Cationic Starch (Q-TAC) Pre-Treatment of Cotton Fabric: Influence on dyeing with reactive dye

Title
Cationic Starch (Q-TAC) Pre-Treatment of Cotton Fabric: Influence on dyeing with reactive dye
Authors
김성훈
Keywords
Reactive dyes; Cationic chemical reagents; Cationic starch; Color yield; Dye fixation
Issue Date
2015-03
Publisher
ELSEVIER SCI LTD
Citation
CARBOHYDRATE POLYMERS, v. 117, Page. 271-278
Abstract
Reactive dyes require high concentrations of an electrolyte to improve dye-fiber interaction, leading to the discharge of harmful effluent. One approach to reduce this unsafe release is treatment of the cotton fabric with cationic chemical reagents. This paper reports on the treatment of cotton fabric with cationic starch (Q-TAC), a commercial product, by batchwise method and pad batch method for the first time prior to reactive dyeing process. Furthermore, three commercial reactive dyes, based on monochloro triazine, vinyl sulfone and monochlorotriazine + vinyl sulfone chemistry, was applied on the cotton fabrics by continuous (pad-dry-cure) method. The treated cotton fabric by batchwise method produced 70% higher color yield (KIS) and 20% enhanced dye fixation (%F) than the untreated cotton fabric. X-ray photoelectron spectrometer (XPS) analysis revealed the presence of Nls peaks in the treated cotton fabrics. The crystallinity of treated cotton fabrics was reduced in comparison to untreated cotton fabric as revealed by wide angle X-ray diffraction (WAXD) measurements. Field Emission Scanning Electron Microscopy (FE-SEM) showed that the surface of treated cotton fabrics was rougher than untreated cotton fabric due to the deposition of cationic starch. Attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectrum confirmed the existence of quaternary ammonium groups, N+(CH3)(3), in the treated cotton fabrics. The analysis of color fastness tests demonstrated good to excellent ratings for treated cotton fabrics. In this way, cationic starch treatment of cotton fabric before reactive dyeing process has been proven potentially a more environmentally sustainable method than conventional dyeing method. (C) 2014 Elsevier Ltd. All rights reserved.
URI
http://www.sciencedirect.com/science/article/pii/S0144861714009746http://hdl.handle.net/20.500.11754/22863
ISSN
0144-8617; 1879-1344
DOI
http://dx.doi.org/10.1016/j.carbpol.2014.09.064
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ORGANIC AND NANO ENGINEERING(유기나노공학과) > Articles
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