Gallic acid functionalized polylysine for endowing cotton fiber with antibacterial, antioxidant, and drug delivery properties

Wen Zhang，Qing-Min Zeng, Ren-Cheng Tang*

College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China. Jiangsu Engineering Research Center of Textile Dyeing and Printing for Energy Conservation, Discharge Reduction and Cleaner Production (ERC). China National Textile and Apparel Council Key Laboratory of Natural Dyes.Soochow University, Suzhou 215123, China.

In recent years, the serious influence of infectious diseases on public health and economy development has raised global awareness of the importance of medical textiles for preventing and curing injuries and diseases. The application of biomass molecules is a feasible and sustainable approach to design multipurpose medical materials. In this work, a novel cotton fiber with antibacterial, antioxidant, and drug delivery properties was prepared using gallic acid functionalized polylysine (GA-PL). GA-PL was synthesized by immobilizing GA onto PL using the carbodiimide coupling method. The content of GA immobilized onto PL was 117.9 mg/g. The as-prepared GA-PL was grafted onto oxidized cotton by means of the Schiff base reaction between the amino groups of GA-PL and the aldehyde groups of oxidized cotton. The content of GA-PL grafted onto cotton fiber was 205.1 mg/g. GA-PL grafted cotton fiber exhibited not only durable antibacterial and antioxidant activities but also good drug loading and releasing properties for acetylsalicylic acid. This work presents a novel, cleaner, and sustainable approach to prepare medical cotton fibers with bioactive and drug delivery properties.

Volume 216, 1 September 2022, Pages 65-74

https://doi.org/10.1016/j.ijbiomac.2022.06.186