Analysis of graded flux fiber and yarn by pyrolysis mass spectrometry and pyrolysis gas chromatography mass spectrometry
1998
Morrison, W.H. | Archibald, D.D.
Pyrolysis mass spectrometry (PyMS) and pyrolysis gas chromatography mass spectrometry (PyGCMS) were used to analyze samples of flax fiber and yarn which had been graded as being of high, medium, and low quality. In-source, low-voltage PyMS spectra were quite similar overall. To identify potential quality markers, we screened mass responses with thresholds for the following criteria: (1) intensity, (2) repeatability, and (3) correlation to quality level. Chemical interpretation of the selected masses suggests the samples may be differentiated based on the levels of pectin, fatty acids, protein, and phenolics. PyGCMS of the graded flax fiber and yarn provided additional information about the identity of some of the selected mass responses. More palmitic acid was detected in the low-quality fiber and yarn samples. Sinapylaldehyde and sinapyl alcohol were present in higher concentrations in the low-quality yarn as compared to the high-quality material. These data suggest that the amounts of cuticular material and waxes are inversely related to quality in both flax fiber and yarn and may be used as markers for certain aspects of flax product quality.
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