Chitosan Applied in Dyeing Bath

Chitosan Applied in Dyeing Bath (Add together with dyes)

Chitosan: Bio-mordant added directly in dye bath for higher dyeing efficiency

Process stage: Add into dye bath together with dyes during dyeing.

Functions

Chitosan is protonated and positively charged under acidic dye bath condition. As a bio-mordant, it captures anionic dye molecules in liquor and strengthens dye adsorption on fibers, raising K/S color depth value.

It allows low-temperature dyeing to save steam energy, inhibits dye hydrolysis, reduces loose color, improves level dyeing, and lowers residual dye in wastewater to reduce chroma.

Note: For natural plant dyes, chitosan works as heavy-metal-free eco-mordant to replace alum, copper salts and other heavy metal mordants.

Dosage & Application Process

1. Chitosan stock solution: Dissolve in 1% acetic acid to prepare 10 g/L reserve liquid.

2. Dosage in dye bath: 0.2~0.6 g/L (per volume of dye liquor).

3. Liquor ratio: 1:10 ~1:30, pH controlled at 4.5~6.

4. Operation: Heat up to dyeing temperature, add chitosan solution and stir evenly, then feed dyes, hold for 30~60 min for regular dyeing.

Notes

pH is critical. Chitosan precipitates and loses efficacy under alkaline environment. Avoid ultra-high molecular weight product which leads to excessive viscosity and fabric defects.

Yudacentury As a supplier of chitosan application solutions with 24years experience.

Our main products: chitin, chitosan, Hydroxypropyl Chitosan, Hydrochloride Chitosan, Chitosan Lactate, Carboxymethyl Chitosan.

With origin: Chitosan Fresh North Atlantic Shrimp Shell/Crab Shell Origin

Chitosan Aspergillus Niger Origin

Chitosan Agaricus bisporus Origin mushroom

More details and solutions ,please contact us.