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Paramita Das,Samit Kumar Ray 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.34 No.-
Plasticized polyvinyl chloride (PPVC) membranes were prepared by incorporating 20, 25 and 30 wt% ofdioctyl phthalate (DOP) plasticizer in the matrix of PVC. Filled PPVC membranes were prepared byincorporating 1, 2 and 3 wt% bentonite clay in the PPVC membrane containing 25 wt% of DOP. Themembranes were characterized by FTIR, DTA-TG, XRD, SEM and mechanical properties. Thesemembranes were used for sorption and pervaporation of 1–18 wt% tetrahydrofuran (THF) in water. Thepreferential sorption of the organophilic membranes were analyzed in terms of thermodynamicinteraction parameters. The permeability and the diffusion coefficient of the solvents were determined.
Recovery of pyridine from water by pervaporation using filled and crosslinked EPDM membranes
Nayan Ranjan Singha,Samit Kumar Ray,Paramita Das 한국공업화학회 2013 Journal of Industrial and Engineering Chemistry Vol.19 No.6
Organoselective membrane was prepared from ethylene propylene diene monomer (EPDM) rubber. Crosslinked EPDM rubber was filled with 2, 4 and 6 wt% N330 carbon black filler to produce three different filled membranes designated as EPDMCV2, EPDMCV4 and EPDMCV6, respectively. These filled rubber membranes were used for pervaporative recovery of low concentration of pyridine from water. These filled membranes were characterized by crosslink density, SEM, XRD and mechanical properties. Sorption thermodynamics were discussed. Partial permeability, intrinsic membrane selectivity and diffusion coefficients of solvents were also determined. The filled membranes showed much higher pyridine selectivity than most of the membranes reported for similar system.