Optimization of Enzymatic Treatment and Reactive Dyeing of viscose fabric in One-bath Process
El Shehry, A., Youssef, Y., Ahmed, N., Soliman, E., Hashem, A. (2022). Optimization of Enzymatic Treatment and Reactive Dyeing of viscose fabric in One-bath Process. EKB Journal Management System, 65(5), 647-656. doi: 10.21608/ejchem.2021.103096.4774
Ashraf S El Shehry; Yehya Youssef; Nour El Din Ahmed; Emad Soliman; Ahmad Hashem. "Optimization of Enzymatic Treatment and Reactive Dyeing of viscose fabric in One-bath Process". EKB Journal Management System, 65, 5, 2022, 647-656. doi: 10.21608/ejchem.2021.103096.4774
El Shehry, A., Youssef, Y., Ahmed, N., Soliman, E., Hashem, A. (2022). 'Optimization of Enzymatic Treatment and Reactive Dyeing of viscose fabric in One-bath Process', EKB Journal Management System, 65(5), pp. 647-656. doi: 10.21608/ejchem.2021.103096.4774
El Shehry, A., Youssef, Y., Ahmed, N., Soliman, E., Hashem, A. Optimization of Enzymatic Treatment and Reactive Dyeing of viscose fabric in One-bath Process. EKB Journal Management System, 2022; 65(5): 647-656. doi: 10.21608/ejchem.2021.103096.4774

Optimization of Enzymatic Treatment and Reactive Dyeing of viscose fabric in One-bath Process

Egyptian Journal of Chemistry
Article 61, Volume 65, Issue 5, May 2022, Page 647-656  XML PDF (580.19 K)
Document Type: Original Article
DOI: 10.21608/ejchem.2021.103096.4774
View on SCiNiTO View on SCiNiTO
Authors
Ashraf S El Shehry1; Yehya Youssef email orcid 2; Nour El Din Ahmedorcid 3; Emad Soliman4; Ahmad Hashemorcid 5
1Textile Dyeing & Finishing, Modern Kobba For Weaving & Finishing Co., Al-Obour City, Egypt.
2Dyeing, Printing and Auxiliaries Department, Textile Research and Technology Institute, National Research Center, Cairo 12622, Egypt
3Ain shams university, faculty of science
4Advanced Technology’s and New Materials Institute, City of Scientific Research and Technology Applications, New Borg El-Arab City, 21934 Alexandria, Egypt.
5Chemistry Dept, Science Faculty, Ain Shams Univ,
Abstract
Conventional pretreatment and dyeing processes of viscose fabric are mainly conducted in two baths with substantial amounts of water and auxiliaries. These processes comprise one bath of two–stages for enzymatic de-sizing and alkaline treatment adopted using sodium carbonate with peroxide bleaching formulations and a second bath for the dyeing process. In this study, a regular viscose woven fabric was initially pretreated with a commercial desizing enzyme and subsequently dyed with different reactive dyes in the same exhaust bath process. The effect of one-bath enzymatic pretreatment and reactive dyeing was investigated and optimized, employing enzyme and mono- and/or bifunctional reactive dyes at various concentrations.The results showed that the one-bath pretreatment and dyeing process could be performed successfully, exhibiting remarkable colour strength and excellent performance equal to that with the conventional pretreatment and dyeing method. Both the pretreated fabrics via the bio-method and the conventional one exhibited approximately equal efficiency in terms of improved dyeing and fastness properties. The bifunctional reactive dyes, RR 195 and RBl 5, exhibited higher degrees of dye exhaustion and total fixation yield than those of the monofunctional reactive dyes, RR 180 and RR 31. Although the shorter the one-bath enzymatic pretreatment and dyeing process, all the reactive dyeings using this Bio-method showed comparable CIE L*b*a* and colour difference values E to the conventionally dyed sample using Conv-method, particularly in the case of bifunctional dyes.
Keywords
Viscose Fabric; Enzyme; Pretreatment; Reactive Dyes; Dyeing
Statistics
Article View: 589
PDF Download: 519