1. PAMUK LİFLERİNİN KİTOSAN İLE YÜZEY MODİFİKASYONU SONRASI POLİELEKTROLİT POLİ (AKRİLİK ASİDİN SODYUM TUZU) VARLIĞINDA REAKTİF BOYANMASI.
- Author
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TOPRAK CAVDUR, Tuba and ANIS, Pervin
- Subjects
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REACTIVE dyes , *NATURAL dyes & dyeing , *ACRYLIC acid , *DYES & dyeing , *SALT , *SODIUM salts - Abstract
Reactive dyes are the most widely used dyes in dyeing cotton. The high amount of electrolyte used for reactive dyeing of cotton fabrics inevitably poses environmental threats. Chitosan is used for different purposes in many areas in textiles due to its superior properties. In this study, the use of synthetic polyelectrolyte poly(sodium salt of acrylic acid) instead of inorganic electrolyte sodium chloride in reactive dyeing and the effects of chitosan on the reactive dyeing behavior of fabric were investigated. In addition, the washing fastness and ultraviolet protection factors of the fabrics were also observed. Treatment with chitosan before dyeing and the use of sodium chloride in dyeing increased the color depths compared to conventional dyeings, and this increase continued with the rise in chitosan concentration. Such that, values similar to the color strength of 3% conventional dyeing were obtained from the dyeing at 2% concentration following the application of chitosan at 8% concentration. The effect of the sodium chloride concentration increase on the color depth was observed more prominently than the polyelectrolyte. It has been understood that the working principle of the poly (acrylic acid sodium salt) in the reactive dyeing of cotton is relatively complex due to its non-ionizability, temperature-concentration-pH sensitivity and composing hydrophobic dye combinations. In addition, it was thought that different salt sensitivities of dyes might have created a difference in the effect of electrolytes. While the washing fastness of the chitosan-applied and dyed samples was good-excellent, it was observed that the crosslinking used in the chitosan application increased these values by 0.5 points. It has been observed that dyes were more effective than chitosan in increasing the ultraviolet protection factor. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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