The influence of rheological changes during sonication of poly(ethylene oxide) solutions containing magnetic nanoparticles on morphology of nanofibrous mats
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985874%3A_____%2F17%3A00487316" target="_blank" >RIV/67985874:_____/17:00487316 - isvavai.cz</a>
Result on the web
—
DOI - Digital Object Identifier
—
Alternative languages
Result language
angličtina
Original language name
The influence of rheological changes during sonication of poly(ethylene oxide) solutions containing magnetic nanoparticles on morphology of nanofibrous mats
Original language description
Morphology of nanofibrous mats formed by poly(ethylene oxide) (PEO) with distributed magnetic nanoparticles (about 20 nm in diameter) was evaluated in dependence on time of sonication of the initial polymer solutions (PEO dissolved in distilled water). The solutions were exposed to sonication (intensity 200 W, frequency 24 kHz) for 10, 30, and 60 minutes. In contrast to electric conductivity and surface tension, rheological characteristics (viscosity, storage and loss moduli) strongly depend on time of sonication (particularly phase angle). The rheological measurements were carried out also in presence of external magnetic field with the aim to analyse homogeneous distribution of magnetic nanoparticles in polymer solution. Magnetorheological efficiency (a relation of corresponding viscosities) was determined for 80, 170, and 255 mT. Consequently, it was shown that changed rheological characteristics participate significantly in the process of electrospinning and resulting quality of the obtained nanofibrous mats.
Czech name
—
Czech description
—
Classification
Type
O - Miscellaneous
CEP classification
—
OECD FORD branch
10404 - Polymer science
Result continuities
Project
<a href="/en/project/GA17-26808S" target="_blank" >GA17-26808S: Characterization of polymer melts and solutions by means of constitutive equations</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů