swelling was determined and correlated to the Hansen Solubility Parameter distance (Ra) of cellulose to the solvents and the dielectric constant of the solvents (ε). The effect of swelling temperature was also investigated. Preswelling of cotton fabrics by 150 °C N,N-dimethylacetamide (DMAc) for 1 h was found to be sufficient to accelerate dye sorption. Dyeing was carried out using C.I. Reactive Red 24 in a 40/60 mixture of DMAc and dimethylcarbonate (DMC), a cosolvent selected to facilitate dye exhaustion. The efficiency of unfixed dye removal was found to predominantly correlate to swelling (R2 = 0.9236). Excellent colorfastness was achieved with 4 rinses by 95 °C DMAc. A 10-cycle repeated dyeing sequence was demonstrated to give 43% and 90% reduction in dye consumption and disposal. The overall reduction in material disposal was estimated to be over 99.99%. The favorable results indicated that discharge-free reactive dyeing could be made possible.

Original languageEnglish (US)
Pages (from-to)2439-2446
Number of pages8
JournalIndustrial and Engineering Chemistry Research
Volume54
Issue number9
DOIs
StatePublished - Mar 11 2015

Fingerprint

Cellulose
Dyeing
Swelling
Coloring Agents
Dyes
Cotton fabrics
Organic solvents
Cotton
Sorption
Permittivity
Solubility
dimethylacetamide
Temperature

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

Cite this

Comprehensive study on cellulose swelling for completely recyclable nonaqueous reactive dyeing. / Chen, Luyi; Wang, Bijia; Chen, Jiangang; Ruan, Xinhui; Yang, Yiqi.

In: Industrial and Engineering Chemistry Research, Vol. 54, No. 9, 11.03.2015, p. 2439-2446.

Research output: Contribution to journalArticle

Chen, Luyi ; Wang, Bijia ; Chen, Jiangang ; Ruan, Xinhui ; Yang, Yiqi. / Comprehensive study on cellulose swelling for completely recyclable nonaqueous reactive dyeing. In: Industrial and Engineering Chemistry Research. 2015 ; Vol. 54, No. 9. pp. 2439-2446.
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