Corrosion Resistance Study of Cyclocarboxypropyl Oleic Acid-Doped Polyaniline/Epoxy Composite Coatings.

IF 4.3 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Nanomaterials Pub Date : 2025-09-15 DOI:10.3390/nano15181416

Xinning Xu, Xiaofeng Li, Taihua Zhang, Wei Guo, Yan An, Tao Liu

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Abstract

Corrosion inhibitors can form dense, protective layers on metal surfaces, thereby preventing the penetration of corrosive media and ensuring the long-term safety of industrial equipment and energy facilities. Polyaniline (PANI), renowned for its excellent conductivity and redox activity, not only facilitates the formation of passivation layers on metals but also mitigates pitting corrosion. In this study, a novel doped PANI was synthesized through chemical oxidation using cyclic carboxypropyl oleic acid (CCHOA) as a dopant, and its anti-corrosion properties were evaluated by incorporation into epoxy resin coatings. Scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier-transform infrared spectroscopy (FTIR) analyses confirmed that CCHOA-doped PANI produced a more uniform and compact microstructure with reduced agglomeration. The corrosion resistance and toughness of the epoxy coatings initially improved with increasing CCHOA content, but then slightly declined, which allowed us to determine the optimal doping level for PANI. The ideal concentration was found to be 0.5 mol/L in the epoxy resin matrix.

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环羧基丙基油酸掺杂聚苯胺/环氧复合涂料的耐腐蚀性能研究。

缓蚀剂可以在金属表面形成致密的保护层，从而防止腐蚀介质的渗透，保证工业设备和能源设施的长期安全。聚苯胺（PANI）以其优异的导电性和氧化还原活性而闻名，它不仅能促进金属表面钝化层的形成，还能减轻点蚀。本研究以环羧基丙基油酸（CCHOA）为掺杂剂，通过化学氧化法合成了一种新型掺杂聚苯胺，并将其掺入环氧树脂涂层中，对其防腐性能进行了评价。扫描电镜（SEM）、x射线衍射（XRD）和傅里叶变换红外光谱（FTIR）分析证实，cchoa掺杂的聚苯胺的微观结构更加均匀紧凑，团聚现象减少。随着CCHOA含量的增加，环氧涂层的耐腐蚀性和韧性开始提高，但随后略有下降，这使我们可以确定PANI的最佳掺杂水平。在环氧树脂基体中，理想浓度为0.5 mol/L。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nanomaterials NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

8.50

自引率

9.40%

发文量

3841

审稿时长

14.22 days

期刊介绍： Nanomaterials (ISSN 2076-4991) is an international and interdisciplinary scholarly open access journal. It publishes reviews, regular research papers, communications, and short notes that are relevant to any field of study that involves nanomaterials, with respect to their science and application. Thus, theoretical and experimental articles will be accepted, along with articles that deal with the synthesis and use of nanomaterials. Articles that synthesize information from multiple fields, and which place discoveries within a broader context, will be preferred. There is no restriction on the length of the papers. Our aim is to encourage scientists to publish their experimental and theoretical research in as much detail as possible. Full experimental or methodical details, or both, must be provided for research articles. Computed data or files regarding the full details of the experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material. Nanomaterials is dedicated to a high scientific standard. All manuscripts undergo a rigorous reviewing process and decisions are based on the recommendations of independent reviewers.