Selection of cross-linking agent and control of microstructure of gas-phase cross-linked composite membrane for organic solvent separation

Disclosed herein are gas-phase cross-linked composite membranes in the form of a cross-linked polymer and a defined inorganic material. The membranes disclosed herein can have a narrow pore size distribution and precise molecular separation capability, and can be used for organic solvent nanofiltration and organic solvent reverse osmosis. Methods of forming membranes and filtration are also disclosed herein. In a preferred embodiment, a gas-phase crosslinked composite membrane is obtained by exposing a composite membrane comprising a polyimide and UiO-66-NH2 particles to an amine vapor. 本文公开了以交联聚合物和限定的无机材料形式的气相交联复合膜。本文公开的膜可以具有窄的孔径分布和精确的分子分离能力，并且可以用于有机溶剂纳滤和有机溶剂反渗透。本文还公开了形成膜和过滤的方法。在优选实施方案中，气相交联复合膜通过使包含聚酰亚胺和UiO-66-NH2颗粒的复合膜暴露于胺蒸气而获得。