Effects of Various Decolorizing Agents on Waste Cotton Fabric Dyed with Reactive Dyes

Abstract Shorter fashion cycles have led to the rapid accumulation of unwanted and waste textiles. Compared to light-coloured textiles, the dark-coloured ones are more difficult to recycle and reuse, and their incineration and landfilling have negative environmental consequences. A technology that sufficiently decolorizes these textiles without causing major damage to their structure and properties is therefore useful. In this study, a waste cotton fabric containing vinyl sulfone reactive dyes was subjected to chemical treatments with different oxidants and/or reducing agent. The effects of various treatments on the fabric’s coloration and mechanical properties were compared. The two-step treatment using first Na2S2O4 and then H2O2 showed the best performance, achieving a CIE whiteness index of 65.1, 19.3% tensile strength loss, 1.8% weight loss, 93.5% decolouration rate, and a degree of polymerization of 747.7. A mechanism was proposed to explain the synergistic decolorization process.

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Preparation of a Cationic Environment-friendly Fixing Agent

Fibres and Textiles in Eastern Europe ◽

10.5604/01.3001.0010.5378 ◽

2017 ◽

Vol 25 (0) ◽

pp. 96-102 ◽

Cited By ~ 1

Author(s):

Yuanjun Liu ◽

Xiaoming Zhao

Keyword(s):

Cotton Fabric ◽

Reactive Dyes ◽

Structure And Properties ◽

Optimum Conditions ◽

Cationic Protein ◽

Environment Friendly ◽

Infrared Spectral ◽

Spectral Characterisation ◽

Maximum Absorption Wavelength

Initially waste feather protein was used to prepare a reactive cationic crosslinking modified agent, WLS, as a starting material which was used to prepare a quaternary ammonium type cationic environment-friendly fixing agent (named WLSPR) for dyeing cotton fabric with reactive dyes after solid colour processing. In this paper, the degree of staining on white cloth from colored cloth after a soaping process was assessed (by determination of the K/S value) as well as the washing fastness etc. as the evaluation indices. The optimum synthetic conditions of fixing agent WLSPR were determined, and the structure and properties of the additives characterised. The results show that the maximum absorption wavelength of the cationic protein fixing agent WLSPR is 195nm. Synthesis of the environment-friendly fixing agent WLSPR using optimum conditions can reduce white staining during soap washing , effectively improving the cotton fabric in terms of colour fastness to washing and rubbing fastness. Based on infrared spectral characterisation, it was confirmed that the protein-based cationic auxiliary additives were synthesised.

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Study on the Enzyme Desizing Process for Cotton Fabric Using Ultrasonication

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.331.261 ◽

2011 ◽

Vol 331 ◽

pp. 261-264 ◽

Cited By ~ 1

Author(s):

Qi Ming Zhao ◽

Shan Yan Zhang

Keyword(s):

Cotton Fabric ◽

Ph Value ◽

Orthogonal Experiment ◽

Research Result ◽

Strength Loss ◽

Cotton Fabrics ◽

Optimum Process ◽

Process Conditions ◽

Fabric Strength ◽

Enzyme Dosage

The auxiliary devices of ultrasonic treatment was designed and manufactured. The cotton fabric was desized using 2000L desizing enzyme with the conventional enzyme desizing process and ultrasonic enzyme desizing process respectively. Through the orthogonal experiment, the optimum process conditions of conventional enzyme desizing process and ultrasonic enzyme desizing process were determined. For the conventional enzyme desizing process, the optimized desizing conditions of cotton fabrics were: desizing enzyme dosage was 1.5g/l, temperature was 80°C, PH value was 6, and time was 60mins. The optimum process conditions of ultrasonic enzyme desizing process were: desizing enzyme dosage was 1.5g/l, temperature was 50°C, PH value was 6 and time was 45minutes. The research result indicates that, under the same desizing condition, ultrasonication can improve the desizing percentage and whiteness of cotton fabric, but the fabric strength loss increases slightly. And for the same required desizing percentage, the ultrasonic enzyme desizing process saved time and reduced the temperature of experiments compared with traditional enzyme desizing process

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Synthesis and Dyeing Properties of Bifunctional Reactive Dyes via 4-(4-Phenyl)-1, 3-Thiazol-2-Amine and 4-(4-bromophenyl)-1, 3-Thiazol –2-Amine on Cotton Fabric

Asian Journal of Textile ◽

10.3923/ajt.2013.1.7 ◽

2012 ◽

Vol 3 (1) ◽

pp. 1-7 ◽

Cited By ~ 1

Author(s):

A.I. Ezeribe ◽

K.A. Bello ◽

H.M. Adamu ◽

C.J. Chukwu ◽

D.A. Boryo ◽

...

Keyword(s):

Cotton Fabric ◽

Reactive Dyes ◽

Dyeing Properties

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Development of hydrophilic anti-crease finishing method for Cotton fabric using alpha-Lipoic acid without causing strength loss and formaldehyde release problem

Progress in Organic Coatings ◽

10.1016/j.porgcoat.2020.106042 ◽

2021 ◽

Vol 151 ◽

pp. 106042

Author(s):

Cong Huang ◽

Nan Zhang ◽

Qiang Wang ◽

Ping Wang ◽

Yuanyuan Yu ◽

...

Keyword(s):

Cotton Fabric ◽

Lipoic Acid ◽

Strength Loss ◽

Alpha Lipoic Acid ◽

Formaldehyde Release

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Application of Multifunctional Reactive Dyes on the Cotton Fabric and Conditions Optimization by Response Surface Methodology

Journal of Natural Fibers ◽

10.1080/15440478.2020.1789532 ◽

2020 ◽

pp. 1-13

Author(s):

Umme Habibah Siddiqua ◽

Shaukat Ali ◽

Tanveer Hussain ◽

Munawar Iqbal ◽

Nasir Masood ◽

...

Keyword(s):

Response Surface Methodology ◽

Response Surface ◽

Cotton Fabric ◽

Reactive Dyes

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Attempts to reduce water and chemical usage in the removal of bifunctional reactive dyes from cotton: Part 2 bis(vinyl sulfone), aminochlorotriazine/vinyl sulfone and bis(aminochlorotriazine/vinyl sulfone) dyes

Dyes and Pigments ◽

10.1016/j.dyepig.2010.07.001 ◽

2011 ◽

Vol 88 (2) ◽

pp. 220-229 ◽

Cited By ~ 30

Author(s):

S.M. Burkinshaw ◽

O. Kabambe

Keyword(s):

Reactive Dyes ◽

Vinyl Sulfone ◽

Chemical Usage

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Improved Durable-Press Cotton via Polymeric N-Methylol Reagents

Textile Research Journal ◽

10.1177/004051757604600501 ◽

1976 ◽

Vol 46 (5) ◽

pp. 311-318 ◽

Cited By ~ 5

Author(s):

Noelie R. Bertoniere ◽

Stanley P. Rowland

Keyword(s):

Cotton Fabric ◽

Abrasion Resistance ◽

Degree Of Polymerization ◽

Durable Press ◽

Crosslinking Reagent

Polyethylenimines, degree of polymerization = 7 and 14, were reacted with urea to form polymeric noncyclic analogues of ethyleneurea that were subsequently treated with formaldehyde to yield N-methylol derivatives. These reagents were applied to cotton fabric both alone and in combination with dimethyloldihydroxyethyleneurea. Al2(OH)5Cl·2H2O was the preferred crosslinking catalyst. Fabrics finished with these crosslinking reagent systems had durable-press properties generally comparable to those of fabrics prepared by conventional techniques but were characterized by significantly higher levels of retained strength and abrasion resistance.

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