The functionalized multi-walled carbon nanotubes (F-MWCNTs) filled polyethylene oxide (PEO) nanocomposites were prepared by casting technique and characterized by scanning electron microscopy (SEM), polarized optical microscopy (POM), thermal gravimetric analysis (TGA) and differential thermal analysis (DTA). The MWCNTs were functionalized by Friedel–Crafts acylation, which introduced aromatic amine groups on the side wall of nanotubes. The SEM micrograph of F-MWCNTs/PEO nanocomposites fractured surfaces indicated that the F-MWCNTs were well dispersed within the PEO matrix. The POM study presented that the neat PEO upon crystallization showed considerable size of crystalline spherulites. The sizes of spherulites decreased with incorporation of F-MWCNTs into the polymer matrix, which might be due to the nucleation role of F-MWCNTs in F-MWCNTs/PEO composite. The DSC analysis showed that the T_m of pure PEO was about 66 °C, which slightly decreased by the incorporation of F-MWCNTs into the polymer matrix. The T_m of 1, 3 and 5 wt% F-MWCNTs/PEO nanocomposites was 65.6, 64 and 63.8 °C, respectively. It was also observed that the thermal stabilities of pure PEO were shifted towards higher temperature when F-MWCNTs were incorporated into the polymer matrix. The TGA analysis represents that pure PEO and 1 wt% of F-MWCNTs/PEO nanocomposite decomposed completely at about 460 °C while thermal stability of 3 and 5 wt% of F-MWCNTs/PEO nanocomposites were shifted towards higher temperature.

通过铸造技术制备了功能化的多壁碳纳米管（F-MWCNTs）填充的聚环氧乙烷（PEO）纳米复合材料，并通过扫描电子显微镜（SEM），偏振光学显微镜（POM），热重分析（TGA）和差示热分析进行了表征。分析（DTA）。MWCNT通过Friedel-Crafts酰化功能化，从而在纳米管的侧壁上引入了芳族胺基。F-MWCNTs / PEO纳米复合材料断裂表面的SEM显微照片表明，F-MWCNTs很好地分散在PEO基体内。POM研究表明，纯净的PEO在结晶时显示出相当大的结晶球晶尺寸。随着F-MWCNTs进入聚合物基体，球晶的尺寸减小，这可能是由于F-MWCNTs / PEO复合材料中F-MWCNTs的成核作用所致。DSC分析显示纯PEO的T _m约为66°C，通过将F-MWCNT掺入聚合物基质中而略有降低。1、3和5 wt％F-MWCNTs / PEO纳米复合材料的T _m分别为65.6、64和63.8°C。还观察到，当将F-MWCNT掺入聚合物基质中时，纯PEO的热稳定性向更高的温度移动。TGA分析表明，纯PEO和1wt％的F-MWCNTs / PEO纳米复合材料在约460℃下完全分解，而3wt％和5wt％的F-MWCNTs / PEO纳米复合材料的热稳定性向较高温度转移。