Nanoscience for Energy Technology and Sustainability, Department of Mechanical and Process Engineering , Eidgenössische Technische Hochschule (ETH) Zurich , Tannenstrasse 3 , Zurich CH-8092 , Switzerland.
ACS Appl Mater Interfaces. 2018 Jun 13;10(23):19305-19310. doi: 10.1021/acsami.8b02329. Epub 2018 Jun 4.
In chemical separation, thin membranes exhibit high selectivity, but often require a support at the expense of permeance. Here, we report a pinhole-free polymeric layer synthesized within freestanding carbon nanotube buckypaper through vapor-liquid interfacial polymerization (VLIP). The VLIP process results in thin, smooth and uniform polyamide and imide films. The scaffold reinforces the nanofilm, defines the membrane thickness, and introduces an additional transport mechanism. Our membranes exhibit superior gas selectivity and osmotic semipermeability. Plasticization resistance and high permeance in hydrocarbon separation together with a considerable improvement in water-salt permselectivity highlight their potential as new membrane architecture for chemical separation.
在化学分离中，薄膜表现出高选择性，但往往需要支撑物来提高渗透性。在这里，我们报告了一种通过汽液界面聚合（VLIP）在独立式碳纳米管纸内合成的无针孔聚合物层。VLIP 工艺产生了薄、光滑且均匀的聚酰胺和酰亚胺薄膜。该支架增强了纳米薄膜，定义了膜的厚度，并引入了额外的传输机制。我们的膜表现出优异的气体选择性和渗透半透性。在碳氢化合物分离中具有抗塑化和高通量的特性，以及对水盐选择性的显著提高，突出了它们作为化学分离新型膜结构的潜力。
Zotero 插件