Novel Composite Membranes Based on Chitosan Copolymers with Polyacrylonitrile and Polystyrene: Physicochemical Properties and Application for Pervaporation Dehydration of Tetrahydrofuran
| Autor: | Maria E. Dmitrenko, Ilya V. Vorotyntsev, Ksenia V. Otvagina, Andrey V. Vorotyntsev, Anastasia V. Penkova, Anna I. Kuzminova, Tatyana S. Sazanova |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Filtration and Separation 02 engineering and technology lcsh:Chemical technology 010402 general chemistry 01 natural sciences Article tetrahydrofuran Styrene chemistry.chemical_compound pervaporation Copolymer copolymers composite membrane Chemical Engineering (miscellaneous) lcsh:TP1-1185 lcsh:Chemical engineering Process Chemistry and Technology Polyacrylonitrile technology industry and agriculture selective layer lcsh:TP155-156 dehydration Permeation 021001 nanoscience & nanotechnology 0104 chemical sciences Membrane chemistry Chemical engineering Polystyrene Pervaporation Acrylonitrile chitosan 0210 nano-technology |
| Zdroj: | Membranes Volume 9 Issue 3 Membranes, Vol 9, Iss 3, p 38 (2019) |
| ISSN: | 2077-0375 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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