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

简单、低聚物和聚合物流体在明确的直微孔中的流动：分子模拟和实验相结合的方法

• 批准号: 9015882
• 负责人: Gerald Westerman-Clark
• 金额: $ 16万
• 依托单位: University of Florida
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-06-01 至 1994-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9015882&HistoricalAwards=false
• 关键词: Flow; Simple; Oligomeric; Polymeric; Fluids

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.

该项目研究了简单、低聚物和聚合物流体在完全笔直且平行的超窄孔隙内的流动。 在这些条件下，流动不能用宏观（连续）流体动力学来描述，并且其特征对流体和固体表面的分子结构非常敏感。 分子模拟与最先进的微孔表征和压降流量测量密切配合。 微孔介质由直径为60μm或更大的蚀刻云母片组成。 通过SEM和原子力显微镜确定微孔的形状和孔表面暴露的原子团。 该研究旨在阐明约束引起的不均匀性对流动的影响、固体/流体相互作用对动态流体结构和流动性的作用以及分子结构的重要性。 研究结果对多孔岩石中的石油流动、磁性数据存储盘润滑、膜渗透性和选择性以及毛细管挤压过程中的熔体破裂产生影响。