Polymer-Ceramic Pervaporation Membranes for Organic-Organic Liquid Separation (TSE99-D)

abstractcts - 9985532 y。在化学制造和污染预防领域，越来越需要能够从有机液体混合物中选择性地分离和浓缩目标物质的新工艺，以提高产品纯度并进行过程中回收。近年来，膜系统已被吹捧为实现困难的液相分离的有效手段，特别是从稀溶液中分离，相对于传统技术（如蒸馏、萃取），膜系统的能耗水平较低。尽管膜技术具有吸引力，但具有足够结构完整性和寿命的用于有机-有机液体分离的选择性膜仍然缺乏。为了应对上述挑战，该项目将重点开发和示范新型坚固的杂化聚合物，用于有机-有机分离的陶瓷（PolyCer）膜。所提出的聚合物膜将通过表面接枝聚合工艺制造，从而产生聚合物链的分子层，其末端和共价锚定在多孔陶瓷支架的孔表面。由于活性聚合物链的共价锚定，即使聚合物相暴露于有机溶剂中，PolyCer膜也能保持其结构完整性和性能。通过选择最适合所需分离任务的聚合物，可以合成聚合物表面层，以影响膜的特定分离性能。预计该项目将导致一种新技术的示范，用于定制设计一种新型的选择性和坚固的陶瓷支撑聚合物膜。新方法将允许在各种工业应用中选择性地替代能源密集型分离过程（例如蒸馏），快速部署用于过程中分离的特定任务膜，以进行回收和再循环。玛丽,

ABSTRACTCTS-9985532Y. Cohen, University of California, Los Angeles There is a growing need in chemical manufacturing and pollution prevention for new processes capable of selectively separating and concentrating target species from organic liquid mixtures to increase product purity and for in-process recycling. In recent years, membrane systems have been touted as an efficient means to achieve difficult liquid-phase separations, especially from dilute solutions, at a reduced energy consumption level relative to conventional technologies (e. g., distillation, extraction). Despite the attractiveness of membrane technology, selective membrane technology, selective membranes for organic-organic liquid separations with adequate structural integrity and longevity are lacking. In order to meet the above challenge, the proposed project will focus on the development and demonstration of novel class of robust hybrid polymer, ceramic (PolyCer) membranes for organic-organic separations. The proposed PolyCer membranes will be fabricated by a surface-graft polymerization process resulting in a molecular layer of polymer chains which are terminally and covalently anchored to the pore surface of the porous ceramic support. Given the covalent anchoring of the active polymer chains, the PolyCer membrane will retain its structural integrity and performance even when the polymer phase is exposed to organics that are good solvents for the polymer. Through the selection of the polymer most appropriate for the desired separation task, the polymer surface layer can be synthesized to impact specific separation properties to the membrane. It is expected that this project will lead to the demonstration of a new technology for the tailor design of a new class of selective and robust ceramic-supported polymer membranes. The new approach will allow the rapid deployment of task-specific membranes for in-processes separation for recovery and recycle a selective replacement of energy intensive separation processes (e.g., distillation) in a variety of industrial applications.Mary,