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Positioning and Aligning Electrospun PAN Fibers by Conductive and Dielectric Substrate Patterns
Author(s) -
Hellert Christian,
Storck Jan Lukas,
Grothe Timo,
Kaltschmidt Bernhard,
Hütten Andreas,
Ehrmann Andrea
Publication year - 2021
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.202000213
Subject(s) - polyacrylonitrile , electrospinning , materials science , dielectric , nanofiber , electrical conductor , composite material , conductivity , substrate (aquarium) , dielectric loss , polypropylene , polymer , optoelectronics , chemistry , oceanography , geology
During electrospinning, the flying nanofibers can be attracted by conductive areas such as copper tape on a nonconductive substrate, especially in case of magnetic nanofibers. The question arises, however, whether the conductivity or any other physical properties of these areas are responsible for this effect. Here, electrospinning polyacrylonitrile (PAN) on nonconductive polypropylene (PP) substrates is reported, modified with conductive copper tape as well as with diverse coatings with varying dielectric constants. The results show that in case of non‐magnetic PAN fibers, especially BaTiO 3 with its high dielectric constant strongly, attracts the fibers formed during electrospinning, which can be explained by local modification of the electric field due to the introduced dielectric. This process can be used to tailor the nanofiber mat thickness depending on the position.