Infrared spectroscopy studies of the petroleum pitch carbon fiber—II. The distribution of the oxidation products between the surface and the bulk

Fourier transform infrared photoacoustic spectroscopy (FT-IR/PAS) was used to study the distribution of the oxidation products between the surface and the bulk of the precursor carbon fiber during the stabilization process, and to evaluate the degree of oxidation in the near surface of the stabilize...

Full description

Saved in:
Bibliographic Details
Published inCarbon (New York) Vol. 32; no. 4; pp. 621 - 626
Main Authors Simms, John R., Yang, Charles Q.
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 1994
Elsevier Science
Subjects
Applied sciences
Building materials. Ceramics. Glasses
carbon fiber
Ceramic and carbon fibers
Ceramic industries
Chemical industry and chemicals
Exact sciences and technology
infrared spectroscopy
oxidation
Petroleum pitch
photoacoustic spectroscopy
surface analysis
Technical ceramics
surface analysis
oxidation
carbon fiber
photoacoustic spectroscopy
Petroleum pitch
infrared spectroscopy
Infrared spectrometry
Fourier transformation
Optoacoustical spectrometry
Reaction product
Distribution
Oxidation
Surface analysis
Precursor
Carbon fiber
Online AccessGet full text

Cover

More Information
Summary:Fourier transform infrared photoacoustic spectroscopy (FT-IR/PAS) was used to study the distribution of the oxidation products between the surface and the bulk of the precursor carbon fiber during the stabilization process, and to evaluate the degree of oxidation in the near surface of the stabilized fiber. The distribution of the oxidation products is homogeneous during the first 70 min of the stabilization process. In the last 10 min of the process, however, the near surface of the carbon fiber is completely oxidized, whereas the bulk has a lower degree of oxidation. It was also found that incomplete oxidation in the near surface of a precursor carbon fiber may cause inferior mechanical properties of the fiber. An increase in the rate of temperature increase in the programmed stabilization process reduces the degree of oxidation in both the near surface and the bulk of the precursor carbon fiber. In this research, FT-IR/PAS has demonstrated the ability to differentiate the near surface of a carbon fiber from its bulk. It is a useful technique for the analysis of carbon fibers.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0008-6223
1873-3891
DOI:10.1016/0008-6223(94)90081-7