One-pot fabrication of durable antibacterial cotton fabric coated with silver nanoparticles via carboxymethyl chitosan as a binder and stabilizer

• Published in: Carbohydrate polymers Vol. 204; pp. 42 - 49
• Main Authors: Xu, QingBo, Zheng, WeiShi, Duan, PanPan, Chen, JiaNing, Zhang, YanYan, Fu, FeiYa, Diao, HongYan, Liu, XiangDong
• Format: Journal Article
• Language: English
• Published: England Elsevier Ltd 15.01.2019
• Subjects: Antimicrobial cotton; Carboxymethyl chitosan; One-pot preparation; Silver nanoparticles; Antimicrobial cotton; Carboxymethyl chitosan; One-pot preparation; Silver nanoparticles
• ISSN: 0144-8617; 1879-1344
• DOI: 10.1016/j.carbpol.2018.09.089

•A simple, facial and time-saving of one-pot method was successfully prepared the durable antibacterial cotton fabric.•The modified cotton fabrics have good laundering durability.•The leachate solution obtain from modified cotton fabric has no toxicity for human skin. In this article, durable antimicrobial cotton fabric was prepared by a one-pot modification process using a colloidal solution of silver nanoparticles (Ag NPs) stabilized by carboxymethyl chitosan (CMC). Due to coordination bonds between the amine groups of CMC and the Ag NPs and the ester bonds present between the carboxyl groups of CMC and the hydroxyl groups of cellulose, the Ag NPs were tightly immobilized onto the cotton fiber surface. As a result, the Ag NPs that were adhered on the cotton fabrics have uniform dispersion and small size, ranging from 10 nm to 80 nm. This provides the cotton fabric with remarkable and durable antibacterial activity against both S. aureus and E. coli. After 50 laundering cycles, the bacterial reduction rate (BR) for the modified cotton fabric remained over 94%. This method is simple, and it is particularly suitable for the industrial finishing process.