Journal ArticleDOI
Kinetics of thermal degradation of char-forming plastics from thermogravimetry. Application to a phenolic plastic
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TLDR
In this article, a technique was devised for obtaining rate laws and kinetic parameters which describe the thermal degradation of plastics from TGA data, based on the inter-comparison of experiments which were performed at different linear rates of heating.Abstract:
A technique was devised for obtaining rate laws and kinetic parameters which describe the thermal degradation of plastics from TGA data. The method is based on the inter-comparison of experiments which were performed at different linear rates of heating. By this method it is possible to determine the activation energy of certain professes without knowing the form of the kinetic equation. This technique was applied to fiberglass-reinforced CTL 91-LD phenolic resin, where the rate law - (1/we)(dw/dt) = 1018e−55,000/RT [(w - wf)/w0,]5, nr.−1, was found to apply to a major part of the degradation. The equation was successfully tested by several techniques, including a comparison with constant temperature data that were available in the literature. The activation energy was thought to be correct within 10 kcal.read more
Citations
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A Model for the Thermal Response of Polymer Composite Materials with Experimental Verification
TL;DR: In this article, a one-dimensional transient thermal model with an nth order ap proximation for the rate of decomposition of a polymer composite material undergoing decomposition was applied.
Journal ArticleDOI
Kinetic studies on the pyrolysis of chitin and chitosan
TL;DR: In this paper, the thermal degradation of chitin and chitosan was studied by using simultaneous TG and DSC in nitrogen atmosphere and the model-free iso-conversional method was employed to evaluate the activation energies as a function of the extent of degradation.
Journal ArticleDOI
Cure kinetics of the ring‐opening metathesis polymerization of dicyclopentadiene
TL;DR: In this paper, the cure kinetics of polydicyclopentadiene prepared by ring-opening metathesis polymerization with three different concentrations of Grubbs' catalyst were examined with differential scanning calorimetry.
Journal ArticleDOI
Processing thermogravimetric analysis data for isoconversional kinetic analysis of lignocellulosic biomass pyrolysis: Case study of corn stalk
TL;DR: In this paper, a detailed isoconversional kinetic analysis of TGA data obtained from the pyrolysis of corn stalks at five heating rates was presented, and the results have shown that the effective activation energies of corn stalk pyrotechnics vary from 148 to 473 kJ mol−1 when the conversion ranges from 0.05 to 0.85.
Journal ArticleDOI
A thermodynamic and kinetic study of the de- and rehydration of Ca(OH)2 at high H2O partial pressures for thermo-chemical heat storage
TL;DR: In this paper, the authors report on the physical properties such as heat capacity, thermodynamic equilibrium, reaction enthalpy and kinetics of the reversible reaction Ca(OH) 2 ǫ + H 2 O.
References
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Journal ArticleDOI
The Application of Thermoanalytical Techniques to Reaction Kinetics: The Thermogravimetric Evaluation of the Kinetics of the Decomposition of Calcium Oxalate Monohydrate
Eli S. Freeman,Benjamin Carroll +1 more
Journal ArticleDOI
Kinetic analysis of thermogravimetric data
TL;DR: The kinetic analysis of the thermogram, by use of either its exact equation or a more convenient approximation formula, is straightforward in cases of volatilization via simple kinetics as mentioned in this paper.
Journal ArticleDOI
The kinetics of the thermal degradation of polystyrene and polyethylene
David A. Anderson,Eli S. Freeman +1 more
TL;DR: The nonisothermal method of Freeman and Carroll was used to investigate the kinetics of the thermal degradation of polyethylene and polystyrene and the results of this investigation are compared with the kinetic parameters reported by other investigators as mentioned in this paper.
Journal ArticleDOI
The kinetics of the thermal degradation of the synthetic styrenated polyester, laminac 4116
David A. Anderson,Eli S. Freeman +1 more
TL;DR: In this paper, the authors investigated the thermal decomposition of polyester, Laminac 4116, at atmospheric pressure by means of a continuous recording thermobalance and by differential thermal analysis.
Journal ArticleDOI
LXXX. Some new values for the exponential integral
C.A. Coulson,W.E. Duncanson +1 more