Light Fastness Property

The light fastness of soybean fiber was tested under outdoor condition for two months. After the test, the color of soybean fiber fades a little, the strength decreases 11% and  no mold fungus appears. Furthermore, the strength of soybean fiber decreases only 9.8% under the ultraviolet irradiation for 120 hours. The test results indicate that the soybean fiber has good light fastness property and good resistance to ultraviolet radiation, which is better than cotton, viscose and silk.