Abstract Polyaniline (PAni) doped with dodecylbenzene sulfonic acid was prepared by inverse emulsion polymerization of aniline (Ani) in toluene medium in the presence of unmodified and modified carbon nanotube (CNT). Two different imidazolium based ionic liquids (IL), such as, 1-methyl-3-butyl imidazolium tetrafluorate (bmim.BF4) and (1-(1-methyl-3-imidazole) butane-4-sulfonate) as zwitterion IL (mimbutylSO3) modified with dodecylbenzene sulfonic acid were used to disperse CNT and assist the polymerization of Ani. The presence of IL gave rise to PAni.IL and PAni.IL/CNT hybrid composites with superior electrical conductivity when compared with PAni and PAni/CNT without IL. PAni and the CNT-based hybrids were characterized by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD) scanning electron microscopy (SEM) and thermogravimetric analysis (TGA). 1 wt% of the synthesized hybrids were formulated with epoxy resin and applied on AISI 1020 carbon steel plates to investigate the corrosion resistance of the coating using electrochemical impedance spectroscopy (EIS) technique. The epoxy coating loaded with PAni/CNT hybrid materials displayed outstanding anti-corrosion properties when compared with those loaded with PAni. The hybrid conducting additive prepared in the presence of bmim.BF4 provided the highest anti-corrosion performance of the corresponding epoxy coating. Moreover, the corrosion resistance increased with immersion time. The complex viscosity of the dispersions and dynamic-mechanical analysis (DMA) as well as differential scanning calorimetry (DSC) of the epoxy-based networks were also evaluated.

中文翻译：

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离子液体改性聚苯胺/碳纳米管杂化物作为环氧涂料中的防腐添加剂

摘要 在未改性和改性的碳纳米管（CNT）存在下，通过苯胺（Ani）在甲苯介质中的反相乳液聚合制备了十二烷基苯磺酸掺杂的聚苯胺（PAni）。两种不同的基于咪唑鎓的离子液体 (IL)，例如 1-甲基-3-丁基咪唑鎓四氟 (bmim.BF4) 和 (1-(1-甲基-3-咪唑) 丁烷-4-磺酸盐) 作为两性离子 IL (用十二烷基苯磺酸改性的mimbutylSO3)用于分散CNT并辅助Ani的聚合。与不含 IL 的 PAni 和 PAni/CNT 相比，IL 的存在使 PAni.IL 和 PAni.IL/CNT 杂化复合材料具有优异的导电性。PAni 和基于 CNT 的杂化物通过傅里叶变换红外 (FTIR) 光谱进行表征，X 射线衍射 (XRD) 扫描电子显微镜 (SEM) 和热重分析 (TGA)。用环氧树脂配制 1 wt% 的合成杂化物，并将其涂在 AISI 1020 碳钢板上，以使用电化学阻抗谱 (EIS) 技术研究涂层的耐腐蚀性。与负载 PAni 的环氧树脂涂层相比，负载 PAni/CNT 混合材料的环氧树脂涂层显示出出色的防腐性能。在 bmim.BF4 存在下制备的混合导电添加剂提供了相应环氧树脂涂层的最高防腐性能。此外，随着浸泡时间的延长，耐腐蚀性能增加。