Changes in the thermophysical properties of microcrystalline cellulose as function of carbonization temperature

Autor:	Dajie Zhang, Yo-Rhin Rhim, Cila Herman, David G. Drewry, Michael Rooney, D. Howard Fairbrother, Dennis C. Nagle
Rok vydání:	2010
Předmět:	Phonon scattering Carbonization chemistry.chemical_element General Chemistry Conductivity Thermal diffusivity Nitrogen Microcrystalline cellulose chemistry.chemical_compound Thermal conductivity chemistry Chemical engineering General Materials Science Physics::Chemical Physics Carbon
Zdroj:	Carbon. 48:31-40
ISSN:	0008-6223
DOI:	10.1016/j.carbon.2009.07.048
Popis:	Thermophysical properties of carbon materials derived from microcrystalline cellulose have been studied under vacuum and compared with earlier measurements conducted under nitrogen to better understand the influence of porosity, composition, microstructure, and atmosphere effects. The effective thermal conductivity in vacuum is lower than that observed in nitrogen primarily due to the conductivity of nitrogen gas. Radiation effects in both atmospheres were determined to be negligible. Reduction of thermal diffusivity in nitrogen was attributed to the effects of nitrogen gas phonon scattering. The trends for electrical and thermal property changes with structure are similar but not identical due to the differences in electron and phonon transport mechanisms.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::03443b66f8fcefcb2921b32cd4480126 https://doi.org/10.1016/j.carbon.2009.07.048 Zobrazit plný text záznamu Full Text from ScienceDirect