Global Kinetic Constants for Thermal Oxidative Degradation of a Cellulosic Paper.
Global Kinetic Constants for Thermal Oxidative
Degradation of a Cellulosic Paper.
Kashiwagi, T.; Nambu, H.
Combustion Institute/Eastern Section. Chemical and
Physical Processes in Combustion. Proceedings. Fall
Technical Meeting, 1991. October 14-16, 1991, Ithaca,
NY, 91/1-4 pp, 1991.
Combustion and Flame, Vol. 88, No. 3-4, 345-368, 1992.
Sponsor:National Aeronautics and Space Administration, Lewis
Research Center, Cleveland, OH
combustion; paper; kinetic constants; kinetics; thermal
oxidative; degradation; ignition; flame spread;
microgravity; pyrolysis; weight loss rate; oxygen
consumption; weight loss
Values of global kinetic constants for pyrolysis,
thermal oxidative degradation, and char oxidation of a
cellulosic paper were determined by a derivative thermal
gravimetric study. The study was conducted at heating
ranges of 0.5, 1, 1.5, 3, and 5 deg C/min in ambient
atmospheres of nitrogen, 0.28%, 1.08%, 5.2% oxygen
concentrtions and air. Sample weight loss rate,
concentrationso of CO, CO2 and H2O in the degradation
products, and oxygen consumption were continuously
measured during the experiment. Values of activation
energy, pre-exponential factor, orders of reaction and
yields of CO, CO2, H2), total hydrocarbons, and char for
each degradation reaction were derived from the results.
Heat of reaction for each reaction was determined by
differential scanning calorimetry. A comparison of the
calcualted CO, CO2, H2O, total hydrocarbons, sample
weight loss rate, oxygen consumption was made with the
measured results using the derived kinetic constants and
accuracy of the values of kinetic constants was