Specific structure, morphology, and properties of polyacrylonitrile (PAN) membranes prepared by needleless electrospinning: Forming hollow fibers

0520372 - MBÚ 2020 RIV NL eng J - Journal Article
Ryšánek, P. - Benada, Oldřich - Tokarský, J. - Syrový, M. - Čapková, P. - Pavlík, J.
Specific structure, morphology, and properties of polyacrylonitrile (PAN) membranes prepared by needleless electrospinning: Forming hollow fibers.
Materials Science & Engineering C-Materials for Biological Applications. Roč. 105, DEC 2019 (2019), č. článku 110151. ISSN 0928-4931. E-ISSN 1873-0191
R&D Projects: GA MŠMT(CZ) LO1509
Research Infrastructure: NanoEnviCz - 90073
Institutional support: RVO:61388971
Keywords : Polyacrylonitrile * Electrospun nanofibers * Hollow fibers
OECD category: Nano-materials (production and properties)
Impact factor: 5.880, year: 2019
Method of publishing: Limited access
https://www.sciencedirect.com/science/article/pii/S0928493119322933?via%3Dihub

Polyacrylonitrile (PAN) membranes have been prepared using needleless electrospinning with wire electrode and characterized by a series of methods HRSEM, XRD, air permeability and area weight measurements in dependence of high voltage and electrode distance. HRSEM analysis revealed the tendency to longitudinal rolling of strip-shaped PAN fibers forming hollow fibers. Combination of XRD analysis and molecular modeling explains this phenomenon as the consequence of the specific crystal structure of PAN fibers, where the isotactic PAN chains are arranged in layers forming belt shaped nanofibers with the strong tendency to roll up longitudinally forming hollow fibers. This effect offers the possibility to create hollow nanofibers by electrospinning with the appropriate choice of structure of polymer chains.
Permanent Link: http://hdl.handle.net/11104/0305052