Abstract
The overall radiation sensitivity in the γ-radiolysis of the natural polymers of lignocellulosic material shows a strong dependence on their composition. Increasing the aromatic component of the polymer in the order of cellulose < xylan < lignin results in lower yields of molecular hydrogen (H2) consistent with the radiolysis of simple organic liquids. The yields of H2 are good indicators of overall radiation decomposition and are found to be 4.19, 1.14, and 0.29 molecules/100 eV for cellulose, xylan, and lignin, respectively. Little effect on H2 yields are seen with change in the crystallinity of cellulose, but a large effects are observed on the degree of the crystallinity of glucose.
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