Flow of Simple, Oligomeric and Polymeric Fluids in Well-Defined Straight Micropores: A Combined Molecular Simulation and Experimental Approach

该项目研究了简单的，低聚的， 聚合物流体内部是完全笔直和平行的， 超窄孔隙。 在这种情况下，流动不能 用宏观（连续）流体力学描述， 它的特征对分子 流体和固体表面的结构。 分子 模拟与最先进的 微孔和压降-流速表征 测量. 微孔介质由蚀刻片组成 直径大于等于60的云母。 的形状 微孔和孔表面暴露的原子团 通过SEM和原子力显微镜测定。 的 研究的目的是澄清禁闭的影响， 流动中的诱导不均匀性，固体/流体的作用 对动态流体结构和流动性的相互作用，以及 分子结构的重要性。 研究 结果对多孔岩石中石油流动的影响，磁性数据- 存储盘润滑、膜渗透性和 选择性和毛细管挤出过程中的熔体破裂。

The project examines the flow of simple, oligomeric and polymeric fluids inside perfectly straight and parallel, ultra-narrow pores. Under these conditions, flow cannot be described in terms of macroscopic (continuum) hydrodynamics, and its features are quite sensitive to the molecular structure of the fluid and of the solid surface. Molecular simulation is closely coordinated with state-of-the-art characterization of the micropores and pressure drop-flow rate measurements. The microporous media consist of etched sheets of mica with diameters of 60 > or more. The shape of the micropores and the exposed atomic groups on the pore surfaces are determined by SEM and atomic force microscopy. The research aims at clarifying the effects of confinenement- induced inhomogeneities on flow, the role of solid/fluid interactions on the dynamic fluid structure and mobility, and the importance of molecular architecture. The research results impact on flow of oil in porous rocks, magnetic data- storage discs lubrication, membrane permeability and selectivity, and melt fracturing during capillary extrusion.