Disulfide bond reconstruction: A novel approach for grafting of thiolated chitosan onto wool

Date
2018-09-29
Authors
Zhang, Pan
Zhang, Nan
Wang, Qiang
Wang, Ping
Yuan, Jiugang
Shen, Jinsong
Journal Title
Journal ISSN
ISSN
0144-8617
Volume Title
Publisher
Elsevier
Peer reviewed
Yes
Abstract
Chitosan, a natural biopolymer, is used as a multifunctional agent for modification of wool either through chemical crosslinking or physical coating. For the first time, wool fabric has been modified with chitosan through disulfide bond breaking and reforming reactions. The chitosan was thiolated and then grafted onto the reduced wool fibers through disulfide bonds. In order to understand the mechanism of the grafting of thiolated chitosan onto wool, glutathione was used as a model compound for wool in the research. The structures of thiolated chitosan reacted with glutathione and wool fabrics grafted with thiolated chitosan were investigated by FTIR, 13CNMR, XPS, XRD, SEM. The dyeability, shrink-resistance and biocompatibility were also tested. The results suggested that glutathione reacted with thiolated chitosan and formed disulfide bond. The thiolated chitosan-grafted wool fabric had good shrink-resistance and dyeability. Hydrophilicity and antibacterial properties were also improved compared with untreated wool fabric. The results provide a novel approach for modification of wool through fiber-intrinsic groups like disulfide bonds.
Description
The file attached to this record is the author's final peer reviewed version. The Publisher's final version can be found by following the DOI link.
Keywords
Chitosan, Wool, Disulfide bond, Graft modification
Citation
Zhang, P., Zhang, N., Wang, Q., Wang, P.,Yuan, J., Shen, J. (2019) Disulfide bond reconstruction: A novel approach for grafting of thiolated chitosan onto wool. Carbohydrate Polymers, 203, pp.369-377.
Research Institute
Institute of Art and Design