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On the electrospinning of PVB solutions
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SYSNO ASEP 0348878 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title On the electrospinning of PVB solutions Author(s) Švrčinová, Petra (UH-J)
Filip, Petr (UH-J) ORCID, RID, SAI
Lubasová, D. (CZ)Number of authors 3 Source Title Conference Proceedings. - Ostrava : TANGER, 2010 - ISBN 978-80-87294-19-2 Pages s. 352-356 Number of pages 5 s. Action NANOCON 2010. International Conference /2./ Event date 12.10.2010-14.10.2010 VEvent location Olomouc Country CZ - Czech Republic Event type EUR Language eng - English Country CZ - Czech Republic Keywords electrospinning ; elongational viscosity ; polyvinylbutyral (PVB) Subject RIV BK - Fluid Dynamics R&D Projects IAA200600703 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z20600510 - UH-J (2005-2011) UT WOS 000286656400061 Annotation Extension rheological characteristics belong to the principal description of polymer jet formation during a process of electrospinning. However, in spite of nearly absence of shear deformation of polymer solutions during the process of their spinnability, it seems that shear electrorheological characteristics can serve as an indicator of good or bad quality of an electrospun template. The experiments were carried out with four polyvinylbutyral (PVB) solutions in concentration of 10 wt%. Shear viscosities in absence (η0) and presence (η) of electric field were measured using a rotational rheometer equipped with an electrorheological cell. It was shown that the good solvents of PVB exhibit an almost constant curve of η/η0 vs. electric field strength, whereas the viscosity curves for the poor solvents exhibit enhancement. This enhancement corresponds to better quality of electrospun templates (obtained for polymer solutions of PVB with poor solvents). Workplace Institute of Hydrodynamics Contact Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Year of Publishing 2011
Number of the records: 1