One Step Printing and Functionalization of Microwave Pretreated PET Fabric Using New Azo Amino Thiazole Disperse Dye
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ISSN 1229-9197 (print version) ISSN 1875-0052 (electronic version)
One Step Printing and Functionalization of Microwave Pretreated PET Fabric Using New Azo Amino Thiazole Disperse Dye Tarek Abou Elmaaty1*, Shaimaa M. Ramadan1, Khaled El-Nagar2, Dalia Zaghloul3, and Fathi El-Taweel4 1
Department of Textile Printing, Dyeing and Finishing, Faculty of Applied Arts, Damietta University, Damietta 34512, Egypt 2 Textile Metrology Lab., National Institute for Standards, AL Haram, Giza 12211, Egypt 3 Graduate School of Engineering, University of Fukui, Fukui 910-8507, Japan 4 Department of Chemistry, Faculty of Science, Damietta University, New Damietta, 34517, Egypt (Received March 20, 2019; Revised January 16, 2020; Accepted January 21, 2020) Abstract: This study represents a successful and simple method for printing and finishing polyester fabrics by adapting a new aminothiazole disperse dye and microwave technique. Microwave pretreatment of polyester fabrics was carried out under a variety of conditions in terms of the microwave power and time. Afterwards, the printed samples were fixed using both conventional techniques and microwave energy. The color strength expressed as K/S of the printed samples was evaluated in addition to CIELAB coordinates (L*, a*, and b*), which were also measured. Washing, rubbing, and light fastness properties were evaluated for samples prepared by both conventional and microwave fixation techniques. Scanning electron microscopy (SEM) was used to investigate the morphological characteristics of the treated printed samples. The biological activity of the synthesized dye against gram-positive bacteria and gram-negative bacteria was also evaluated. The obtained results clarified that the prints obtained using microwave treatment and new dyes have better color strength, stable brilliant color, good fastness properties, and highly durable antibacterial activity when compared to those of conventional techniques using thermofixation and steaming. Keywords: Microwave, Printing, Aminothiazole, Disperse dye, Polyester fabric
affect the printability of polyester fibers. However, reports on the effect of microwave irradiation on the printability of polyesters are scant. Montazer and Alibakhshi reported that microwave (MW) irradiation has no influence on the structure of direct dyes or cotton fabrics [10]. Therefore, the thermal energy produced by microwave irradiation can be used for the dyeing process. MW irradiation reduces the time of dyeing by increasing the rate of dyeing, which may increase the efficiency. Additionally, it was found that microwave heating is an alternative technique to conventional heating due to the fast, effective, and uniform heating of the former [10-13]. These properties were attributed to the fact that MW energy easily penetrates all of the particles of materials and heating takes place instantly and uniformly. Therefore, the use of microwave heating in the disperse dyeing of polyester fabrics promotes dye exhaustion and increases the dyeing rates. On the other hand, the d
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