The role of sonication of PEO solutions with magnetic nanoparticles on morphology of the resulting nanofibrous mats

0468359 - ÚH 2017 RIV CZ eng A - Abstract
Peer, Petra - Stěnička, M. - Filip, Petr - Pizúrová, Naděžda - Babayan, V.
The role of sonication of PEO solutions with magnetic nanoparticles on morphology of the resulting nanofibrous mats.
NANOCON 2016. List of Abstacts. Ostrava: Tanger Ltd., 2016 - (Shrbená, J.). s. 30. ISBN 978-80-87294-68-0.
[NANOCON 2016. International Conference on Nanomaterials - Research and Application /8./. 19.10.2016-21.10.2016, Brno]
Institutional support: RVO:67985874 ; RVO:68081723
Keywords : PEO solutions * Nanoparticles * Nanofiber
Subject RIV: BK - Fluid Dynamics; BM - Solid Matter Physics ; Magnetism (UFM-A)

Properties of the resulting polymer nanofibres 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 (about 20nm 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 magnetic field and magnetorheological efficiency (a relation of corresponding ciscosities) was process of electrospinning and resulting wuality of the obtained nanofibrous mats.
Permanent Link: http://hdl.handle.net/11104/0266233