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Thermal energy transport is of great importance in lignocellulose pyrolysisfor bio-fuels. The thermophysical properties of lignocellulose significantlyaffect the overall properties of bio-composites and the related thermaltransport. In this work, cell-scale lignocellulose (mono-layer plant cells) isprepared to characterize their thermal properties from room temperature down to41 K. The thermal conductivities of cell-scale lignocellulose along differentdirections show a little anisotropy due to the cell structure anisotropy. It isfound that with temperature going down, the volumetric specific heat of thelignocellulose shows a slower decreasing trend against temperature than that ofmicrocrystalline cellulose, and its value is always higher than that ofmicrocrystalline cellulose. The thermal conductivity of lignocellulosedecreases with temperature from 243 K to 317 K due to increasing phonon-phononscatterings. From 41 K to 243 K, the thermal conductivity rises withtemperature and its change mainly depends on the heat capacity's change.

Thermophysical Properties of Lignocellulose: A Cell-scale Study down to 41K