It is mostly used for cotton desizing, rarely used alone, and needs to be used in combination with other desizing methods. Such as alkaline acid desizing or enzyme-acid desizing.
Desizing principle:
Dilute sulfuric acid has no decomposition effect on PVA and PA slurry under appropriate conditions, but it can gradually hydrolyze starch, convert it into water-soluble product, and finally be washed away by water.
Features:
- It is suitable for containing cotton cloth, which can remove mineral salts and heavy metal ions in a large amount and improve whiteness;
- There is certain damage to cotton. When handling, T and C should not be severe;
- The starch hydrolysis is not sufficient, and the desizing rate is not high.