Effect of Different Solvent on Tegeran (Cudrania javanensis) Wood Extract Dyeing Quality on Silk Batik

Tegeran (Cudrania javanensis) wood has been used as natural yellow dyes source
for batik that traditionally obtained from extraction process by boiling in some amount of
water. Tegeran dyes gives deep yellow color in cotton and silk batik with good fastness
properties, but rarely reported about its result quality using different type of solvents in
extracting process. Therefore, we conducted this research to find out how much different
type of solvent in extracting process giving influence on dyeing result quality of silk batik. In
this research has been carried out Tegeran wood extraction using four different solvent such
as alcohol 70%, aquadest, acid/acetic acid solution pH 2.5 and alkaline/sodium hydroxide
solution pH 12. The extract then used to dye batiked silk fabric. Tegeran wood extract
coloring result in silk batik giving range colour from yellow to deep cream. The color
strength values obtained were batik fabric dyed with Tegeran wood extract from alcohol
70% solvent 0.49, acid 0.57, aquadest 1.15, and alkaline 1.78. From color difference testing
results, we obtain value of batik fabric colored with tegeran wood extract from alcohol 70 %
L*=79.34, a*=6.37, b*=53.51; aquadest L*=87.91, a*=-0.69, b*=34.53; alkaline L*=76.06, a*=9.41,
b*=14.76; and acid L*=77.70, a*=8.21, b*=36.72. The best solvent is sodium hydroxide pH 12
that brought deepest brown color and alcohol 70% that brought the lowest color
degradation