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Issue 63, 2020, Issue in Progress
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Fabrication and characterization of silicon oxycarbide fibre-mats via electrospinning for high temperature applications

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Abstract

Electrospinning is an emerging technique for synthesizing micron to submicron-sized polymer fibre supports for applications in energy storage, catalysis, filtration, drug delivery and so on. However, fabrication of electrospun ceramic fibre mats for use as a reinforcement phase in ceramic matrix composites or CMCs for aerospace applications remains largely unexplored. This is mainly due to stringent operating requirements that require a combination of properties such as low mass density, high strength, and ultrahigh temperature resistance. Herein we report fabrication of molecular precursor-derived silicon oxycarbide or SiOC fibre mats via electrospinning and pyrolysis of cyclic polysiloxanes-based precursors at significantly lower weight loadings of organic co-spin agent. Ceramic fibre mats, which were free of wrapping, were prepared by a one-step spinning (in air) and post heat-treatment for crosslinking and pyrolysis (in argon at 800 °C). The pyrolyzed fibre mats were revealed to be amorphous and a few microns in diameter. Four siloxane-based pre-ceramic polymers were used to study the influence of precursor molecular structure on the compositional and morphological differences of cross-linked and pyrolyzed products. Further thermal characterization suggested the potential of electrospun ceramic mats in high temperature applications.

Graphical abstract: Fabrication and characterization of silicon oxycarbide fibre-mats via electrospinning for high temperature applications

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Supplementary files

Article information


Submitted
05 May 2020
Accepted
17 Sep 2020
First published
19 Oct 2020

This article is Open Access

RSC Adv., 2020,10, 38446-38455
Article type
Paper

Fabrication and characterization of silicon oxycarbide fibre-mats via electrospinning for high temperature applications

Z. Ren, C. Gervais and G. Singh, RSC Adv., 2020, 10, 38446
DOI: 10.1039/D0RA04060F

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