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Orientation Dependent FT Raman Microspectroscopy on Hemp Fibers
Author(s) -
Kovur S. K.,
Schenzel K.,
Diepenbrock W.
Publication year - 2008
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200850522
Subject(s) - materials science , raman spectroscopy , fiber , cellulose , cellulose fiber , ultimate tensile strength , microscopy , polarization (electrochemistry) , young's modulus , composite material , modulus , raman microspectroscopy , optics , chemistry , physics , organic chemistry
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 (COC) structure units of the cellulose were considered with respect to fiber stress and molecular fiber structures. Intensity ratios R 1 and R 2 calculated on the polarized micro FT Raman spectra of the strained fibers describe the order parameter 〈 P 2 〉 and 〈 P 4 〉 allowing the quantitative determination of the orientation of the structure units (COC) of fiber cellulose with respect to the fiber cell axis.