Morphological study of stabilization and carbonization of polyacrylonitrile/TiO 2 nanofiber mats

Polyacrylonitrile belongs to the most often used precursors for carbon fibers. Using electrospinning, polyacrylonitrile nanofiber mats can be prepared and afterwards stabilized and carbonized to prepare carbon nanofiber mats which, by adding other materials, will be useful for several applications....

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Bibliographic Details
Published in:Journal of engineered fibers and fabrics 2019-01, Vol.14
Main Authors: Sabantina, Lilia, Böttjer, Robin, Wehlage, Daria, Grothe, Timo, Klöcker, Michaela, García-Mateos, Francisco José, Rodríguez-Mirasol, José, Cordero, Tomás, Ehrmann, Andrea
Format: Article
Language:English
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Summary:Polyacrylonitrile belongs to the most often used precursors for carbon fibers. Using electrospinning, polyacrylonitrile nanofiber mats can be prepared and afterwards stabilized and carbonized to prepare carbon nanofiber mats which, by adding other materials, will be useful for several applications. One of these materials is TiO 2 , which has photocatalytic properties and can thus be used as a photocatalyst for photodegradation of dyes. Here, we report on a detailed study of electrospinning, stabilization, and carbonization of electrospun polyacrylonitrile/TiO 2 mats with varying TiO 2 content. Depending on the amount of TiO 2 in the nanofibers, the fiber morphology changes strongly, indicating an upper limit for the preparation of carbon/TiO 2 nanofibers with smooth surface, but offering an even increased inner surface of the rougher carbon/TiO 2 nanofibers with increased TiO 2 content due to better maintenance of the fibrous structure during stabilization.
ISSN:1558-9250
1558-9250
DOI:10.1177/1558925019862242