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Start Over Author "Li, Guanbao" Publisher elsevier bv
6 results on '"Li, Guanbao"'

3. Comparative thermal decomposition kinetic analysis of the biodegradable terpolymer poly(lactide-co-propylene carbonate) applied by various theoretical models

Author

Li Lushui, Yujie Li, Jinmei Lin, Huang Guojia, Li Guanbao, Wang Zhigang, Bo Yang, Maodong Li, and Zhai Wei

Subjects
Thermogravimetric analysis, Materials science, Polymers and Plastics, Organic Chemistry, Thermal decomposition, Kinetics, 02 engineering and technology, Activation energy, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Decomposition, 0104 chemical sciences, chemistry.chemical_compound, Differential scanning calorimetry, chemistry, Propylene carbonate, Physical chemistry, Thermal stability, 0210 nano-technology
Abstract

The thermal stability and non-isothermal decomposition kinetics of the terpolymer poly (lactide-co-propylene carbonate) (PLAPC) were studied by thermogravimetric and derivative thermogravimetric analyses with multiple heating rates (2.5, 5, 10, 20 °C min −1 ) under nitrogen gas atmosphere. The microstructure and molecule thermal transition property of PLAPC were examined by 1 H NMR, FTIR and differential scanning calorimetry (DSC) respectively. The decomposition kinetic parameters of PLAPC were calculated using ‘‘model-free’’ integral method (Flynn-Wall-Ozawa), ‘‘model-free’’ differential method (Kissinger) and ‘‘model-fitting’’ method (Tang). Its average activation energy thus obtained with different methods ranges from 96.62 to 104.91 kJ mol −1 12 kinetic models were employed to check the most probable decomposition mechanism. The results showed R2 model, F1 (A1) model and R3 model are the most probable to fit the decomposition mechanism.

Published
2018

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