Pervaporation dehydration of isopropanol using homogeneous polyelectrolyte complex membranes of poly(diallyldimethylammonium chloride)/sodium carboxymethyl cellulose

Pervaporation dehydration of ethanol by using polyelectrolyte complex membranes based on poly (N-ethyl-4-vinylpyridinium bromide) and sodium carboxymethyl cellulose

“…The flux increases and the water content in permeate decreases with the rising ICD of PECMs. This PV result is opposite to those of PDDA-CMCNa and CS-CMCNa PECMs for PV dehydration reported in our previous work [31,32]. According to our previous work, PECMs were consisted of needlelike PECs aggregates.…”

“…Recently, we reported the fabrication of soluble PECs, such as CMCNa-PDDA [30,31], CMCNa-CS [32]. In a typical process, part of carboxylate groups (-COO − ) on the sodium carboxymethyl cellulose (CMCNa) were protonated as carboxyl groups (-COOH) during the formation of polyelectrolyte complex, then deprotonated to fabricate polyelectrolyte complex membranes (PECMs).…”

PTFE/polyamide thin-film composite membranes using PTFE films modified with ethylene diamine polymer and interfacial polymerization: Preparation and pervaporation application

“…Dehydration on IPA aqueous solutions is one of the major targets for pervaporation processes [25][26][27][28][29][30][31]. The concentrations of the feeding IPA aqueous solutions in pervaporation should be lower than the azeotropic concentration of IPA and water (87.8 wt%).…”

Layer-by-layer self-assembly of polyelectrolyte complexes and their multilayer films for pervaporation dehydration of isopropanol

“…Thus, using PEC particles as LbL building blocks reserves the typical ionic crosslinking structure of traditional LbL multilayer films. The last reason is that our previous results show that PEC casting membranes show ultra-high performances in PV dehydration [30][31][32][33].…”