Fabrication of ceramic nanofibers using polydimethylsiloxane and polyacrylonitrile polymer blends

ABSTRACT Nanofibers with several hundred of nanometers were successfully fabricated using electrospinning process and a mixture of two types of polymers which are: polydimethylsiloxane and polyacrylonitrile as precursors. After stabilization and carbonization at 1000 °C, three phases which are: sili...

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Bibliographic Details
Published in:Journal of applied polymer science 2018-03, Vol.135 (10), p.n/a
Main Authors: Al‐Ajrah, Saja, Lafdi, Khalid, Liu, Yufei, Le Coustumer, Philippe
Format: Article
Language:English
Subjects:
Carbonization
Crystallography
electrospinning
fibers
Materials science
Modulus of elasticity
Nanofibers
nanostructured polymers
Nicalon (trademark)
Phases
Physical properties
Polydimethylsiloxane
Polymer blends
Polymers
Silicon carbide
Skin effect
synthesis and processing techniques
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Summary:ABSTRACT Nanofibers with several hundred of nanometers were successfully fabricated using electrospinning process and a mixture of two types of polymers which are: polydimethylsiloxane and polyacrylonitrile as precursors. After stabilization and carbonization at 1000 °C, three phases which are: silicon carbide (SiC), carbon, and oxy‐SiC were presented. Spectroscopic and microscopic techniques had confirmed the presence of nanocrystalline SiC and turbostratic carbons. These phases formed an intertwined network at the nanometric scale. In addition, the resulted fibers showed a core‐skin effect with skin richer in carbon and a core mainly dominated by silicon‐based phases in the form SiC or SiOC ceramics. A significant improvement was observed in both tensile strength and elastic modulus in these hybrid fibers. In term of crystallography, these nanofibers seem to exhibit similar microstructure that was observed in Nicalon fiber. However, it was difficult to determine the ratio of these phases and their influence on the physical properties of these hybrid fibers. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45967.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.45967