Mechanical and physical propreties of plant fibres are dependent on the
orientation of constituent polymers (cellulose, hemicellulose, lignin). Fourier
transform infrared (FTIR) microscopy was used to examine the orientation of
the main plant polymers in transversal and longitudinal direction of the
isolated cell wall of the Arabidopsis thaliana stem. The polarised FTIR
measurements indicated that xylan and glucomannan have parallel orientation
with regard to the orientation of cellulose, as well as lignin