The performances of carboxymethyl chitosan in wash-off reactive dyeings

Carboxymethyl chitosan (NOCC) with different molecular weight (Mw) and degree of substitution (DS) was synthesized under heterogeneous conditions. The synthesized NOCC was employed as builders in removing unfixed dyes from reactive cotton dyeings. The factors influencing wash-off effectiveness, incl...

Full description

Saved in:
Bibliographic Details
Published in:Carbohydrate polymers 2009-01, Vol.75 (2), p.203-207
Main Authors: Xue, Xuting, Li, Ling, He, Jinxin
Format: Article
Language:English
Subjects:
Applied sciences
Carboxymethyl chitosan
Exact sciences and technology
Fibers and threads
Forms of application and semi-finished materials
Natural polymers
Physicochemistry of polymers
Polymer industry, paints, wood
Reactive dyeings
Starch and polysaccharides
Technology of polymers
Unfixed dyes
Wash-off
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Carboxymethyl chitosan (NOCC) with different molecular weight (Mw) and degree of substitution (DS) was synthesized under heterogeneous conditions. The synthesized NOCC was employed as builders in removing unfixed dyes from reactive cotton dyeings. The factors influencing wash-off effectiveness, including the achievable Mw and DS of NOCC and the initial pH value of washing liquor, were investigated. NOCC with the Mw of 25.0 kDa and the DS of approximately 1.0 has achieved the best wash-off effectiveness at the same wash-off conditions. The wash-off effectiveness of NOCC increases with the increase of pH values of washing liquor. The wash-off mechanism was also discussed by spectroscopic study. This study concludes that NOCC is a potential candidate for removing the unfixed reactive dyes on cotton fabrics.
ISSN:0144-8617
1879-1344
DOI:10.1016/j.carbpol.2008.05.012