Effect of Pressing on the Infrared Spectra of Single Cotton Fibers

Author:

Chen Runying1,Jakes Kathryn A.1

Affiliation:

1. Department of Apparel, Merchandising, and Interior Design, East Carolina University, Greenville, North Carolina 27858 (R.C.); and Department of Consumer and Textile Sciences, The Ohio State University, Columbus, Ohio 43210 (K.A.J.)

Abstract

Fourier transform infrared spectra of single fibers of cotton and 18% NaOH treated cotton were obtained before and after fiber pressing to investigate the effect of pressing on the sample. Pressing resulted in improved spectral quality in some regions (e.g., OH stretching) and deteriorated spectral quality in other regions (e.g., CH stretching). Second derivatives of these IR spectra reveal alterations in vibration modes. Thin immature cotton was included in this study to provide a comparison to fibers thinned by pressing. Infrared crystallinity indices, i.e., the ratio of A1370/A2900 differ between the pressed and unpressed cotton fibers. Because both quantitative and qualitative changes can result from compression of cotton fibers, caution is required in both selection of the sample preparation method and in interpretation of the infrared spectra.

Publisher

SAGE Publications

Subject

Spectroscopy,Instrumentation

Reference25 articles.

1. Lang P. L., Katon J. E., Bonanno A. S., Pacey G. E., in Infrared Microspectroscopy: Theory and Applications, Messerschmidt R. G., Harthcock M. A., Eds. (Marcel Dekker, Inc., New York, 1988), p. 41.

2. The Development of a Spectral Data Base for the Identification of Fibers by Infrared Microscopy

3. FT-IR Microscopic Analysis of Changing Cellulose Crystalline Structure during Wood Cell Wall Formation

4. Messerschmidt R. G., in Infrared Microspectroscopy: Theory and Applications, Messerschmidt R. G., Harthcock M. A., Eds. (Marcel Dekker, Inc., New York, 1988), p. 12.

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