Abstract:

In order to study the relationship between light stabilizer’s structure and the light fastness of Disperse Red TR-16 on cotton, 12 light stabilizers of four main categories were selected to treat the cotton fabric which had been dyed with Disperse Red TR-16. The light fastness of the samples was compared. The UV absorption spectra of the light stabilizers and Disperse Red TR-16 as well as the UV transmittance of the dyed cotton fabric before and after illumination were measured. The results showed that good light stabilizer has the following characteristics: maximum UV absorption covering the UV absorption band of Disperse Red TR-16, parallel surface formed with the fibre, well covering the dye molecules, strong intermolecular bonding with the dye molecules, improving the distribution stability of the UV absorber.