Pyrolysis and combustion kinetics of microcapsules containing carbon nanofibers by thermal analysis-mass spectrometry
- 作者：Luz Sá ; nchez-Silva ; marialuz.sanchez@uclm.es ; Nuria Gutié ; rrez ; Amaya Romero ; Paula Sá ; nchez ; José ; Luis Valverde
- 关键词：Pyrolysis ; Combustion ; Kinetic models ; Microcapsules ; TGA&ndash ; MS
- 刊名：Journal of Analytical and Applied Pyrolysis
- 出版年：2012
- 期刊代码：46_01652370
- 类别：ch
- 出版时间：March, 2012
- 卷：94
- 期：Complete
- 页码：246-252
- 文件大小：603 K
摘要
The thermal properties of microcapsules containing carbon nanofibers (CNFs) suspended in ethyl phenylacetate (EPA) were investigated by thermogravimetric analysis coupled with mass spectrometry (TGA-MS). The pyrolysis of these microcapsules consisted of two stages. During the first one (100-150 掳C), the emissions of aromatic compounds coming from the decomposition of EPA were identified. In the second one (150-290 掳C), NH2-CO coming from primary amide decomposition was mainly detected.
A multiple-step model was used to predict the thermal decomposition of the synthesized microcapsules under both inert and oxidant atmospheres. Furthermore, pyrolysis and combustion kinetic parameters such as pre-exponential factor and activation energy of these microcapsules were estimated by nonlinear regression. An excellent agreement between experimental and predicted data was observed and confirmed from the statistical point of view.