本基金申请旨在通过正空间（原子力显微镜和光学显微镜等）和倒易空间（同步辐射掠入射X-光散射）相结合的原位实验手段，以强和弱相分离的混合物及嵌段共聚物作为模型体系，在线跟踪复杂高分子液体薄膜中、后期阶段的结构演变动力学过程，探讨在不同基底、组成和膜厚条件下的（微）相分离和去润湿的耦合行为；阐明不同机理去润湿【不稳机理和成核机理】与（微）相分离的耦合机制；揭示不同耦合机制下的滑移效应和薄膜粘弹性质对结构动力学及其标度行为的影响规律。同时根据实验体系构建模拟模型，利用动态蒙特卡洛分别与布朗动力学和自洽场相结合的方法，一方面探讨（微）相分离与去润湿耦合动力学和热力学的机制，另一方面微观尺度阐明复杂动力学过程的前期和早期阶段。综合实验和模拟，全面评估从前期、早期到中后期的动力学演变规律，提出具有一定普适性的模型描述复杂高分子液体薄膜稳定性及其结构形成动力学规律，为薄膜结构调控提供科学依据和理论指导。

The thin polymer films have a high application potential on the protecting coating, lithography, the choosing filter film, photoelectricity apparatus, data storage and microreactor so on. However, the stability of the thin polymer film is an important factor to influence its application. Thus, in recent years many scientists have widely investigated the dewetting behavior of the thin polymer film. Besides, the thin polymer film is also an ideal mode system on the study of the low dimensional physics because the vapor pressure of the polymer is low and the mobility of the polymer is slow. Thus, this is helpful for the development of the low dimensional condensed physics. In a word, the study of the dewetting behavior of the thin polymer film has an important significance on the fundamental study and the technological applications.However, many applied polymer films is not single phase but mutiphase and multicomponent system. Till now the instability and dynamics of the complex polymer film is still open. Here, this project aims at the investigation of dynamics and instability of complex polymer film. We choose two kinds of model systems, blend and block-copolymer film with weak and strong segregation. Firstly, we monitor evolution of the structures by in situ atomic force microscopy (AFM), in situ X-ray photoelectron spectra (XPS), grazing incidence small-angle X-ray scattering (GISAXS) and so on. Secondly, we investigate the interplay between phase separation and dewetting; effect of slippage and viscoelasticity on the moving front of dewetting and rim instabilty; compared with melting film, understanding solvent induced dewetting mechanism. In addtion, we will establish kinetic Monte Carlo, combining Brwonian Dynamics simulationa and Self-consistent field respectively. According to theory and simulation, we explore early stage and the mechanism of the coupling behavior. Finally we will try to suggest a universal model to discribe their interplay behavior, which will be helpful for control of morphology and structure of complex polymer film.