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

0520372 - MBÚ 2020 RIV NL eng J - Článek v odborném periodiku
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
Grant CEP: GA MŠMT(CZ) LO1509
Výzkumná infrastruktura: NanoEnviCz - 90073
Institucionální podpora: RVO:61388971
Klíčová slova: Polyacrylonitrile * Electrospun nanofibers * Hollow fibers
Obor OECD: Nano-materials (production and properties)
Impakt faktor: 5.880, rok: 2019
Způsob publikování: Omezený přístup
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.
Trvalý link: http://hdl.handle.net/11104/0305052