基于分形理论成膜过程非线性动力学研究

如何控制相转化成膜条件得到所需要的膜结构与性能，是分离膜基础研究中要解决的关键科学问题。现有基于稳态、线性理论模型不能对膜形成过程进行准确描述，因而还不能进行膜结构的精确设计和调控。建立准确的非线性成膜理论模型，成为实现基于理论方法进行膜结构设计与调控的关键。本项目研究一种新型基于分形理论膜结构设计与调控新方法。从微观上揭示相转化成膜过程非线性成膜机理的本质特征，建立原位在线检测湿法成膜过程动力学研究新方法，构建基于自相似的分形成膜理论动力学新模型。从宏观上探索成膜过程动力学参数与膜结构、性能之间的定量化数学模型。建立成膜动力学参数/微观膜结构/分离纯化性能之间相互联系的桥梁，为分离膜结构设计提供理论基础。

In order to get excellent membrane structure and performance, the key is how to control membrane preparation conditions during phase inversion. Up to now, the linear model based on steady-state hypothesis can't exactly describe the process of membrane formation, therefore, it is difficult to design the membrane structure and performance. The key how to control membrane structure is to establish a novel nonlinear model of membrane formation. The goal of this project is to explore a novel technology of controlling membrane structure and performance based on fractal theory. On the hand, from the microscopic, the nature of nonlinear mechanism during membrane formation will be revealed. A novel technology will be set up to measure kinetics of membrane formation in situ, and a new model will also be explored based on fractal theory. On the other hand, from the macroscopic, the new model describing the relationship among kinetics parameters, membrane structure and performance, will be studied. The results of this project will provide a novel technology for membrane design based on theory.