Abstract Multiwall carbon nanotubes (MWCNTs) and MWCNTs modified by copolymer (P[MMA-IL]) with 1-vinyl-3-ethyl imidazole bromine ionic liquids (IL) and methyl methacrylate (MMA) were incorporated into polyvinylidene fluoride (PVDF) by solution mixing. MWCNTs modified by P[MMA-IL] exhibit better dispersion than that these modified by PMMA. Modified MWCNTs can promote the Tc and Tm of PVDF because of the appearance of β crystalline phase. XRD and FTIR-ATR results confirm that PMMA and MWCNTs cannot induce the β phase, but P[MMA-IL] and MWCNTs can promote the content of β phase due to the ion-dipolar interaction between the imidazolium cation of IL and the >CF2 of PVDF, and the strong induction is brought by the template of MWCNTs. The experimental dielectric data were analyzed within the formalism of complex permittivity and electric modulus. In the frequency spectra of PVDF/P[MMA-IL]/MWCNTs composite, MWS interfacial polarization and electrode polarization result in high value of dielectric permittivity that is related to the large number of the mobile charge carriers. The conductivity relaxation of PVDF/P[MMA-IL]/MWCNTs composite is thermally activated with the hops of charge carriers because P[MMA-IL]/MWCNTs can improve the hops of charge carriers through amorphous and interphase region by ion-dipolar interaction and dipolar ordering reinforced by the template of MWCNTs.

中文翻译：

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MWCNTs和P[MMA-IL]对PVDF复合材料结晶和介电行为的影响

摘要 将多壁碳纳米管 (MWCNTs) 和经共聚物 (P[MMA-IL]) 与 1-乙烯基-3-乙基咪唑溴离子液体 (IL) 和甲基丙烯酸甲酯 (MMA) 改性的 MWCNTs 掺入聚偏二氟乙烯 (PVDF) 中。溶液混合。P[MMA-IL]改性的MWCNTs比PMMA改性的MWCNTs表现出更好的分散性。由于β晶相的出现，改性MWCNTs可以提高PVDF的Tc和Tm。XRD 和 FTIR-ATR 结果证实 PMMA 和 MWCNTs 不能诱导 β 相，但由于 IL 的咪唑鎓阳离子与 >CF2 之间的离子偶极相互作用，P[MMA-IL] 和 MWCNTs 可以促进 β 相的含量PVDF，而强感应是由MWCNTs的模板带来的。在复介电常数和电模量的形式中分析了实验介电数据。在 PVDF/P[MMA-IL]/MWCNTs 复合材料的频谱中，MWS 界面极化和电极极化导致高介电常数值，这与大量移动电荷载流子有关。PVDF/P[MMA-IL]/MWCNTs 复合材料的电导率弛豫是由电荷载流子的跳跃热激活的，因为 P[MMA-IL]/MWCNTs 可以通过离子-偶极相互作用改善电荷载流子通过非晶区和相间区域的跳跃和由 MWCNT 模板增强的偶极排序。