Morphological evolution of nanofibers during electrospinning

Fang, Jian, Wang, Hongxia, Niu, Haitao, Lin, Tong and Wang, Xungai 2008, Morphological evolution of nanofibers during electrospinning, in MAM 2008 : Macro- and Supramolecular Architectures and Materials : Synthesis, Properties and Applications : Proceedings of the 4th International Symposium, Wiley, Dusseldorf, Germany, pp. 171-172.

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Title Morphological evolution of nanofibers during electrospinning
Author(s) Fang, Jian
Wang, Hongxia
Niu, Haitao
Lin, Tong
Wang, Xungai
Conference name The IUPAC-Sponsored International Symposium on Macro- and Supramolecular Architectures and Materials : Synthesis, Properties and Applications (4th : 2008 : Dusseldorf, Germany)
Conference location Dusseldorf, Germany
Conference dates 7-11 Sep. 2008
Title of proceedings MAM 2008 : Macro- and Supramolecular Architectures and Materials : Synthesis, Properties and Applications : Proceedings of the 4th International Symposium
Editor(s) Ritter, Helmut
Geckeler, Kurt E.
Tabatabai, Monir
Publication date 2008
Start page 171
End page 172
Publisher Wiley
Place of publication Dusseldorf, Germany
Summary Electrospinning is a very useful technique to produce polymeric nanofibers. It involves fast-drawing a polymer fluid into nanofibers under a strong electric filed, and depositing randomly on an electrode collector to form non-woven nanofiber mat in most cases [1]. The fibre stretching during electrospinning is a fast and incessant process which can be divided into three consecutive stages: jet initiation, whipping instability and fibre deposition. From the initial jet to dry fibres, the fibre stretching takes place in milliseconds, so it has been hardly so far to observe fiber morphology changes by any normal methods, such as high speed photography [2-5]. In this study, we used a facile and practical approach to realize the observation of nanofiber morphology changes during electrospinning. Through a special collection device with coagulation bath, newly electrospun nanofibers can be solidified at different electro spinning distances, and by associating the fiber morphology with the electrospinning distance (d), the morphological evolution of nanofibers can be established. We used polyacrylonitrile (PAN) and polystyrene (PS) as two model polymers to demonstrate this method in present research. From experimental results, we found the massive jet-thinning happens at the initial stage of the process. The formation of uniform PAN nanofibers (7%) and the beads structure changes on beads-on-string PAN nanofibers (5%) have also been successful observed. Using the same method, we also observed PS nanofiber (10%) morphology changes to understand the beads formation 011 nanofibers during electrospinning process, and how the beads was eliminated when ionic surfactant is added into the PS solution for electrospinning.
Notes Conference website : http://www.chemie.uni-duesseldorf.de/Faecher/Organische_Chemie/OC2/ritter/MAM_08
ISBN 9783000256509
Language eng
Field of Research 100708 Nanomaterials
Socio Economic Objective 970110 Expanding Knowledge in Technology
HERDC Research category E3 Extract of paper
Copyright notice ©2008, Wiley
Persistent URL http://hdl.handle.net/10536/DRO/DU:30019292

Document type: Conference Paper
Collection: Centre for Material and Fibre Innovation
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