Systematic choice of crosslinker and filler for pervaporation membrane: A case study with dehydration of isopropyl alcohol–water mixtures by polyvinyl alcohol membranes

Separation of acid–water mixtures by pervaporation using nanoparticle filled mixed matrix copolymer membranes

“…9) with feed concentration of water. Similar results were reported 8,20 elsewhere for acetic acid-water mixtures and also other organic-water mixtures. From Fig.…”

“…The water selectivity of hydrophilic membranes may be improved by reducing swelling of the membranes. Swelling of the membranes may be reduced by crosslinking, 11,20 blending with less water swelling polymer, 3 copolymerization of two functional monomers, 1,9,13 allowing polymerization of one hydrophilic monomer in the matrix of a polymer to produce IPN type polymer 21 and using composite membranes. 10,12,14,16,19,22 These modifications improve water selectivity of the resulting membranes to some extent but flux is not increased because of the dense network structure formed by most of these modifications.…”

Fabrication of high-performance PVA/PAN composite pervaporation membranes crosslinked by PMDA for wastewater desalination

“…That is, the feed mixture first dissolves in the membrane feed side. Then, the permeates diffuse through the membrane and detach to the downstream side in a vapor state (Cheng et al 2017;Das et al 2011;Hong et al 2011;Rachipudi et al 2011;Xu et al 2017;Zhang et al 2009). Therefore, a PV membrane has a dense selective layer which can mitigate the fouling problem encountered by a typical MD process where the pores of the MD membrane are easily fouled during the separation process.…”

Development of novel grafted hybrid PVA membranes using glycidyltrimethylammonium chloride for pervaporation separation of water–isopropanol mixtures

“…Aqueous IPA is widely used as a cleaning agent in modern chemical, semiconductor and electronic industries [7,8], where recycling of waste IPA is essential from the environmental and economical point of view. Unfortunately, it is known to form an azeotrope with water in a mixture of 87.8% IPA and this causes difficulty in its recovery by conventional distillation processes [9,10].…”