Beyond Superwetting Surfaces: Dual-Scale Hyperporous Membrane with Rational Wettability for “Nonfouling” Emulsion Separation via Coalescence Demulsification
Jianqiang Wang, Bing He, Yajie Ding, Tiantian Li, Weilin Zhang, Yingjie Zhang, Fu Liu, Chuyang Y. Tang
Abstract
) and high separation efficiency (>99.0%) in 2 h of continuous cross-flow without physicochemical washing compared to superwetting membranes. The permeation is composed of two distinct immiscible liquid phases via coalescence demulsification. The surface shearing and pore throat collision coalescence demulsification mechanism is proposed, and rational interface wettability facilitates the foulant/membrane interaction for "nonfouling" separation. Beyond superwetting surfaces, a new strategy for achieving "nonfouling" emulsion separation by designing membranes with a dual-scale hyperporous structure and rational wettability is provided.
Topics & Concepts
WettingMaterials scienceEmulsionMembraneChemical engineeringCoalescence (physics)NanotechnologyPolymer chemistryComposite materialChemistryBiochemistryAstrobiologyPhysicsEngineeringPickering emulsions and particle stabilizationSurface Modification and SuperhydrophobicityPolymer Surface Interaction Studies