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Modified guar gum: An alternative source for printing of cotton fabric with reactive dye
Authors:Mohammad Khajeh Mehrizi  Mostafa Jokar  Tayebah Sadeghyan  Mohammad Erfan Azizi  Mohammad Reza Rahmani
Affiliation:1. Department of Textile Engineering, Yazd University, Yazd, Iran;2. Department of Textile Engineering, Amirkabir University of Technology, Tehran, Iran;3. Department of Industrial Engineering, Yazd University, Yazd, Iran;4. Department of Accounting, Yazd University, Yazd, Iran;5. Department of Industrial Engineering, University of Sistan and Baluchestan, Zahedan, Iran
Abstract:The alginate thickener is the thickener frequently used for reactive printing of textile. The thickener responds with reactive pigments and thus does not lead to the fabric composition becoming stiffer. In this study, we prepared oxidised natural guar gum with hydrogen peroxide, sodium hypochlorite and sodium hydroxide. All other polysaccharides comprise reactive hydroxyl units with a stronger reactivity that must be replaced if they are to be used in reactive printing. Guar derivatives were synthesised and verified using Fourier-transform infrared (FTIR) spectroscopy. Natural thickeners, synthetic guar gum derivatives, have been employed in textile printing technique. In comparison to other synthetic thickeners, modified environmental guar gum polymer has been shown to be an ecologically friendly and low-cost thickener. Cotton fabric printed with modified guar thickening with hydrogen peroxide has even stronger colour strength than fabric printed with sodium alginate thickener, which is highly favourable. Penetration properties, colour value, colour strength, colour fastness to washing, light and rubbing was compared with alginate thickener (readily available on the market). Guar gum thickeners showed enhanced features versus sodium alginate for reactive printing. Partially replaced guar gum is an appropriate option due to the colour and physical properties.
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