Investigation of polymer membranes modified by fullerenol for dehydration of organic mixtures

Dmitrenko, Mariia; Penkova, Anastasia V.; Kuzminova, Anna; Ermakov, Sergey; Roizard, Denis

doi:10.1088/1742-6596/879/1/012010

Cited by 1 publication

(2 citation statements)

References 13 publications

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“…In both cases, cross-linking was used to prevent the solubility of CS in water and to improve mechanical stability. The same technique (chemical or thermal cross-linking method) was used to prepare pervaporation CS-based membranes with the desired properties for other separation tasks [38,39,40]. However, sometimes cross-linking leads to a decrease in the selectivity and/or permeability of a membrane [41,42].…”

Section: Introductionmentioning

confidence: 99%

“…However, sometimes cross-linking leads to a decrease in the selectivity and/or permeability of a membrane [41,42]. Moreover, membrane surface characteristics, mechanical, thermal and transport properties strongly depend on the amount of cross-linking agent in a polymer matrix [37,38,39,40,41,42]. At the same time, the search for a suitable concentration of a cross-linking agent and the optimization of membrane preparation conditions are time- and resource-consuming processes.…”

Section: Introductionmentioning

confidence: 99%

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Novel Composite Membranes Based on Chitosan Copolymers with Polyacrylonitrile and Polystyrene: Physicochemical Properties and Application for Pervaporation Dehydration of Tetrahydrofuran

et al. 2019

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Pervaporation has been applied for tetrahydrofuran (THF) dehydration with novel composite membranes advanced by a thin selective layer composed of chitosan (CS) modified by copolymerization with vinyl monomers, acrylonitrile (AN) and styrene, in order to improve the chemical and mechanical stability of CS-based membranes. Composite membranes were developed by depositing a thin selective layer composed of CS copolymers onto a commercially-available porous support based on aromatic polysulfonamide (UPM-20®). The topography and morphology of the obtained materials were studied by atomic force microscopy (AFM), scanning electron microscopy (SEM) and X-ray diffraction analysis (XRD). Thermal properties and stability were determined by coupled evolved gas analysis (EGA-MS). Transport properties were estimated in pervaporation dehydration of THF. The effect of operating parameters for the pervaporation dehydration of THF such as feed compositions and temperatures (295, 308 and 323 K) was evaluated. It was shown that CS modification with different vinyl monomers led to a difference in physical and transport properties. The composite membrane with the thin selective layer based on CS-PAN copolymer demonstrated optimal transport properties and exhibited the highest water content in the permeate with a reasonably high permeation flux.

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