Water repellency on a fluorine-containing polyurethane surface: toward understanding the surface self-cleaning effect.
Water repellency on a fluorine-containing polyurethane surface: toward understanding the surface self-cleaning effect.
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DOI：
10.1021/la803089y
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发表时间：
2009-01
期刊：
影响因子：
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通讯作者：
Wanling Wu;Qingzeng Zhu;Fengling Qing;C. Han
中科院分区：
文献类型：
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作者：
Wanling Wu;Qingzeng Zhu;Fengling Qing;C. Han
表面几何结构和低表面自由能是自清洁表面的两个最重要因素。在这项研究中，多种形式的几何微结构表面制备的聚氨酯浇铸和静电纺丝低表面能段和不。评价了低表面能对拒水性的影响。低表面能对静态润湿行为的贡献似乎比动态性能如滑动行为的改善更显著。提出了吸盘行为来解释水滴在高水接触角（>150 °）疏水表面上的钉扎状态。对静态接触角与动态滑动性能之间的关系有了更好的理解。
Surface geometrical microstructure and low surface free energy are the two most important factors for a self-cleaning surface. In this study, multiform geometrical microstructured surfaces were fabricated by casting and electrospinning polyurethanes with and without low surface energy segments. The effect of low surface energy on water repellency was evaluated. Low surface energy seems to make a more significant contribution to the static wetting behavior than do dynamic properties such as the improvement of sliding behavior. Sucking disk behavior was brought forward to explain the pinning state of a water droplet on hydrophobic surfaces with high water contact angles (>150 degrees ). A better understanding of the relationship between the static contact angle and the dynamic sliding property was provided.