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- 저자 : I. O. Barcellos (검색결과 1 건)
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A. M. Bueno,M. J. Gonçalves,I. O. Barcellos,C. K. Souza,L. F. Carvalho,R. B. M. Ibsch,B. R. Warmling,S. L. Bertoli 한국섬유공학회 2020 Fibers and polymers Vol.21 No.1
Due to the large amount of toxic effluents generated by the textile industry using most of synthetic dyes, naturaldyes are increasingly gaining prominence, in keeping with the global trend toward prioritizing the use of cleanertechnologies. However, the application of natural dyes is still restricted, mainly due to their instability in solution and poorfixation onto textile substrates. Thus, research is required to improve the performance of these dyes in order to obtainproducts with the characteristics desired by the industry. In this study, the potential of natural annatto dye in the dyeing ofpolyester (PES) fiber was analyzed and the color and stability parameters in solution were evaluated through twoexperiments. Initially, the stability of the natural annatto dye in solution was determined under different conditions oftemperature, pH, and dye concentration and the application of this dye in conventional PES fiber dyeing was investigated. Subsequently, the influence of the use of a carrier in the dyeing of PES fiber was evaluated. The results indicated that thevariables with the greatest effect on the degradation of the dye are temperature and pH. The natural annatto dye showed goodinteraction with the PES fiber in the conventional dyeing process, presenting good results of color yield and levels of fastness. In the dyeing processes conducted with and without a carrier, the dyeing performed in the latter provided better results, withthe advantage of allowing the application of lower temperatures.
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