Thermal, electrical and surface hydrophobic properties of electrospun polyacrylonitrile nanofibers for structural health monitoring

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Authors
Alarifi, Ibrahim M.
Alharbi, Abdulaziz
Khan, Waseem Sabir
Swindle, Andrew L.
Asmatulu, Ramazan
Advisors
Issue Date
2015-10-14
Type
Article
Keywords
Electrospinning , Polyacrylonitrile (PAN) nanofibers , Oxidation , Carbonization , Physical properties
Research Projects
Organizational Units
Journal Issue
Citation
Alarifi, I.M.; Alharbi, A.; Khan, W.S.; Swindle, A.; Asmatulu, R. Thermal, Electrical and Surface Hydrophobic Properties of Electrospun Polyacrylonitrile Nanofibers for Structural Health Monitoring. Materials 2015, 8, 7017-7031
Abstract

This paper presents an idea of using carbonized electrospun Polyacrylonitrile (PAN) fibers as a sensor material in a structural health monitoring (SHM) system. The electrospun PAN fibers are lightweight, less costly and do not interfere with the functioning of infrastructure. This study deals with the fabrication of PAN-based nanofibers via electrospinning followed by stabilization and carbonization in order to remove all non-carbonaceous material and ensure pure carbon fibers as the resulting material. Electrochemical impedance spectroscopy was used to determine the ionic conductivity of PAN fibers. The X-ray diffraction study showed that the repeated peaks near 42 degrees on the activated nanofiber film were and phases, respectively, with crystalline forms. Contact angle, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and Fourier transform infrared spectroscopy (FTIR) were also employed to examine the surface, thermal and chemical properties of the carbonized electrospun PAN fibers. The test results indicated that the carbonized PAN nanofibers have superior physical properties, which may be useful for structural health monitoring (SHM) applications in different industries.

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Description
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Publisher
MDPI AG
Journal
Book Title
Series
Materials;v.8:no.10
PubMed ID
DOI
ISSN
1996-1944
EISSN