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A kinetic and surface study of the thermal decomposition of cellulose powder in inert and oxidizing atmospheres
Author(s) -
Fairbridge C.,
Ross R. A.,
Sood S. P.
Publication year - 1978
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1978.070220217
Subject(s) - inert gas , scanning electron microscope , thermogravimetry , inert , pyrolysis , thermal decomposition , oxidizing agent , decomposition , materials science , cellulose , kinetics , chemical engineering , adsorption , analytical chemistry (journal) , chemistry , inorganic chemistry , composite material , chromatography , organic chemistry , physics , quantum mechanics , engineering
The thermal decomposition of fibrous cellulose powder from 275° to 340°C has been studied by thermogravimetry, scanning electron microscopy, krypton adsorption, and gas‐chromatographic analysis of the gaseous products arising from pyrolysis in various oxidizing and inert atmospheres. The reaction kinetics fit a phase boundary model where the rate is controlled by the movement of an interface through a cylindrical particle and the principal kinetic parameters fit a compensation curve described previously for the decomposition of wood products. An explanation of the physical mechanism of pyrolysis is proposed which is consistent with the observed rate data and the structural changes observed by scanning electron microscopy.