Destruction thermo-oxydante de certains materiaux fibreux cellulosiques et de leurs composants

The investigation of the oxidative thermal destruction of some new cellulose-type fibrous materials, namely poplar down and down of silkweed is described. The latter are characterized by a high content of amorphous components. The components of the fibres, cellulose, holocellulose, hemicelluloses and lignin, separated by extraction, have also been studied. From the experimental data, the compounds isolated from the original material could be classified according to their thermal stabilities. The influence of the molecular structure on the kinetic parameters of the oxidative thermal destruction has also been studied. The activation energies of the single steps of the thermal reaction have been estimated for each compound isolated.