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10.3390/nano10122349
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Article

Control of Nanostructured Polysulfone Membrane Preparation by Phase Inversion Method

by
Cristina Bărdacă Urducea
1,
Aurelia Cristina Nechifor
1,*,
Ioana Alina Dimulescu
1,
Ovidiu Oprea
2,
Gheorghe Nechifor
1,
Eugenia Eftimie Totu
1,*,
Ibrahim Isildak
3,
Paul Constantin Albu
4 and
Simona Gabriela Bungău
5
1
Analytical Chemistry and Environmental Engineering Department, University Politehnica of Bucharest, 011061 Bucharest, Romania
2
Department of Inorganic Chemistry, Physical Chemistry and Electrochemistry, University Politehnica of Bucharest, 011061 Bucharest, Romania
3
Department of Bioengineering, Faculty of Chemical and Metallurgical Engineering, Yildiz Technical University, 34210 Esenler-Istanbul, Turkey
4
IFIN Horia Hulubei, Radioisotopes & Radiat Metrol Dept DRMR, 30 Reactorului Str, 023465 Magurele, Romania
5
Faculty of Medicine and Pharmacy, University of Oradea, 1 Universităţii Str., Oradea, 410087 Bihor, Romania
*
Authors to whom correspondence should be addressed.
Nanomaterials 2020, 10(12), 2349; https://doi.org/10.3390/nano10122349
Submission received: 8 November 2020 / Revised: 21 November 2020 / Accepted: 23 November 2020 / Published: 26 November 2020
(This article belongs to the Special Issue Nanomaterials for Membranes, Membrane Reactors and Catalyst Systems)
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Abstract

The preparation of membranes from polymer solutions by the phase inversion method, the immersion—precipitation technique has proved since the beginning of obtaining technological membranes the most versatile and simple possibility to create polymeric membrane nanostructures. Classically, the phase inversion technique involves four essential steps: Preparation of a polymer solution in the desired solvent, the formation of the polymer solution film on a flat support, the immersion of the film in a coagulation bath containing polymer solvents, and membrane conditioning. All phase inversion stages are important for the prepared membrane’s nanostructure and have been studied in detail for more than six decades. In this paper, we explored, through an electrochemical technique, the influence of the contact time with the polymer film’s environment until the introduction into the coagulation bath. The system chosen for membrane preparation is polysulfone-dimethylformamide-aqueous ethanol solution (PSf-DMF-EW). The obtained nanostructured membranes were characterized morphologically and structurally by scanning electron microscopy (SEM) and thermal analysis (TA), and in terms of process performance through water permeation and bovine serum albumin retention (BSA). The membrane characteristics were correlated with the polymeric film exposure time to the environment until the contact with the coagulation bath, following the diagram of the electrochemical parameters provided by the electrochemical technique.
Keywords: polysulfone membrane; phase inversion; immersion–precipitation technique; phase inversion parameters; electrochemical monitorization polysulfone membrane; phase inversion; immersion–precipitation technique; phase inversion parameters; electrochemical monitorization
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MDPI and ACS Style

Bărdacă Urducea, C.; Nechifor, A.C.; Dimulescu, I.A.; Oprea, O.; Nechifor, G.; Totu, E.E.; Isildak, I.; Albu, P.C.; Bungău, S.G. Control of Nanostructured Polysulfone Membrane Preparation by Phase Inversion Method. Nanomaterials 2020, 10, 2349. https://doi.org/10.3390/nano10122349

AMA Style

Bărdacă Urducea C, Nechifor AC, Dimulescu IA, Oprea O, Nechifor G, Totu EE, Isildak I, Albu PC, Bungău SG. Control of Nanostructured Polysulfone Membrane Preparation by Phase Inversion Method. Nanomaterials. 2020; 10(12):2349. https://doi.org/10.3390/nano10122349

Chicago/Turabian Style

Bărdacă Urducea, Cristina, Aurelia Cristina Nechifor, Ioana Alina Dimulescu, Ovidiu Oprea, Gheorghe Nechifor, Eugenia Eftimie Totu, Ibrahim Isildak, Paul Constantin Albu, and Simona Gabriela Bungău. 2020. "Control of Nanostructured Polysulfone Membrane Preparation by Phase Inversion Method" Nanomaterials 10, no. 12: 2349. https://doi.org/10.3390/nano10122349

APA Style

Bărdacă Urducea, C., Nechifor, A. C., Dimulescu, I. A., Oprea, O., Nechifor, G., Totu, E. E., Isildak, I., Albu, P. C., & Bungău, S. G. (2020). Control of Nanostructured Polysulfone Membrane Preparation by Phase Inversion Method. Nanomaterials, 10(12), 2349. https://doi.org/10.3390/nano10122349

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