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Orientation Dependent FT Raman Microspectroscopy on Hemp Fibers

FT Raman microspectroscopy was used for polarization experiments on strained hemp fibre cells. The cellulosic plant fibers were macerated with alkaline and enzymatic solutions. Those cleaned and refined single fiber cells were subjected to micro tensile tests as well as to polarization measurements...

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Bibliographic Details
Published in:Macromolecular symposia 2008-05, Vol.265 (1), p.205-210
Main Authors: Kovur, S.K, Schenzel, K, Diepenbrock, W
Format: Article
Language:English
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Summary:FT Raman microspectroscopy was used for polarization experiments on strained hemp fibre cells. The cellulosic plant fibers were macerated with alkaline and enzymatic solutions. Those cleaned and refined single fiber cells were subjected to micro tensile tests as well as to polarization measurements under the FT Raman microscope. Mechanical parameters of the fiber cells (e.g. E-modulus) were determined and changes in orientation of the ---(C---O---C)--- structure units of the cellulose were considered with respect to fiber stress and molecular fiber structures. Intensity ratios R₁ and R₂ calculated on the polarized micro FT Raman spectra of the strained fibers describe the order parameter 〈P₂〉 and 〈P₄〉 allowing the quantitative determination of the orientation of the structure units ---(C---O---C)--- of fiber cellulose with respect to the fiber cell axis.
ISSN:1022-1360
1521-3900
DOI:10.1002/masy.200850522