In Situ Coloring and Antibacterial Finishing of Silk Fabrics Through Fenton-Induced Deposition of Caffeic Acid and Silver Nanoparticles 


Vol. 24,  No. 4, pp. 1265-1274, Apr.  2023
10.1007/s12221-023-00143-6


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  Abstract

Due to the weak interaction between dye molecule and silk fi ber, traditional acid dyeing of silk fabrics has some shortcomings such as high energy consumption and poor dyeing fastness. In the present work, in situ coloring of silk fabric was carried out via graft polymerization of caff eic acid (CA) by using a Fenton system consisting of FeCl 2 and H 2 O 2 . Subsequently, silver ions were reduced to silver nanoparticles (AgNPs) by poly(caff eic acid) (PCA) grafted in silk fi broin and deposited on the fi ber surfaces, aiming at improving the antibacterial property of silk fabric. The results indicate that it is feasible to achieve in situ dyeing of silk fabrics under low temperature condition through graft polymerization of CA, and the color depth (K/S value) increases to 4.8. Meanwhile, the iron ions might further form coordination bonds with PCA and tyrosine residues in silk fi bers, which can improve the washable resistance and wet rubbing fastness of the dyed fabrics, reaching the grade of 45. In addition, PAC grafted on silk fi bers exhibits high reductivity, which can reduce silver ions and guide the AgNP deposition on the surface of silk fi bers. This allows silk fabrics to achieve effi cient and durable antibacterial eff ects, and the antibacterial rate remains above 98% even after cyclic washings. The present work provides a novel approach for in situ coloring and functionalization of silk fabrics without additional synthetic dyes or antibacterial agents.

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  Cite this article

[IEEE Style]

Y. Yuan, X. Bao, L. Wu, P. Wang, Y. Yu, Q. Wang, "In Situ Coloring and Antibacterial Finishing of Silk Fabrics Through Fenton-Induced Deposition of Caffeic Acid and Silver Nanoparticles," Fibers and Polymers, vol. 24, no. 4, pp. 1265-1274, 2023. DOI: 10.1007/s12221-023-00143-6.

[ACM Style]

Yun Yuan, Xueming Bao, Leilei Wu, Ping Wang, Yuanyuan Yu, and Qiang Wang. 2023. In Situ Coloring and Antibacterial Finishing of Silk Fabrics Through Fenton-Induced Deposition of Caffeic Acid and Silver Nanoparticles. Fibers and Polymers, 24, 4, (2023), 1265-1274. DOI: 10.1007/s12221-023-00143-6.

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