Improving the Color Stability of Naturally Colored Silk by Cross-Linking the Sericin with Phytic Acid

Table 1

Effects of repeated washing on the color of cross-linked and uncross-lined NCS fabrics.

Washing cycles
	U	CL	U	CL	U	CL	U	CL	U	CL
1	-1.53	-1.01	-0.62	-0.93	-0.54	-2.33	3.22	3.05	1.74	2.70
5	-2.62	0.28	-2.04	-1.42	-4.01	-4.22	2.57	2.83	5.21	4.46
10	0.27	0.46	-2.19	-1.75	-6.09	-5.05	2.15	2.55	6.48	5.46
15	1.06	0.75	-2.65	-1.88	-9.64	-5.54	1.63	2.21	10.05	5.90
20	1.76	1.22	-3.46	-2.07	-15.92	-7.37	0.90	2.04	16.39	7.75

U: uncross-lined sample; CL: cross-linked sample; , , , and are the difference of , , , and value of the samples before and after washing. The , , , and value of control were 74.91, 7.81, 51.47, and 3.68, respectively.