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- Title
Enhancing dye adsorption of wool by controlled and facile surface modification using sodium bisulphite.
- Authors
Jiang, Zhe; Zhang, Yiyi; Zhang, Nan; Wang, Qiang; Wang, Ping; Yu, Yuanyuan; Zhou, Man
- Abstract
Wool is a natural biopolymer with special properties, including warmth retention and skin‐friendliness. However, its application in the textile industry is limited by the scale layer that covers its surface, which prevents the efficient diffusion of dye into the interior of its fibres, and increases wool's susceptibility to shrinkage during washing. Here, dissolution with sodium bisulphite is used for wool surface modification. The properties of surface dissolved wool are comprehensively characterised, including strength loss, shrinkage rate and dyeability. The three‐dimensional images indicated that scale layer was etched. Coupled with Fourier‐transform infrared (FTIR) spectra, the test results of strength loss and shrinkage rate indicated that surface dissolution degree can be controlled by time and temperature, and that the process does not break the fibre's main body structure. Dyeability properties, including dye absorption rate, deepness and uniformity at a lower temperature were enhanced, indicating amenability to industrial production. Our findings highlight a novel, efficient method of modifying protein fibre surface for enhancing properties with potential for large‐scale application.
- Subjects
WOOL; SODIUM; NATURAL dyes &; dyeing; THREE-dimensional imaging; TEMPERATURE control; SURFACE properties; TEXTILE industry
- Publication
Coloration Technology, 2022, Vol 138, Issue 1, p82
- ISSN
1472-3581
- Publication type
Article
- DOI
10.1111/cote.12573