Chemical Modification of Cotton Fabrics with Polyhexamethylene Guanidine for Salt-Free Dyeing with Reactive Dyes. Issue 1 (31st December 2023)

• Record Type: Journal Article
• Authors: Wu, Yanxiu; Niu, Tianjie; Zhai, Xiaolei; Sun, Deshuai; Zhang, Xiaodong; Fang, Long
• Is Part Of: Journal of natural fibers. Volume 20:Issue 1(2023)
• Publication Date: 2023-12-31
• Subjects: Cotton fabrics -- sodium hypochlorite -- 2, 2, 6, 6-tetramethylpiperidin-1-oxyl radical -- polyhexamethylene guanidine -- oxidation reaction -- Schiff base reaction; 棉织物; Cotton fabrics -- 次氯酸钠; Sodium hypochlorite -- 2, 2, 6, 6-四甲基哌啶-1-氧基 ; 2, 2, 6, 6-tetramethylpiperidin-1-oxyl radical -- 聚六亚甲基胍; polyhexamethylene guanidine; -- 氧化反应; Oxidation reaction -- 席夫碱反应; Schiff base reaction; Textile research -- Periodicals; Textile research; Periodicals; 677.005
• DOI: 10.1080/15440478.2022.2156963
• Languages: English
• ISSNs: 1544-0478

Abstract

ABSTRACT: To realize clean dyeing of cotton fabrics, a new modification process was proposed. First, oxidized cotton fabrics were obtained by using 2, 2, 6, 6-tetramethylpiperidin-1-oxyl radical and sodium hypochlorite in the form of selective oxidation. Cationic cotton fabrics were prepared by the Schiff base reaction between polyhexamethylene guanidine and oxidized cotton fabrics. The chemical structure and surface morphology of the modified cotton fabrics were analyzed by Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction and scanning electron microscope. Salt-free dyeing of modified cotton fabrics with four commercial reactive dyes was carried out, which was compared with the raw cotton fabrics dyed in the conventional dyeing. The result revealed that the color fastness of cotton cloth before and after modification was similar. The exhaustion rate and the total utilization of modified cotton fabrics increased by 20–30% and 30%, respectively. At the same time, the fixation rate reached more than 90%. In addition, mechanical properties of modified fabrics could be fully met with the application standard for dyed fabrics.