Characterisation of Romakon™-PM pervaporation membranes for the separation of dilute aqueous alcohol mixtures

Sapegin, Denis Andzheevich; Gubanova, G. N.; Кононова, С. В.; Kruchinina, E. V.; Сапрыкина, Н. Н.; Volkov, A. Ya.; Вылегжанина, М. Э.

doi:10.1016/j.seppur.2020.116605

Cited by 10 publications

(3 citation statements)

References 31 publications

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“…Aromatic poly(amide-imide)s (PAIs) have proven to be promising membrane-forming polymers [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. Due to their ability to form defect-free dense films with good mechanical characteristics (for example, E ≈ 3.79 GPa [14]), they are used in manufacturing membranes of various morphologies.…”

Section: Introductionmentioning

confidence: 99%

“…The demand for highly efficient membranes has stimulated development of phase inversion films based on these polymers [2][3][4][5][6][7][8][9][10][11][12][13][14]. They include not only diffusion asymmetric membranes for pervaporation separation of liquids, but also ultra-and nanoporous membranes that serve as substrates in composite diffusion membranes.…”

Section: Introductionmentioning

confidence: 99%

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New Membrane-Forming Aromatic Co-Poly(amide-imide)s: Influence of the Chemical Structure on the Morphological, Thermal and Transport Properties

et al. 2022

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Polymer film membranes are used to solve specific separation problems that dictate structural requirements. Structural and morphological parameters of film membranes based on glassy polyheteroarylenes can be controlled in the process of preparation from solutions that opens up prospects for obtaining structured membranes required for targeted separation. In the case of aromatic poly(amide-imide)s, the possibility of controlling film formation and structure virtually has not been studied. In the present work, a series of homologous co-poly(amide-imide)s differing in the number of repeating units with carboxyl-substituted aromatic fragments was synthesized by polycondensation. Comparative analysis of the processes of formation of membranes with different morphologies based on these polymers under equal conditions was performed. New information was obtained about the influence of the amounts of carboxyl groups and the residual solvent on structural properties of asymmetric membranes. The influence of these factors on transport properties of dense membranes under pervaporation conditions was studied. It was demonstrated that in the case of carboxyl-containing poly(amide-imide)s, the domains formed during film preparation had a significant effect on membrane properties.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

New Membrane-Forming Aromatic Co-Poly(amide-imide)s: Influence of the Chemical Structure on the Morphological, Thermal and Transport Properties

et al. 2022

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“…Separation and purification of alcohol from water/alcohol mixtures are very important due to their wide application in the chemical industry or as oil-based fuels (Nguyen et al, 2020 ; Sapegin et al, 2020 ). Generally, alcohols and water mixtures often form azeotropes or are similar in their physicochemical properties, making their separation particularly difficult.…”

Section: Introductionmentioning

confidence: 99%

Alkyl Chain Grafted-Reduced Graphene Oxide Membrane for Effective Separation of Water/Alcohol Miscible Mixtures

Zhang

Yang

et al. 2020

Front. Chem.

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Separation of water/alcohol miscible mixtures via direct filtration only under gravity is a great challenge. Here, different alkyl chain grafted-reduced graphene oxide (alkyl-RGO) is synthesized and characterized. The hydrophobic alkyl chains can considerably modify the oil-wettability of the membranes and avoid water permeation. The alkyl-RGO membrane obtained by vacuum filtration can separate water/oil immiscible mixtures. Importantly, water/alcohol miscible mixtures could also be separated solely under gravity, where alcohols efficiently permeate the alkyl-RGO membrane while water is prevented through the membrane. The separation efficiency of C12H-RGO membrane reaches up to about 0.04 vol% of water content for the case of separating an n-propanol/water (90:10 v/v) mixture with high n-propanol permeability of approx. 685 mL m−2 h−1. Molecular simulations indicate that the selective absorption ability and diffusion rate also affect water/alcohol separation. The alkyl-RGO membranes via gravity driven filtration can extend the applications of separation of water/alcohol miscible mixtures.

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Recent advances of thin film composite membranes for pervaporation applications: A comprehensive review

et al. 2021

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Characterisation of Romakon™-PM pervaporation membranes for the separation of dilute aqueous alcohol mixtures

Cited by 10 publications

References 31 publications

New Membrane-Forming Aromatic Co-Poly(amide-imide)s: Influence of the Chemical Structure on the Morphological, Thermal and Transport Properties

New Membrane-Forming Aromatic Co-Poly(amide-imide)s: Influence of the Chemical Structure on the Morphological, Thermal and Transport Properties

Alkyl Chain Grafted-Reduced Graphene Oxide Membrane for Effective Separation of Water/Alcohol Miscible Mixtures

Recent advances of thin film composite membranes for pervaporation applications: A comprehensive review

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