Scraping-Induced Superhydrophobicity on Polymer Surfaces: Experiment and Lattice Boltzmann Simulation
首发时间:2012-12-28
Abstract:We report a scraping-induced surface modification method to produce superhydrophobicity. The proposed method allows easy large-scale manufacturing of surface superhydrophobicity. Experimental contact angles on seven polymer surfaces were reported. The largest water contact angle was found to be 160.0 on manufactured rough PTFE surfaces. Numerical simulations by means of a lattice Boltzmann method were also performed to examine the effect of trapped air on the wettability or superhydrophobicity. We found that contact angle increases with the amount of trapped air at the solid-liquid interface, in general agreement with experimental results.
keywords: Physical Chemistry Superhydrophobicity Surface roughness Lattice Boltzmann Model
点击查看论文中文信息
摩擦制备聚合物超疏水表面及其晶格波尔兹曼模拟
摘要:本文利用一种简便而行之有效的机械摩擦法在多种聚合物表面诱导了大面积无规粗糙结构,由此可以控制聚合物表面浸润性的变化。机械摩擦不仅可以增强疏水性聚合物的疏水性,而且可以增强亲水性聚合物的亲水性。这种方法简单高效,操作方便,对聚合物材料的生产工艺和材料本身并无特殊要求,在常温下即可改变聚合物材料表面的浸润性。本研究同时利用平均场晶格波尔兹曼的方法对疏水表面的静态接触角进行了数学模拟,将表征固体-流体相互作用的多相模型引入到疏水表面研究中。实验数据和理论计算都表明接触角随表面粗糙度增加而增大。
论文图表:
引用
No.****
同行评议
共计0人参与
勘误表
摩擦制备聚合物超疏水表面及其晶格波尔兹曼模拟
评论
全部评论0/1000