Development of superhydrophobic electrospun fibrous membrane of polymers of intrinsic microporosity (PIM-2)

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buir.contributor.authorSatılmış, Bekir
buir.contributor.authorUyar, Tamer
buir.contributor.orcidUyar, Tamer|0000-0002-3989-4481
dc.citation.epage94en_US
dc.citation.spage87en_US
dc.citation.volumeNumber112en_US
dc.contributor.authorSatılmış, Bekiren_US
dc.contributor.authorUyar, Tameren_US
dc.date.accessioned2020-01-31T18:30:04Z
dc.date.available2020-01-31T18:30:04Z
dc.date.issued2018
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.departmentNanotechnology Research Center (NANOTAM)en_US
dc.description.abstractPolymers of intrinsic microporosity (PIMs) are increasingly recognized as a potential membrane material for adsorption and separation applications due to their permanent porosity and solution processability. PIM-2 can be produced using commercially available 5,5′,6,6′-Tetrahydroxy-3,3,3′,3′-tetramethyl-1,1′-spirobisindane and decafluorobiphenyl monomers in the powder form. It possesses considerable amount of fluorine in the polymer backbone and this feature could provide significant hydrophobicity to polymer. This research aims to investigate the fabrication of self-standing PIM-2 fibrous membranes by electrospinning method to introduce a useful material for adsorption applications. Electrospinning was performed using tetrachloroethane as a solvent and beadfree, uniform fibers were produced as confirmed by SEM imaging. Average fiber diameter was calculated as 5.5 ± 1.5 μm for a self-standing fibrous membrane of PIM-2. Structural characterization was conducted using FT-IR, NMR and XPS spectroscopies showing the purity of pristine powder and fibrous membrane of PIM-2. Thermal stability of PIM-2 fibrous membrane was investigated using TGA and it shows no discernible weight loss below 450 °C. The porosity of fibrous membrane was investigated by N2 adsorption/desorption measurements that indicates significant microporosity with ∼600 m2 g−1 BET surface area. In addition, the hydrophobicity of PIM-2 was tested by water contact angle measurements, showing 155 ± 6° WCA, indicating superhydrophobicity owing to rough surface and high fluorine content. Consequently, the combination of straightforward synthesis, solution processability, high thermal stability, high surface area, and superhydrophobicity makes PIM-2 a promising candidate for adsorption applications. Therefore, it was successfully employed in organic and oil adsorption. Fibrous membranes of PIM-2 has shown up to 2200 ± 100% and 1900 ± 100% weight gain after in contact with silicon oil and DMSO respectively. In addition, dense membrane of PIM-2 was prepared by solvent casting method and the uptake ability was compared with fibrous membrane showing that fibrous form is more convenient for liquid adsorption applications.en_US
dc.embargo.release2021-03-01
dc.identifier.doi10.1016/j.eurpolymj.2018.12.029en_US
dc.identifier.issn0014-3057
dc.identifier.urihttp://hdl.handle.net/11693/52967
dc.language.isoEnglishen_US
dc.publisherElsevieren_US
dc.relation.isversionofhttps://dx.doi.org/10.1016/j.eurpolymj.2018.12.029en_US
dc.source.titleEuropean Polymer Journalen_US
dc.subjectPolymers of Intrinsic Microporosityen_US
dc.subjectPIM-2en_US
dc.subjectElectrospinningen_US
dc.subjectMembraneen_US
dc.subjectNanofibersen_US
dc.subjectAdsorptionen_US
dc.subjectSuperhydrophobicen_US
dc.subjectOil removalen_US
dc.titleDevelopment of superhydrophobic electrospun fibrous membrane of polymers of intrinsic microporosity (PIM-2)en_US
dc.typeArticleen_US

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Institute of Materials Science and Nanotechnology (UNAM)
Nanotechnology Research Center (NANOTAM)