Polyimide Asymmetric Membrane vs. Dense Film for Purification of MTBE Oxygenate by Pervaporation
Membrane properties are determined by their morphology, which may be symmetric (dense) or asymmetric (dense/porous). Two membrane types based on the poly[(4,4′-oxydiphenylene)pyromelliteimide] (symmetric dense and asymmetric dense/porous) were prepared for a comparative study of morphology...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-03-01
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| Series: | Symmetry |
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| Online Access: | https://www.mdpi.com/2073-8994/12/3/436 |
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| author | Alexandra Pulyalina Maksim Tataurov Ilya Faykov Valeriia Rostovtseva Galina Polotskaya |
| author_facet | Alexandra Pulyalina Maksim Tataurov Ilya Faykov Valeriia Rostovtseva Galina Polotskaya |
| author_sort | Alexandra Pulyalina |
| collection | DOAJ |
| description | Membrane properties are determined by their morphology, which may be symmetric (dense) or asymmetric (dense/porous). Two membrane types based on the poly[(4,4′-oxydiphenylene)pyromelliteimide] (symmetric dense and asymmetric dense/porous) were prepared for a comparative study of morphology, physical properties, and transport characteristics in the pervaporation of methanol/MTBE mixture over a wide range of concentrations including the azeotropic composition. The asymmetric membrane is a good example of improving the transport properties of the polyimide by creating structure composed of a thin dense top layer on the surface of sponge-like microporous substrate. It was found that the use of the asymmetric membrane allows increasing the total flux in separation of azeotropic mixture by 15 times as compared with the dense membrane. |
| first_indexed | 2024-04-14T06:42:39Z |
| format | Article |
| id | doaj.art-2220c37273ef41b596997c23a7c9d56a |
| institution | Directory Open Access Journal |
| issn | 2073-8994 |
| language | English |
| last_indexed | 2024-04-14T06:42:39Z |
| publishDate | 2020-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Symmetry |
| spelling | doaj.art-2220c37273ef41b596997c23a7c9d56a2022-12-22T02:07:17ZengMDPI AGSymmetry2073-89942020-03-0112343610.3390/sym12030436sym12030436Polyimide Asymmetric Membrane vs. Dense Film for Purification of MTBE Oxygenate by PervaporationAlexandra Pulyalina0Maksim Tataurov1Ilya Faykov2Valeriia Rostovtseva3Galina Polotskaya4Institute of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, 198504 Saint Petersburg, RussiaInstitute of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, 198504 Saint Petersburg, RussiaInstitute of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, 198504 Saint Petersburg, RussiaInstitute of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, 198504 Saint Petersburg, RussiaInstitute of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, 198504 Saint Petersburg, RussiaMembrane properties are determined by their morphology, which may be symmetric (dense) or asymmetric (dense/porous). Two membrane types based on the poly[(4,4′-oxydiphenylene)pyromelliteimide] (symmetric dense and asymmetric dense/porous) were prepared for a comparative study of morphology, physical properties, and transport characteristics in the pervaporation of methanol/MTBE mixture over a wide range of concentrations including the azeotropic composition. The asymmetric membrane is a good example of improving the transport properties of the polyimide by creating structure composed of a thin dense top layer on the surface of sponge-like microporous substrate. It was found that the use of the asymmetric membrane allows increasing the total flux in separation of azeotropic mixture by 15 times as compared with the dense membrane.https://www.mdpi.com/2073-8994/12/3/436asymmetric membranepervaporationmtbepolyimidemethanol |
| spellingShingle | Alexandra Pulyalina Maksim Tataurov Ilya Faykov Valeriia Rostovtseva Galina Polotskaya Polyimide Asymmetric Membrane vs. Dense Film for Purification of MTBE Oxygenate by Pervaporation Symmetry asymmetric membrane pervaporation mtbe polyimide methanol |
| title | Polyimide Asymmetric Membrane vs. Dense Film for Purification of MTBE Oxygenate by Pervaporation |
| title_full | Polyimide Asymmetric Membrane vs. Dense Film for Purification of MTBE Oxygenate by Pervaporation |
| title_fullStr | Polyimide Asymmetric Membrane vs. Dense Film for Purification of MTBE Oxygenate by Pervaporation |
| title_full_unstemmed | Polyimide Asymmetric Membrane vs. Dense Film for Purification of MTBE Oxygenate by Pervaporation |
| title_short | Polyimide Asymmetric Membrane vs. Dense Film for Purification of MTBE Oxygenate by Pervaporation |
| title_sort | polyimide asymmetric membrane vs dense film for purification of mtbe oxygenate by pervaporation |
| topic | asymmetric membrane pervaporation mtbe polyimide methanol |
| url | https://www.mdpi.com/2073-8994/12/3/436 |
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