Abstract

This work was focused on the development of superhydrophobic and UV protective cotton fabric by simple approach. Cotton fabric was coated with TiO₂ particles by one step hydrothermal reaction. TiO₂ coated fabric was subsequent treated with Trimethoxy(octadecyl)silane (OTMS). The effect of hydrothermal reaction time on synthesis of nanoparticles was studied. The results showed TiO₂ particles were uniformly distributed on the fiber surface with a high coating density. The scanning electron microscopy (SEM), EDS analysis and Raman spectroscopy techniques were used to investigate the surface structure of coated fabrics. The analysis of superhydrophobicity, UV protection and oil/water separation was performed. The water contact angle was increased to 146°, 153° and 159° for deposition duration of 4, 8 and 12 h, respectively. The robust superhydrophobic fabric exhibited good stability against physical and chemical insults including mechanical abrasion test, washing durability, and exposures to extreme aqueous conditions (e.g. acidic and alkaline). Further, the superhydrophobic cotton fabrics with special wettability showed great potentials for oil/water separation under various conditions (e.g. floating oil layer or underwater oil droplet or even oil/water mixtures). In addition, this facile approach can be widely used to construct multifunctional textiles with excellent self-cleaning, UV protection, and oil/water separation properties.

摘要

这项工作的重点是通过简单的方法开发超疏水和紫外线防护棉织物。棉织物通过一步水热反应涂覆有TiO ₂颗粒。随后用三甲氧基(十八烷基)硅烷(OTMS)处理TiO ₂涂层织物。研究了水热反应时间对纳米颗粒合成的影响。结果表明 TiO ₂颗粒均匀分布在纤维表面，涂层密度高。使用扫描电子显微镜 (SEM)、EDS 分析和拉曼光谱技术研究涂层织物的表面结构。进行了超疏水性、紫外线防护和油/水分离的分析。对于 4、8 和 12 小时的沉积持续时间，水接触角分别增加到 146°、153° 和 159°。坚固的超疏水织物对物理和化学损伤表现出良好的稳定性，包括机械磨损测试、洗涤耐久性和暴露于极端水性条件（例如酸性和碱性）。此外，具有特殊润湿性的超疏水棉织物在各种条件下（例如 浮油层或水下油滴甚至油/水混合物）。此外，这种简便的方法可广泛用于构建具有优异自清洁、紫外线防护和油水分离性能的多功能纺织品。