. "Peer, Petra" . "3"^^ . . "Filip, Petr" . . "Brno" . "978-80-87294-44-4" . "3"^^ . "RIV/67985874:_____/13:00398350!RIV14-GA0-67985874" . . "RIV/67985874:_____/13:00398350" . . "Ostrava" . "TANGER Ltd" . . . "Zelenkov\u00E1, Jana" . . . . "4"^^ . "Spinnability of PEO solutions with respect to their aging" . . . . . "2013-10-16+02:00"^^ . . . "polyethylene oxide (PEO); ageing; electrospinning; rheological properties"@en . "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\u00B0C). 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."@en . "NANOCON 2013. 5th International Conference Proceedings" . "Spinnability of PEO solutions with respect to their aging"@en . "107064" . . "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\u00B0C). 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." . "Spinnability of PEO solutions with respect to their aging" . . . . "[207A161D9A55]" . "I, P(GAP105/11/2342), Z(AV0Z20600510)" . . . . "Spinnability of PEO solutions with respect to their aging"@en .