A common problem with light and white shades in textiles is yellowing of textile in use or during storage. Gradual yellowing of textile in use is related to the accumulation and oxidation of the residual soil mainly sebum and nitrogenous soil. Unsaturated compounds in sebum, unsaturated fatty acids and their esters form dark coloured oxidation products. Some of the yellowing in cellulose based textiles is also due to oxidation of cellulose.

This yellowing phenomenon has been discussed under the following classes as they are more frequent in their occurrences:

• Yellowing during wear
• Yellowing of Wool
• Yellowing on storage

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About the Authors

The authors; Dr. Ruma Chakrabarti and S. Kavitha are associated with Kumaraguru College of Technology, Coimbatore and A.Vignesh with Hohenstein India Ltd.