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Phenolic Yellowing on Textiles
Manoj Kumar
B.Tech in textile Chemistry
SSM COLLEGE OF ENGINEERING
Salem, Tamilnadu, India
Email: manossm.kumar@gmail.com
B.Tech in textile Chemistry
SSM COLLEGE OF ENGINEERING
Salem, Tamilnadu, India
Email: manossm.kumar@gmail.com
Yellowing In General:
- The yellowing on textile is the main problem facing by the textile industries from long back.
- There are numerous factors are responsible for yellowing on textiles such as chemicals used on textiles during wet processing, fibers, atmospheric pollutants etc…
Phenolic Yellowing on Textiles
- The most common yellowing on textile is phenolic yellowing also known as storage yellowing, ware house yellowing.
- The yellow stain occurs mainly on crease, folds can appear on white or light coloured fabric stored in certain plastic bags for sale.
- The phenolic antioxidants present in the packing material along with exposure to oxides of nitrogen & alkali ph of the fabric or garment are responsible for yellowing.
- The antioxidents includes para-phenylenediamine(PPD) & Butylated hydroxytoulene(BHT),The oxides of nitrogen is the by product of combustion of petrol diesel etc…
- The phenolic anti-oxidants present on the packing materials like plastic covers will migrate on textiles.
- When the textiles get exposure with oxides of nitrogen present in the atmosphere along with the core alkali present on the textiles after textile wet processing will causes Phenolic yellowing.
- Use BHT free Plastic bags for cover the Textiles
- Neutralize the textiles after alkali wet processing treatment using Acetic acid or core alkali Neutralizer.
- Keep the textile away from Oxides of nitrogen gases.
- Finish the textile goods using Anti-Phenolic yellowing Textile finishing agents.
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