Thermal Stability and Decomposition Kinetics of Polysuccinimide
- 1 School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou, China
- 2 School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou, China
- 3 School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou, China
Abstract
The thermal stability and decomposition kinetics of p olysuccinimide (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 × 10 9 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 p olysuccinimide.
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