The Effect of Extracted Color from Mixed Betel Nut, Piper Betel and Red Lime for Dyeing Rayon Fabric
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Abstract
This research aims to investigate factors affecting rayon fabric dying using betel nut extract mixed with piper betel and red lime. The ratios of betel nut, piper betel and red lime were tested at 4:3:1, 8:6:1 and 10:8:1. The ratio of mixtures to water was at 1:5 wt./vol. The color water at optimum condition was applied with 3 fixing agents at different concentrations. They were (1) NaCl 10%, 20% and 30% wt./vol, (2) AlK(SO4)2 0.3%, 1.6% and 3.3% wt/vol, and, (3) a mixture of NaCl and AlK(SO4)2 at 11:1, 5:1 and 1:1 with concentration of 10 wt./vol. The dyeing time was studied at 20, 40 and 60 minutes. The results found that color extracts were at pH 9.98 - 12.12. At 70°C for dyeing and all dyed rayon fabrics gave the same shade of color (a yellowish-brown). At ratio of 10:8:1, the highest a* (redness) and b* (yellowness) values were obtained at 9.53 and 18.65, respectively. For the color of the rayon fabric after dyeing with NaCl and AlK(SO)4)2 of 5:1, the lowest L* with highest a* and b* values was observed. The DE* and C* values were also the highest. The optimum dyeing time with color from optimum condition was 20 minutes. Additionally, the color strength in sunlight after 20 days was at moderate level.
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