Mixed matrix membranes of sodium alginate and poly(vinyl alcohol) for pervaporation dehydration of isopropanol at different temperatures

Synergistic and Competitive Aspects of the Adsorption of Poly(ethylene glycol) and Poly(vinyl alcohol) onto Na-Bentonite

“…The adsorption of organic molecules, oligomers and polymers onto the surface of clay minerals has been studied in great depth within numerous scientific fields; those pertinent to poly(vinyl alcohol) (PVOH) and poly(ethylene glycol) (PEG) include; drilling muds and treatment fluids within the petroleum industry, 1 soil structure stabilisation, 2 water clarification, mineral separation in mining, membrane technology in pervaporation, 3 polymer-clay nanocomposites, [4][5][6][7][8] and biomedical hydrogels. 9 Central to these studies is the need to stabilize or destabilize dispersed clay minerals in colloidal systems in order to control the formulation viscosity or improve the mechanical or barrier properties of the final products/constructs.…”

In situ regulation of micro-pore to design high performance polyimide membranes for pervaporation dehydration of isopropanol

“…This is attributed to the collective effects of (1) electrostatic cross-linking due to the existence of iron(III) ions, (2) decomposition of acetylacetonate as a micro-pore former, (3) decarboxylation induced cross-linking and (4) in-situ formation of iron oxide nanoparticles, as proved by XRD, PALS and vapor sorption characterizations. Table 3 shows pervaporation performance of the best membrane in this study compared with various composite membranes for IPA/water dehydration reported in literatures [34,57,[60][61][62][63][64][65]. The newly developed PI-20%-400 membrane has a molar selectivity which is comparable with those high performance membranes in literatures, while its water permeability is better than most of them.…”

Ceramic membrane synthesis based on alkali activated blast furnace slag for separation of water from ethanol

“…Different membranes can be used in pervaporation, including ceramic [10] polymeric [11] and composite [2,12] membranes. Ceramic membranes have attracted more interest because of their chemical and thermal stability, applicability in high pressure operation, durability and mechanical stability [13][14][15].…”