Investigation of relationship between transport phenomena and spatial structure of nanoparticles in nanoparticles/polymer composite thin films

为了设计和优化纳米粒子/聚合物复合薄膜的镀膜工艺及其制备工艺，观察了薄膜中的溶剂挥发和薄膜在热退火过程中的脱湿动力学，并研究了这些现象与薄膜中纳米粒子空间结构的关系。纳米颗粒的存在对膜中有机溶剂的挥发速率有很大的影响。通过添加分离到薄膜表面的纳米颗粒来抑制膜的去湿。布朗动力学模拟表明，纳米粒子在溶剂中的分散状态取决于溶剂与有机分子的结合来修饰纳米粒子的表面。

For the design and optimization of coating process of nanoparticles/polymer composite thin films and their devise manufacturing, solvent evaporation from the films and dewetting dynamics of the films during thermal annealing were observed, and the relationship between these phenomena and the spatial structure of nanoparticles in the films was investigated. The evaporation rate of organic solvent from the film was strongly affected by the presence of nanopraticles. The dewetting was suppressed by adding nanoparticles which segregated to the film surface. Brownian dynamics simulations suggested that the dispersion state of nanoparticles in solvent depends on the combination of solvent and organic molecules to modify the nanoparticle surface.