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A novel PAN/silazane hybrid polymer for processing of carbon-based fibres with extraordinary oxidation resistance

Title data

Riberio, Luis ; Flores, Octavio ; Furtat, Plinio ; Gervais, Christel ; Kempe, Rhett ; Machado, R. A. F. ; Motz, Günter:
A novel PAN/silazane hybrid polymer for processing of carbon-based fibres with extraordinary oxidation resistance.
In: Journal of Materials Chemistry A. Vol. 5 (2017) Issue 2 . - pp. 720-729.
ISSN 2050-7496
DOI: https://doi.org/10.1039/c6ta09293d

Official URL: Volltext

Abstract in another language

A novel hybrid polymer made up of acrylonitrile (AN) and a commercial available oligosilazane (ML33) was developed as a precursor for the processing of carbon-based fibres with extraordinary intrinsic oxidation stability up to 800 °C. While polyacrylonitrile is used as the typical precursor for carbon fibres, a polysilazane derived SiCN ceramic phase should lead to improved oxidation resistance. Thermogravimetric analysis demonstrated that depending on the AN/ML33 ratio the weight loss during pyrolysis is drastically reduced up to 63% due to crosslinking reactions between both components, confirmed by NMR spectroscopy investigations. Unexpectedly, with increasing AN content in the starting composition the thermal treatment up to 1500 °C leads to a change from amorphous C/SiCN to C/Si3N4 nanocomposites confirmed by NMR, XRD and TEM measurements. The homogeneously distributed ceramic phase within the carbon matrix is responsible for the extraordinary intrinsic oxidation stability of this new type of carbon-based fibre.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Inorganic Chemistry II
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Inorganic Chemistry II > Chair Inorganic Chemistry II - Univ.-Prof. Dr. Rhett Kempe
Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Ceramic Materials
Faculties > Faculty of Engineering Science > Chair Ceramic Materials > Chair Ceramic Materials - Univ.-Prof. Dr.-Ing. Walter Krenkel
Profile Fields
Graduate Schools > Bayreuth Graduate School of Mathematical and Natural Sciences (BayNAT)
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Graduate Schools
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
600 Technology, medicine, applied sciences
600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 18 Jan 2018 10:19
Last Modified: 22 Jun 2020 09:24
URI: https://eref.uni-bayreuth.de/id/eprint/41898