Scanning Probe Microscopy Used to Estimate the Structural Asymmetry of Filters with Micro- and Nanopores

Investigation of the asymmetric hollow fiber membranes structure using an atomic force microscopy

“…The ease of each species transport is quantified by the permeability under the perfect mixing assumption on both membrane sides. However, in practice, it is practically impossible to describe the gas separation process in hollow-fiber membranes, where the velocity and concentration gradient varies continuously along the channel length [15]. Besides, it is additionally necessary to take into account the termination length of the compound-filled module ends, which do not participate in mass transfer, but affect the velocity characteristics of gas movement in the channel.…”