Thermogravimetric analysis of methyl methacrylate-graft-natural rubber
| Autor: | Chen Wang, Sidong Li, Zheng Peng, Kui Xu, Maofang Huang, Xiao-Guang Chen, Puwang Li |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Thermogravimetric analysis
Order of reaction Polymers and Plastics Analytical chemistry General Chemistry Activation energy Surfaces Coatings and Films Thermogravimetry chemistry.chemical_compound chemistry Natural rubber visual_art Polymer chemistry Materials Chemistry visual_art.visual_art_medium Degradation (geology) Thermal stability Methyl methacrylate |
| Zdroj: | Journal of Applied Polymer Science. 85:2952-2955 |
| ISSN: | 1097-4628 0021-8995 |
| DOI: | 10.1002/app.10937 |
| Popis: | The thermal degradations of methyl methacrylate-graft-natural rubber (MG) at different heating rates (B) in nitrogen were studied by thermogravimetric analysis. The results indicate that the thermal degradation of MG in nitrogen is a one-step reaction. The degradation temperatures increase along with the increment of heating rates. The temperature of initial degradation (T0) is 0.448B + 362.4°C, the temperature at maximum degradation rate, that is, the peak temperature on a differential thermogravimetric curve (Tp) is 0.545B + 380.7°C, and the temperature of final degradation (Tf) is 0.476B + 409.4°C. The degradation rate at Tp is not affected by B, and its average value is 48.9%; the degradation rate at Tf is not affected by B either, and its average value is 99.3%. The reaction order (n) is 2.1 and is not affected by B. The reaction activation energy (E) and the frequency factor (A) increase along with B, and the apparent reaction activation energy (E0) is 254.6 kJ/mol. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 85: 2952–2955, 2002 |
| Databáze: | OpenAIRE |
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