Abstract
The block samples of yucca (Yucca flaccida) carbonized at temperature 350°C were impregnated under vacuum by furfuryl alcohol, which was next polymerized by solution of hydrochloric acid and cross-linked. The impregnated samples of carbonized plant were heat-treated again at 550°C to carbonize the filler. The resultant composites were characterized using a helium gas densitometry, the ultrasonic measurements, and observed with light microscope, as well as with SEM. Various physical parameters: the true density, the bulk porosity, the longitudinal ultrasonic wave velocity and elastic anisotropy were determined. The thermal decomposition of carbonized yucca modified by polyfurfuryl alcohol was investigated at temperature ranging from 20 to 940°C using thermogravimetric analysis (TGA).
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