Abstract This study represents the processing, characterization and thermal properties of poly(methylmethacrylate)/multi-walled carbon nanotube (PMMA/MWCNT) and PMMA/MWCNT-OH nanocomposites prepared using the solution casting method. The starting components and nanocomposites were characterized by Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). Morphological studies showed that MWCNT were well dispersed in the polymer matrix. Thermal degradation of nanocomposites occurred in three steps, similar to PMMA. Both MWCNT and MWCNT-OH increased the glass transition temperature of PMMA. The nanocomposite with the highest glass transition temperature of 111 °C was the one containing 0.25 wt% MWCNT-OH. Kissinger and FWO equations were used to analyze the kinetic data obtained at different heating rates. Using these equations, the activation energies were deduced to be 263 and 261 kJ/mol for PMMA in DMF, and 198 and 198 kJ/mol for PMMA in THF.

中文翻译：

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PMMA/改性多壁碳纳米管纳米复合材料的表征和热动力学分析

摘要 本研究展示了使用溶液浇铸法制备的聚甲基丙烯酸甲酯/多壁碳纳米管 (PMMA/MWCNT) 和 PMMA/MWCNT-OH 纳米复合材料的加工、表征和热性能。起始组分和纳米复合材料通过傅里叶变换红外光谱 (FTIR)、热重分析 (TGA)、差示扫描量热法 (DSC) 和扫描电子显微镜 (SEM) 进行表征。形态学研究表明，多壁碳纳米管很好地分散在聚合物基体中。纳米复合材料的热降解分三步进行，类似于 PMMA。MWCNT 和 MWCNT-OH 均提高了 PMMA 的玻璃化转变温度。最高玻璃化转变温度为 111 °C 的纳米复合材料是含有 0.25 wt% MWCNT-OH 的纳米复合材料。Kissinger 和 FWO 方程用于分析在不同加热速率下获得的动力学数据。使用这些方程，可以推导出 DMF 中 PMMA 的活化能分别为 263 和 261 kJ/mol，THF 中 PMMA 的活化能分别为 198 和 198 kJ/mol。