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Thermal Stability and Decomposition Kinetics of Polysuccinimide

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DOI: 10.4236/ajac.2013.412091    3,273 Downloads   4,762 Views   Citations

ABSTRACT

The thermal stability and decomposition kinetics of polysuccinimide (PSI) were investigated using analyzer DTG-60 under high purity nitrogen atmosphere at different heating rates (3, 6, 9, 12 K/min). The thermal decomposition mechanism of PSI was determined by Coats-Redfern method. The kinetic parameters such as activation energy (E), pre-exponential factor (A) and reaction order (n) were calculated by Flynn-Wall-Ozawa and Kissinger methods. The results show that the thermal decomposition of PSI under nitrogen atmosphere mainly occurs in the temperature range of 619.15-693.15 K, the reaction order (n) was , the activation energy (E) and pre-exponential factor (A) were obtained to be 106.585 kJ/mol and 4.644 × 109 min-1, the integral and differential forms of the thermal decomposition mechanism of PSI were found to be and , respectively. The results play an important role in understanding the thermodynamic properties of polysuccinimide.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

L. Zhang, M. Huang and C. Zhou, "Thermal Stability and Decomposition Kinetics of Polysuccinimide," American Journal of Analytical Chemistry, Vol. 4 No. 12, 2013, pp. 749-755. doi: 10.4236/ajac.2013.412091.

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