介观物理学
膜
材料科学
相位反转
化学
启发式
纳米技术
聚合物
相图
相(物质)
聚合膜
工艺工程
计算机科学
反演(地质)
化学物理
工程类
物理
地质学
有机化学
复合材料
古生物学
操作系统
构造盆地
量子力学
生物化学
作者
Yuanhui Tang,Yakai Lin,David M. Ford,Xianghong Qian,M. Rosario Cervellere,Paul C. Millett,Xiaolin Wang
标识
DOI:10.1016/j.memsci.2021.119810
摘要
Phase inversion processes, in which a polymer is transformed from a thin solution film into a solid matrix upon exposure to another gas/liquid phase or a temperature change, represent the most widely used manufacturing technique for polymeric membranes. However, the level of understanding of the connection between process variables and final membrane structure remains surprisingly empirical. Modeling efforts have largely been based on heuristics that correlate experimentally observed pore structures with process conditions, using thermodynamic phase diagrams and macroscopic transport models. Recent developments have added mesoscopic phase field approaches and molecular simulations to the array of modeling techniques applied to this problem. These latest developments hold the promise of delivering accurate, directly visualized representations of membrane pore structures formed by a given process. This article firstly provides an overview of the capabilities and limitations of the different modeling techniques and then focuses on how they have been developed and applied over the last 40 years to aid our understanding of membrane formation via phase inversion processes, especially nonsolvent induced phase separation (wet-casting), vapor/evaporation induced phase separation (dry-casting), and thermally-driven. Meanwhile, current challenges and future prospects, such as linking techniques across length and time scales as well as capturing the detailed effects of polymer crystallization, are also discussed. This review aims to offer inspiration for further progress in the field of modeling development for membrane preparation by phase inversion processes.
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