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• W3149972237 endingPage "104488" @default.
• W3149972237 startingPage "104488" @default.
• W3149972237 abstract "Micron-sized poly (methyl methacrylate) (PMMA) with high flammability is widely applied in industries, constructions and transportations. Study on the thermal degradation behaviors of micron-sized PMMA in oxygenous atmosphere, which receives scarce attention to date, can provide valuable guidance for the prevention and mitigation of injuries and damages arising from the micron-sized PMMA dust explosions and fires. In the present study, the thermal degradation characteristics of micron-sized PMMA in air were investigated by thermogravimetry. Deconvolution method using Gauss function coupled with model-free and model-fitting methods was employed to conduct the kinetic modeling. The values of thermodynamic parameters (ΔH, ΔG and ΔS) were estimated. The results indicated that one peak and one shoulder occurred in the mass loss rate (MLR) variations of the micron-sized PMMA degradation in air. The values of MLR at peak and shoulder both decreased with heating rate. Besides, the average value of the MLR varied little with heating rate. The values of MLR at the peak and the average MLR of micron-sized PMMA degradation in air were both less than those of the traditional-sized PMMA degradation in air. The calculated kinetic parameters can be used to well predict the thermal degradation behaviors of micron-sized PMMA in air. Additionally, the micron-sized PMMA in air was easier to decompose than the traditional-sized PMMA in air. Non-spontaneous reactions were involved in the thermo-oxidative degradation of micron-sized PMMA. Besides, with the progressing of thermo-oxidative degradation, less energy was required and pyrolytic products with well-ordered structures may be generated." @default.
• W3149972237 created "2021-04-13" @default.
• W3149972237 creator A5038159375 @default.
• W3149972237 creator A5043901847 @default.
• W3149972237 creator A5069667713 @default.
• W3149972237 date "2021-07-01" @default.
• W3149972237 modified "2023-10-16" @default.
• W3149972237 title "Thermal degradation characteristics, kinetics and thermodynamics of micron-sized PMMA in oxygenous atmosphere using thermogravimetry and deconvolution method based on Gauss function" @default.
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• W3149972237 doi "https://doi.org/10.1016/j.jlp.2021.104488" @default.
• W3149972237 hasPublicationYear "2021" @default.
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