Název: Spinnability of PEO solutions with respect to their aging
Autoři: Zelenková, Jana ; Peer, Petra ; Filip, Petr
Typ dokumentu: Příspěvky z konference
Konference/Akce: NANOCON 2013. International Conference /5./, Brno (CZ), 2013-10-16 / 2013-10-18
Rok: 2013
Jazyk: eng
Abstrakt: Non - negligible portion of pol ymer commodity suffers from ageing that participates in sometimes significant changes of products attributes. Rheology represents a useful tool for a description of this process. The aim of this contribution is to evaluate possible ageing of PEO solution ( polyethylen e oxide ( M w =300,000 g/mol) dissolved in water at 10 wt.% concentration) based both on rheological characterization and on quality of electrospun fibres. Rheological measurements in steady shear and oscillatory modes were carried out using a rota tional rheometer MCR 501 (Anton Paar, Austria) equipped with the concentric cylinders geometry. The electrospinning measurements were executed with the help of a proposed laboratory device. The tip - to - collector distance attained 20 cm, applied voltage rang ed from 20 to 30 kV. The obtained electrospun fibres were analysed using a scanning electron microscope (VEGA 3, Tescan, Czech Republic). Both types of measurements were carried out in the period of several months during which the solution studied was plac ed in a dark and tempered box (25°C). The measurements indicate no ageing impact on rheological characteristics or quality of electrospun fibres. This guarantees more or less the identical quality of non - woven textiles prepared from PEO solutions regardles s of time period during which the solutions are deposited.
Klíčová slova: ageing; electrospinning; polyethylene oxide (PEO); rheological properties
Číslo projektu: GAP105/11/2342 (CEP)
Poskytovatel projektu: GA ČR
Zdrojový dokument: NANOCON 2013. 5th International Conference Proceedings, ISBN 978-80-87294-44-4

Instituce: Ústav pro hydrodynamiku AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný na externích webových stránkách.
Externí umístění souboru: http://www.nanocon.eu/files/proceedings/14/reports/2126.pdf
Původní záznam: http://hdl.handle.net/11104/0225836

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-161431


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav pro hydrodynamiku
Konferenční materiály > Příspěvky z konference