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What Colors Does Phenolic Yellowing Affect?

Views: 1000     Author: Site Editor     Publish Time: 2022-03-09      Origin: Site

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Light-colored textiles, especially white textiles, will experience yellowing on the surface (also known as "yellowing") during storage, which is more common in plastic packaging-based storage. There are many reasons for the yellowing of textiles. The yellowing that occurs after packaging is called "phenolic yellowing".

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During the process of packaging, transportation or storage of textiles, the packaging materials contain phenolic antioxidant BHF (di-tert-butyl-p-cresol, function: delay the degradation of plastic substances) and react with nitrogen oxides (NOX) in the air to form DTNP (2,6-di-tert-butyl-p-nitrophenol) This substance. DTNP is prone to sublimation and migrates to textiles. Under alkaline conditions, DTNP is converted into a yellow anionic phenate, resulting in yellowing of textiles.

What Colors Does Phenolic Yellowing Affect?

The lighter the color, the greater the chance of phenolic yellowing, especially bleached colors.

Which fabrics are affected by phenolic yellowing?

Phenolic yellowing affects all fabrics, such as cotton, chemical fibers, etc., especially for nylon. Light-colored fabrics of chemical fiber are more sensitive to phenolic yellowing than cotton fabrics. High-end clothing such as nylon swimsuits must be finished with anti-phenolic yellowing to improve the overall quality of the clothing and prolong its service life.


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