XPS XAES STUDY OF CARBON-FIBERS DURING THERMAL ANNEALING UNDER UHV CONDITIONS

被引：136

作者：

DESIMONI, E

CASELLA, GI

SALVI, AM

机构：

[1] Dipartimento di Chimica, Universitá delia Basilicata, 85100 Potenza

来源：

CARBON | 1992年 / 30卷 / 04期

关键词：

XPS; CARBON KVV AUGER SPECTRA; CARBON FIBERS; HIGH-TEMPERATURE ANNEALING; CARBON SURFACE OXIDES;

D O I：

10.1016/0008-6223(92)90170-2

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

High-modulus, polyacrylonitrile-derived carbon fibres were heated in situ, in the analysis chamber of an XPS spectrometer, from 25-degrees-C to 300-degrees-C, 600-degrees-C. and 800-degrees-C, and then cooled at 25-degrees-C. The fibre status at each temperature step was monitored by analyzing the C1s, O1s, C-KVV, and VB regions. The decrease in concentration of oxygen-containing surface functional groups was presumably responsible for most of the changes in the examined spectral regions. The analysis of the results did not give evidence of any change in the carbon sp2 bonding, and allowed a reasonably accurate line-shape of the C1s region of "oxygen-free" carbon fibres to be obtained.

引用

页码：521 / 526

页数：6

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[31] X-RAY PHOTOELECTRON SPECTROSCOPIC STUDIES OF CARBON-FIBER SURFACES .11. DIFFERENCES IN THE SURFACE-CHEMISTRY AND BULK STRUCTURE OF DIFFERENT CARBON-FIBERS BASED ON POLY(ACRYLONITRILE) AND PITCH AND COMPARISON WITH VARIOUS GRAPHITE SAMPLES [J].