Application of a fibre-reactive chitosan derivative to cotton fabric as a zero-salt dyeing auxiliary |
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| Authors: | Sang-Hoon Lim Samuel H Hudson |
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| Affiliation: | College of Textiles, North Carolina State University, Raleigh, North Carolina 27695, USA. Email:;College of Textiles, North Carolina State University, Raleigh, North Carolina 27695, USA. Email: |
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| Abstract: | Cotton fabric has been treated with a fibre-reactive chitosan derivative containing quaternary ammonium groups, O -acrylamidomethyl- N -[(2-hydroxy-3-trimethylammonium)propyl]chitosan chloride (NMA-HTCC). Cotton treated with NMA-HTCC has been dyed with direct and reactive dyes without the addition of salt. The colour yield was higher than that on untreated cotton, despite the addition of a large amount salt in the latter case. After dyeing, cotton treated with NMA-HTCC gave better wash fastness than the untreated cotton. The light fastness was however inferior to that on untreated cotton. The antimicrobial activity of cotton treated with NMA-HTCC against Staphylococcus aureus was considerably lower after dyeing, probably due to the antimicrobial effect of the cationic group on NMA-HTCC being blocked by its combination with the anionic dye. |
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