Alterable Superhydrophobic-Superhydrophilic Wettability of Fabric Substrates Decorated with Ion-TiO2 Coating via Ultraviolet Radiation

作者：Yin, Yunjie; Guo, Ning; Wang, Chaoxia^*; Rao, Qingqing

来源：Industrial & Engineering Chemistry Research, 2014, 53(37): 14322-14328.

DOI：10.1021/ie502338y

• SOL-GEL SYNTHESIS
• HYBRID SOL
• TIO2
• SURFACE
• TITANIUM
• AEROGELS

To prepare a functional fiber surface with alterable superhydrophobic-superhydrophilic wettability on fabrics, a TiO2 hybrid sol was synthesized with tetrabutyl titanate and a fluoride silane coupling agent, 1H,1H,2H,2H-perfluorooctyltrimethoxysilane, via sol-gel technology. Within irradiation under UV light, the decay of the contact angle from superhydrophobicity to superhydrophilicity on the irradiated front fabric treated with the F-TiO2 hybrid sol was the fastest, and the contact angle on the irradiated reverse cotton fabric hardly changed. During this process, the contact angles of cotton, polyester, and wool fabrics kept within a tiny change (4 degrees) with different doping ratios, and the UV irradiation had no effect on the reverse contact angles. During the storage process in the dark, the loss ratio of the front contact angle was decreased to 2096 from 40% as the storage temperature increased to 60 degrees C from 30 degrees C.

• 出版日期2014-9-17
• 单位江南大学