Process of dyeing Chinese silk fabric using color of water betel nuts

Abstract

The aims of this research are to study the process of dyeing Chinese silk fabric using color of water betel nuts. The extracts were prepared from the mixture of water betel nuts with water, 1:5 by ratio for 40 minutes. Water betel nuts were comprised of the various mixtures of betel nut seed, red lime, and Piper betel Linn (4:3:0.5, 8:6:1, and 10:8:1 respectively). Then the appropriated water betel nut mixtures were mixed with fixing agents, including, the concentration of salt at 10%, 20%, and 30%, the concentration of alum at 0.3%, 1.6%, and 3.3%, and the combination of concentration of salt and alum at ratio of 3.3% : 0.3%, 1.6% : 0.3% and 0.3% : 0.3% respectively for 40 minute. The research also study the appropriate of dyeing time at different of type and fixing agent concentration, time of dyeing were varied at 20, 40 and 60 minute. The result shows that the best propotional of water betel nut miture is 4:3:0.5. Besides the lowest L* is 55.800, and a*, b*, DE* and C* values identified at 19.550, 22.230, 45.340 and 29.600 respectively. In addition, the study reveals that the best fixing agent is 30% concentration of salt which show lowest L* value at 61.950, and a*, b*, DE* and C* highest values of 16.225, 27.425, 41.830 and 30.590 respectively. The best dyeing time is at 60 minute as results of the lowest of L* value at 69.020, and a*, b*, DE* and C* highest values of 9.585, 21.060, 31.190 and 23.150 respectively.