Polystyrene sphere monolayer arrays are widely used in the field of optics and mainly obtained by adding al-cohol solvent into the colloidal solution of commercial polystyrene sphere to form assembly liquid,and then dropping the assembly liquid onto the interface of water film and air for self-assembly.The cost is high and the use of alcohol solvent is not clear.To solve these problems,polystyrene microspheres are prepared by chemical method,and the influence of different alcohol solvents on their interfacial self-assembly properties is explored in this paper.It is found that ethanol is the best solvent for self-assembly,and it can form a complete and nearly close-packed monolayer of polystyrene spheres,isopropanol has the similar effect,but it takes a longer time,and pure water or long carbon chain alcohol(n-butanol)can hardly self-assemble.It can be seen that self-assembly depends on not only the slight difference in the properties between the assembly liquid and the water film,but also their infiltration that can form convection.Therefore,if the assembly liquid contains ethanol,it is the best,because ethanol has a lower density,better volatility and compatibility.In addition,the better the uniformity of the size of the polystyrene spheres,the better the quality of the monolayer of polystyrene spheres.This work can provide a reference for the preparation of polystyrene spheres in laboratory and the study of their self-assembly properties.
关键词
聚苯乙烯微球的制备/界面自组装/聚苯乙烯球单层阵列
Key words
preparation of polystyrene microspheres/interfacial self-assembly/polystyrene sphere monolayer arrays
维普
万方数据