Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China.
Institute of Materials for Energy and Environment, School of Materials Science and Engineering, Qingdao University, Qingdao 266071, P. R. China.
Soft Matter. 2018 Apr 4;14(14):2649-2654. doi: 10.1039/C8SM00139A.
The facile fabrication of a hydrogel-networks coated membrane for efficient oil-in-water emulsion separation was successfully achieved through the photo-initiated free radical polymerization of 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS). Due to the combination of the special wettability of the PAMPS hydrogel with the microscale multi-porous structure of the substrate, such a membrane is able to achieve the separation of sundry surfactants stabilized oil-in-water emulsions with high separation efficiency, large permeation flux and excellent stability. In particular, the PAMPS hydrogel coated membrane exhibits selective separation for cationic and nonionic types of surfactants stabilized emulsions via hydrogen bond interactions. The fabrication protocol is facile, cost-efficient and environmentally friendly, which can be scaled up to facilitate its practicability in sewage remediation.
通过 2-丙烯酰胺基-2-甲基-1-丙磺酸（AMPS）的光引发自由基聚合，成功地制备了用于高效油水乳液分离的水凝胶网络涂层膜。由于 PAMPS 水凝胶的特殊润湿性与基底的微尺度多孔结构相结合，这种膜能够实现各种表面活性剂稳定的油水乳液的高效分离，具有高分离效率、大渗透通量和优异的稳定性。特别是，PAMPS 水凝胶涂层膜通过氢键相互作用对阳离子和非离子型表面活性剂稳定的乳液表现出选择性分离。该制备方案简单、经济高效且环保，可以扩大规模以促进其在污水修复中的实用性。
