On behaviour of PVB solutions in electrospinning

0342992 - ÚH 2011 RIV CZ eng C - Conference Paper (international conference)
Švrčinová, Petra - Lubasová, D. - Filip, Petr - Martinová, L.
On behaviour of PVB solutions in electrospinning.
Engineering Mechanics 2010. Prague: Institute of Thermomechanics AS CR, v. v. i., 2010 - (Zolotarev, I.), Article no. 035. ISBN 978-80-87012-26-0.
[Engineering Mechanics 2010. Svratka (CZ), 10.05.2010-13.05.2010]
R&D Projects: GA AV ČR IAA200600703
Institutional research plan: CEZ:AV0Z20600510
Keywords : nanofibre * electrospinning * polymer solution * viscosity ratio * electric field
Subject RIV: BK - Fluid Dynamics

Electrospinning produces nanofibre sheets from polymer solutions under high electric field. Rheological properties of these solutions play a substantial role in a nanofibre formation simultaneously with properties of polymers and solvents applied. This contribution aims at a determination of dependence of shear viscosity of polyvinylbuthyral (PVB) on the intensity of electric field to which PVB solutions are exposed. PVB was dissolved consecutively in a series of solvents as 10% wt. solution. It was found that the viscosity ratio (viscosity of a solution in presence of electric field/viscosity of a solution in absence of electric field) depends on the polarity of solvent. This pre-determines the possibility of application of the individual solvents for the process of electrospinning.
Permanent Link: http://hdl.handle.net/11104/0185581