润湿性可切换的表面  

Surface with Switchable Wettability

作　　者：刘朋博 王嘉骏[1] 冯连芳[1] 顾雪萍[1] 

机构地区：[1]浙江大学化学工程与生物工程学院,杭州310027

出　　处：《材料工程》2016年第12期118-126,共9页Journal of Materials Engineering

基　　金：国家自然科学基金资助项目(21276222);国家高技术研究发展计划(863计划)专项经费资助项目(2012AA040305);化学工程联合国家重点实验室开放课题资助项目(SKL-ChE-13D01)

摘　　要：超疏水性和超亲水性是表面润湿性的两个极端,受表面的形貌和化学组成的共同作用。通过施加外界刺激可以改变表面形貌和/或表面化学组成,实现表面润湿性在超疏水性和超亲水性之间的切换。本文综述了润湿性可切换表面的最新研究进展。概述了以光照、温度、pH值、溶剂、电势等作为外界刺激以及表面反离子切换实现表面润湿性在超疏水和超亲水之间切换的方法。介绍了由于非对称的润湿性而导致液体定向传递的现象。展望了可控润湿性表面发展趋势,通过调控表面微米-纳米多级粗糙结构和化学组成,可实现在各种基材表面实现超疏水和超亲水之间的切换。Superhydrophobicity and superhydrophilicity are extreme properties of solid surface governed by surface morphology and surface chemistry.Switching between superhydrophobicity and superhydrophilicity can be achieved by applying external stimuli and exchanging counterions due to the change in surface morphology and/or surface chemistry.This review mainly gives a concise overview of switchable wettability of surface.Through applying external stimuli such as light,temperature,pH value,solvent,electric potential and exchanging of counterions,the wettability of surface can switch between superhydrophobicity and superhydrophilicity.The material with asymmetric wettability exhibits some novel abilities such as directional liquid transport.Finally,the advances of surface with switchable wettability are prospected.By controlling the micro-nano structure and chemical composition,the switch between superhydrophobicity and superhydrophilicity can be realized on various surfaces.

关 键 词：超疏水性 超亲水性 可切换的润湿性 定向传递 

分 类 号：TQ317[化学工程—高聚物工业]