摘要
一品红叶面具有优异的超疏水性能,研究发现其表面分布有大量微米级的"人耳"状凹槽和纳米级的"星型"微凸起,这种微纳米级的复合阶层结构能使其表面吸附一层空气膜,液滴与其表面的接触是液、固、气的复合接触。此外,植物的表面有低表面能的蜡状物,微纳米级的复合阶层结构及其表面的低表面能物质的协同作用使其表面显示出优异的超疏水性能,该研究有望为仿生超疏水材料的制备提供有益的启发。
The leaf surface of poinsettia exhibited perfect superhydrophobicity with a water contact angle of 150°.Investigation showed there were many ear-like grooves with micrometer and star-like convexes with nanometer on the leaf surface,this kind of micro and nanometer composite hierarchical structures absorbed air on the surface,consequently,the contact of water droplets with leaf surface was a composite contact between liquid-solid-air.Additionally,there existed low surface energy material of wax on the leaf surface.The co-exist effect of composite hierarchical structures and low surface energy on the surface of leaf leaded to its superhydrophobicity.This research may provide valuable inspiration in the biomimetic fabrication of superhydrophobic materials.
出处
《化工新型材料》
CAS
CSCD
北大核心
2012年第11期46-47,共2页
New Chemical Materials
基金
甘肃省高校河西走廊特色资源利用省级重点实验室项目(XZ1010)
关键词
一品红
超疏水
滚动角
复合阶层结构
Cassie’s理论
poinsettia
superhydrophobicity
glide angle
composite hierarchical structure
Cassie＇s theory
