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首页> 外文期刊>Polymers for advanced technologies >Thermal decomposition study of poly(methyl methacrylate)/carbon nanofiller composites
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Thermal decomposition study of poly(methyl methacrylate)/carbon nanofiller composites

机译：聚甲基丙烯酸甲酯/碳纳米填料复合材料的热分解研究

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摘要

This work compares the thermal degradation kinetics of neat atactic poly(methyl methacrylate) (a-PMMA), and its composites with fullerene C60 and multiwall carbon nanotubes (MWNT) as revealed by thermal desorption massspectrometry (TDMS), and thermal gravimetry analysis (TGA). TDMS suggests the decrease of thermal stability of PMMA-C60 composite compared to neat PMMA. This result is supported by the increased rate of defect formation in the composite as revealed by the electronic paramagnetic resonance, EPR, technique. On the other hand, TGA shows an increase of thermal degradation temperatures for composite compared to those of neat a-PMMA. The discrepancies between TDMS and TGA data are discussed taking into account the difference of the experimental conditions of the two approaches, i.e. the size of the sample. The parameters which need to be thoroughly controlled in thermal degradation kinetic studies are outlined.
机译：这项工作比较了热解吸质谱（TDMS）和热重分析（TGA）揭示的纯无规立构聚甲基丙烯酸甲酯（a-PMMA）及其与富勒烯C60和多壁碳纳米管（MWNT）的复合材料的热降解动力学）。 TDMS表明，与纯PMMA相比，PMMA-C60复合材料的热稳定性有所降低。如电子顺磁共振EPR技术所揭示的，复合材料中缺陷形成率的提高支持了这一结果。另一方面，与纯α-PMMA相比，TGA显示复合材料的热降解温度升高。讨论了TDMS和TGA数据之间的差异，并考虑了两种方法的实验条件的差异，即样品的大小。概述了在热降解动力学研究中需要彻底控制的参数。

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