title: Synthesis and characterization of biopolymer based mixed matrix membranes for pervaporative dehydration.
abstract: Several blend membranes were prepared from different weight ratios of polyvinyl alcohol (PVA) and hydroxyethyl cellulose (HEC) and these unfilled membranes were crosslinked with maleic acid. In a similar way mixed matrix blend membranes were also prepared by varying weight ratio of PVA and HEC with micro and nano bentonite filler in each of these blends. These membranes were used for pervaporative dehydration of 89 wt% tetrahydrofuran (THF). Three membranes designated as UF (unfilled), MF2 (containing 2 wt% micro filler) and NF2 (containing 2 wt% nano filler) showing the best results for flux and selectivity were identified. These membranes were characterized by FTIR, UV, XRD and DTA-TG and used for separation of 80-99 wt% THF from water by pervaporation. The NF2 membrane was found to show the best results in terms of flux and separation factor.
authors: Department of Polymer Science and Technology, University of Calcutta, 92, A.P.C. Road, Kolkata 700009, India.
authors: Paramita
authors: P
authors: Das
authors: Department of Polymer Science and Technology, University of Calcutta, 92, A.P.C. Road, Kolkata 700009, India. Electronic address: samitcu2@yahoo.co.in.
authors: Samit Kumar
authors: SK
authors: Ray
mesh_terms: D001704:Biopolymers / Q000737:chemistry*; D002482:Cellulose / Q000031:analogs & derivatives / Q000737:chemistry; D005663:Furans / Q000737:chemistry; D008298:Maleates / Q000737:chemistry; D011142:Polyvinyl Alcohol / Q000737:chemistry; D014867:Water / Q000737:chemistry*
chemical_list: D001704:Biopolymers; D005663:Furans; D008298:Maleates; D014867:Water; C018674:tetrahydrofuran; D011142:Polyvinyl Alcohol; D002482:Cellulose; C030272:maleic acid
keywords: Biopolymer blend; Characterization; Crosslinker; Diffusion coefficient; Filler; Permeability