Novel sodium alginate composite membranes prepared by incorporating cobalt(III) complex particles used in pervaporation separation of water–acetic acid mixtures at different temperatures

Pervaporation dehydration of isopropanol using blend membranes of chitosan and hydroxypropyl cellulose

“…It is expected that thickness of the dry layer would increase with increasing membrane thickness, thereby resulting in an improved selectivity as observed in the present study. Similar effects have also been observed in our earlier reports [7,31].…”

“…One major industrial application of PV separation has been the dehydration of alcohols [4,5] using water-selective membranes. In our earlier research, we have developed blends, interpenetrating networks (IPNs) and mixed matrix membranes of hydrophilic polymers such as sodium alginate, poly(vinyl alcohol), gelatin, chitosan, etc., for the PV dehydration studies on aqueous-organic mixtures [6][7][8][9][10]. In continuation of these efforts, we have now chosen hydroxypropyl cellulose (HPC), a water-soluble cellulose ether and a carbohydrate polymer, which forms the compatible blends with a wide range of water-soluble polymers; particularly, its compatibility with another carbohydrate polymer such as chitosan (CS) is important to prepare their blends.…”

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

“…Further, it also improves mechanical properties of the membranes. Among the various adsorbents zeolite, 7,10,25 metal oxides, 4 sodium montmorillonite (Na-MMT), 24,26,27 etc., have been tried for making MMM. Incorporation of nanosize fillers as adsorbent in dense membrane improves its performance (normalized flux and selectivity) in both gas separation and pervaporation for several types of feed mixtures.…”

Poly(vinyl alcohol)–zeolite T mixed matrix composite membranes for pervaporation separation of water+1,4-dioxane mixtures

“…Hydrophilic polymers modified with grafting, blending, interpenetrating polymeric networks (IPN's) and filler-incorporated membranes have been more promising than plain membranes in PV dehydration of aqueous-organic mixtures [8][9][10][11]. The polymers used for PV applications should allow selectively one of the desired components of the mixtures.…”