THERMOGRAVIMETRY GAS-CHROMATOGRAPHY MASS-SPECTROMETRY AND THERMOGRAVIMETRY GAS-CHROMATOGRAPHY FOURIER-TRANSFORM INFRARED-SPECTROSCOPY - NOVEL HYPHENATED METHODS IN THERMAL-ANALYSIS

被引:37
作者
MCCLENNEN, WH
BUCHANAN, RM
ARNOLD, NS
DWORZANSKI, JP
MEUZELAAR, HLC
机构
[1] Center for Microanalysis & Reaction Chemistry, University of Utah, Salt Lake City
关键词
D O I
10.1021/ac00068a019
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Two doubly hyphenated, thermogravimetry-based analytical techniques, viz. TG/G-C/MS and TG/GC/IR, are described. A valveless, quartz, heated sample path between TG furnace and GC column minimizes losses of products. Furthermore, combination of a pulsed automated vapor sampling inlet and a transfer line type GC column permits high-speed GC identification of individual TG products while maintaining sufficiently high temporal resolution with the approximately 1-min sampling interval to provide kinetic information about the underlying reaction mechanisms. Example analyses on poly(alpha-methylstyrene), a styrene-isoprene block copolymer, and wood demonstrate the techniques' capability for monitoring specific minor products and isomers.
引用
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页码:2819 / 2823
页数:5
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