The development of high performance P84 co-polyimide hollow fibers for pervaporation dehydration of isopropanol

Self-assembly of inner skin hollow fiber polyelectrolyte multilayer membranes by a dynamic negative pressure layer-by-layer technique

“…Another key problem regarding hollow fiber pervaporation membrane is to reasonably arrange vacuum channel. In the previous studies, a feed was commonly supplied from the shell side while vacuum was applied on the lumen side [3][4][5][6]. Few works have dealt with the preparation of inner skin hollow fiber pervaporation membranes as it has some difficulties in forming inner separation layer with conventional dip coating method.…”

“…Compared with the plate-and-frame module, hollow fiber has some advantageous such as high-packing density, a self-contained mechanical support, a self-contained vacuum channel and hence the consequent economical superiority. A number of studies have contributed to the progress in developing such a promising pervaporation module [4][5][6][7]. However, it is challenging to directly fabricate asymmetric hollow fiber membranes with an ultra-thin defect-free selective layer which have superior pervaporation performance, meanwhile possess the ability to overcome the solvent-induced swelling [5].…”

Preparation of pilot-scale inner skin hollow fiber pervaporation membrane module: Effects of dynamic assembly conditions

“…Most of the previous studies made great efforts to fabricate the ultra-thin defect-free selective layer onto the outer surface of hollow fiber supports [3][4][5][6][7][8]. In this type of module, a feed was commonly supplied from the shell side while vacuum was applied on the lumen side.…”

“…In contrast with plate-and-frame membranepacking configurations, relatively few papers have been reported on the application of hollow fiber membranes in pervaporation because of complexities and difficulties in manufacturing hollow fiber-based pervaporation modules. However, development of asymmetric hollow fiber module for pervaporation applications has recently attached increasingly interests due to its some advantages such as high packing density, a self-supporting structure, a self-contained vacuum channel and hence the consequent economical superiority [3][4][5][6][7][8].…”

Dynamically formed inner skin hollow fiber polydimethylsiloxane/polysulfone composite membrane for alcohol permselective pervaporation

“…Currently, the plate-and-frame is the dominating module configuration employed in pervaporation. In comparison with the plate-and-frame module, the hollow fiber has the advantages such as high-packing density, a self-contained mechanical support, a self-contained vacuum channel and economical superiority [7][8][9][10][11]. Hollow fiber pervaporation membrane includes inner and outer skin modules according to the selective layer location on the inner and outer surface of hollow fibers.…”