COMPARISON OF PHOTOACOUSTIC, DIFFUSE-REFLECTANCE AND TRANSMISSION INFRARED-SPECTROSCOPY FOR THE STUDY OF CARBON-FIBERS

被引：23

作者：

YANG, CQ ^{[1
]}

SIMMS, JR ^{[1
]}

机构：

[1] MARSHALL UNIV,DEPT CHEM,HUNTINGTON,WV 25701

来源：

FUEL | 1995年 / 74卷 / 04期

关键词：

CARBON FIBERS; SURFACE ANALYSIS; INFRARED SPECTROSCOPY;

D O I：

10.1016/0016-2361(95)98357-K

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Three infrared spectroscopic methods-photoacoustic, diffuse reflectance and transmission-were evaluated for the qualitative analysis of carbon fibres. Transmission spectra of a potassium bromide (KBr) pellet detect the bulk of a carbon fibre, and are subject to interference by water in the KBr pellet. Extensive dehydration of a KBr pellet at elevated temperatures may cause chemical changes. In contrast, photoacoustic and diffuse reflectance methods are free of water interference. Both methods differentiate the near-surface region of a carbon fibre from its bulk, thus providing information about chemical structures in the near-surface. The photoacoustic, diffuse reflectance and transmission infrared spectra of a carbon fibre have similar band frequencies. Therefore diffuse reflectance and photoacoustic methods can be used for reliable qualitative analysis of carbon fibres.

引用

页码：543 / 548

页数：6

共 34 条

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