Tannic interfacial linkage within ZnO-loaded fabrics for durable UV-blocking applications

Xi Wang, Xuantong Sun, Xinyi Guan, Yuqi Wang, Xiaogang Chen, Xuqing Liu

Research output: Contribution to journalArticlepeer-review

Abstract

To defend against the impact of ultraviolet (UV) irradiation from daily life and even changes in climate and stratospheric ozone, wearing UV-protective clothing is a simple and effective approach to reduce risks to human health from excessive UV exposure. However, normal clothes with traditional dye or additional modifications have limited UV-blocking activity and low washing fastness, bringing huge pressure on the environment. Herein, we applied a bio-interfacial material, tannic acid, to enhance the π interaction for better reusability of the nanostructured zinc oxide (ZnO) modified highly-improved-UV-protective natural textiles, which ultraviolet protection factor (UPF) maintained 309 despite 50 washing cycles. Moreover, the UV-protective properties of cotton-based or wool-based samples have both been significantly enhanced to UPF 500, which increased up to 4200 % compared to the previous metal salt ultraviolet screening agent method. Additionally, the endowed UV-protective characteristic contributed to tensile mechanical properties of modified wool textiles even after 120-hour UV irradiation. This biomass-inspired interface facilitated in-situ synthesis method suggested a promising strategy to take full advantage of the inner and outer walls of natural hollow fibre substrates to deposit active materials for advanced protective textiles.
Original languageEnglish
JournalApplied Surface Science
Publication statusAccepted/In press - 13 Aug 2021

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