缠结高分子多层薄膜结构形成动力学过程的研究

项目名称： 缠结高分子多层薄膜结构形成动力学过程的研究

项目编号： No.51503048

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 一般工业技术

项目作者： 徐林

作者单位： 贵州师范学院

项目金额： 20万元

中文摘要： 高分子多层功能薄膜被广泛地应用在太阳能电池、传感器及生物材料表面涂层等不同的领域。高分子薄膜的稳定性是影响其技术应用的重要因素。目前人们对高分子多层薄膜不稳定机理和结构形成动力学过程的认识，远不及对高分子单层薄膜体系的理解。在本项目中，我们旨在利用原位跟踪实验手段和数值理论分析，以缠结高分子双层薄膜为体系来集中探讨低维高分子链缠结效应对高分子多层薄膜不稳定机理和结构形成动力学过程的影响。首先，明晰在液体基底上高分子缠结效应引起的链滑移效应的产生机理。其次，阐明在液体基底上链滑移效应对三相接触线移动过程中能量耗散方式的影响。此外，洞察缠结高分子的粘弹性对不同界面不稳定模式之间耦合关系的影响。最终，揭示高分子多层薄膜不同表面形貌形成的物理本质，并为薄膜结构的精确调控提供理论依据和科学指导。

中文关键词： 高分子材料的表面；高分子薄膜；去润湿；多层膜；滑移效应

英文摘要： Multilayer functional polymer films have been extensively applied, such as solar cell, sensor, and the surface coating of biological materials and so on. The stability of thin polymer films is a key factor determining its technological applications. Compared to single layer polymer film, the instability mechanism of multilayer polymer film and its kinetic process of structure formation are still unclear. In this proposal, we will investigate the influence of polymer chain entanglement on the instability mechanism and the kinetic process of structure formation of thin polymer bilayer film by use of in-situ experimental methods and numerical analysis. Firstly, the mechanism of slippage effect of polymer entanglement chains on the liquid substrates will be disclosed. Secondly, the pathway of the energy dissipation in the moving process of the three-phase contact line on the liquid substrates will be clarified. In addition, we will get an insight into the influence of the viscoelastic property of the entangled polymer on the coupling relation of different interfacial instability modes. Finally, the physical essence of different surface morphologies and structures formation via the above research will be revealed. We hope it can provide a theoretical basis and scientific guidance for precisely controlling the film morphologies and structures.

英文关键词： surface of polymer material;thin polymer film;dewetting;multilayer films;slippage effect