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The role of sonication of polyethyleneoxide solutions containing magnetic nanoparticles on morphology of nanofibrous mats

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dc.title The role of sonication of polyethyleneoxide solutions containing magnetic nanoparticles on morphology of nanofibrous mats en
dc.contributor.author Peer, Petra
dc.contributor.author Stěnička, Martin
dc.contributor.author Filip, Petr
dc.contributor.author Pizúrová, Naděžda
dc.contributor.author Babayan, Vladimír Artur
dc.relation.ispartof 8th International Conference on Nanomaterials - Research & Application (NANOCON 2016)
dc.identifier.isbn 9788087294710
dc.date.issued 2016
dc.citation.spage 20
dc.citation.epage 24
dc.event.title 8th International Conference on Nanomaterials - Research and Application, NANOCON 2016
dc.event.location Brno
utb.event.state-en Czech Republic
utb.event.state-cs Česká republika
dc.event.sdate 2016-10-19
dc.event.edate 2016-10-21
dc.type conferenceObject
dc.language.iso en
dc.publisher TANGER Ltd.
dc.relation.uri https://www.nanocon.eu/cz/sbornik-nanocon-2016/
dc.subject ultrasound en
dc.subject poly(ethylene oxide) en
dc.subject magnetic nanoparticles en
dc.subject magnetorheology en
dc.subject electrospinning en
dc.description.abstract Properties of the resulting polymer nanofibers are often tailored by sonication technique applied prior or past an electrospinning process. The aim of this contribution is to evaluate morphology of nanofibrous mats formed by poly(ethylene oxide) with distributed magnetic nanoparticles (MNP) (about 20 nm in diameter) in dependence on time of sonication of the used polymer solutions. The solutions were exposed to sonication (intensity 200W, frequency 24 kHz) for 10, 30, and 60 minutes. It was shown that rheological characteristics (viscosity, storage and loss moduli) strongly depend on time of sonication (particularly phase angle) in contrast to electric conductivity and surface tension. For analysis of homogeneous distribution of MNP in polymer solution, the rheological measurements were carried out also in presence of external magnetic field. Magnetorheological efficiency (a relation of corresponding viscosities) was determined for 80, 170, and 255 mT. Consequently, changed rheological characteristics participate significantly in the process of electrospinning and resulting quality of the obtained nanofibrous mats. Qualitative changes were described by means of scanning electron microscopy (variance of mean diameter of nanofibers), transmission electron microscopy (distribution of MNP within nanofibrous mats). Static magnetic properties were determined by a vibration sample magnetometer. It was shown that even distribution of MNP in the mats can be achieved by mere sonication process without application of external magnetic field during an electrospinning process. However, time of sonication generates a degree of embedding of MNP into individual nanofibers. en
utb.faculty University Institute
dc.identifier.uri http://hdl.handle.net/10563/1007174
utb.identifier.obdid 43876987
utb.identifier.scopus 2-s2.0-85017281668
utb.identifier.wok 000410656100002
utb.source d-scopus
dc.date.accessioned 2017-09-03T21:39:55Z
dc.date.available 2017-09-03T21:39:55Z
dc.description.sponsorship ERDF, European Regional Development Fund
dc.description.sponsorship Operational Program Research and Development for Innovations; European Regional Development Fund (ERDF); National Budget of the Czech Republic [CZ.1.05/2.1.00/03.0111]
utb.ou Centre of Polymer Systems
utb.contributor.internalauthor Stěnička, Martin
utb.contributor.internalauthor Babayan, Vladimír Artur
utb.wos.affiliation [Peer, Petra; Filip, Petr] AS CR, Inst Hydrodynam, Prague, Czech Republic; [Stenicka, Martin; Babayan, Vladimir] Tomas Bata Univ, Univ Inst, Ctr Polymer Syst, Zlin, Czech Republic; [Pizurova, Nadezda] AS CR, Inst Phys Mat, Brno, Czech Republic
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