Abstract

The aim of this study was to synthesize doped polyaniline and carboxylate multi-walled carbon nanotubes-polyaniline nanocomposites with a core-shell morphology, in HCl (PANI/HCl and MWCNT−PANI/HCl, respectively) and camphorsulfonic acid (PANI/CSA and MWCNT−PANI/CSA, respectively) media and to investigate the effects of these media on electrical properties. The synthesized samples were characterized by FTIR, XRD and TGA. They were further confirmed through SEM and TEM indicating that MWCNTs have been uniformly coated with PANI. Microwave absorption measurement at X-band frequencies (8.2‒12.4 GHz) revealed that as the frequency increased, so did the electrical conductivity of the synthesized core-shell nanocomposites. A series of MWCNT−PANI (2, 5 and 10 phr) were also added to epoxy resin. It was found that by increasing the frequency, the electrical permittivity of all samples remains almost constant. The EPs containing 5 and 10 phr of both nanocomposites with core-shell morphology had the lowest and highest electrical permittivity respectively, with the samples also showing low loss.

中文翻译：

---

用核壳形态研究含 MWCNT-PANI 的环氧树脂的电性能：合成和表征

摘要

本研究的目的是在 HCl（分别为 PANI/HCl 和 MWCNT-PANI/HCl）和樟脑磺酸（PANI/CSA 和MWCNT-PANI/CSA）介质，并研究这些介质对电性能的影响。通过FTIR、XRD和TGA对合成的样品进行表征。它们通过 SEM 和 TEM 进一步证实，表明 MWCNT 已均匀地涂覆有 PANI。X波段频率（8.2-12.4 GHz）的微波吸收测量表明，随着频率的增加，合成的核壳纳米复合材料的电导率也增加。还向环氧树脂中添加了一系列 MWCNT-PANI（2、5 和 10 份）。发现随着频率的增加，所有样品的介电常数几乎保持不变。含有 5 份和 10 份具有核壳形态的两种纳米复合材料的 EP 分别具有最低和最高的介电常数，样品也显示出低损耗。