title: Thermophysical properties of lignocellulose: a cell-scale study down to 41 K.
abstract: Thermal energy transport is of great importance in lignocellulose pyrolysis for biofuels. The thermophysical properties of lignocellulose significantly affect the overall properties of bio-composites and the related thermal transport. In this work, cell-scale lignocellulose (mono-layer plant cells) is prepared to characterize their thermal properties from room temperature down to ∼ 40 K. The thermal conductivities of cell-scale lignocellulose along different directions show a little anisotropy due to the cell structure anisotropy. It is found that with temperature going down, the volumetric specific heat of the lignocellulose shows a slower decreasing trend against temperature than microcrystalline cellulose, and its value is always higher than that of microcrystalline cellulose. The thermal conductivity of lignocellulose decreases with temperature from 243 K to 317 K due to increasing phonon-phonon scatterings. From 41 K to 243 K, the thermal conductivity rises with temperature and its change mainly depends on the heat capacity's change.
authors.affiliation: Department of Mechanical Engineering, 2010 Black Engineering Building, Iowa State University, Ames, IA, 50011, United States of America.
authors.forename: Zhe
authors.initials: Z
authors.lastname: Cheng
authors.affiliation: Department of Mechanical Engineering, 2010 Black Engineering Building, Iowa State University, Ames, IA, 50011, United States of America.
authors.forename: Zaoli
authors.initials: Z
authors.lastname: Xu
authors.affiliation: Department of Foreign Language, Hubei University of Technology, Wuhan, Hubei, 430065, P. R. China.
authors.forename: Lei
authors.initials: L
authors.lastname: Zhang
authors.affiliation: Department of Mechanical Engineering, 2010 Black Engineering Building, Iowa State University, Ames, IA, 50011, United States of America.
authors.forename: Xinwei
authors.initials: X
authors.lastname: Wang
mesh_terms: D003080:Cold Temperature; D008031:Lignin / Q000737:chemistry* / Q000502:physiology; D008855:Microscopy, Electron, Scanning; D019697:Onions / Q000378:metabolism; D013814:Thermal Conductivity
chemical_list: C036909:lignocellulose; D008031:Lignin