Achieving the benefit of synergetic effect using different constituents is an effective approach to design innovative multifunctional composite materials. In this present investigation, a novel anticorrosive epoxy composite coating has been developed based on reduced graphene oxide (rGO) with the polyaniline(PANI)/chitosan(CS) matrix using the in-situ oxidative polymerization. Structure, microstructure, surface characteristics, and the wettability of the developed coatings were analyzed by XRD, FTIR, Raman, XPS, and FE-SEM/EDS techniques. The synthesized ternary PANI/CS/rGO composites exhibited a homogeneous hierarchical morphology with the short rod-like nanostructures, contrary to the morphology of binary PANI/rGO composites. Complete structural analysis results validated the presence of interfacial interaction between the PANI/CS matrix and rGO. Adhesion test results before and after the corrosion confirmed the beneficial role of ternary nanocomposites in improving the adhesion strength between the epoxy and the steel surface. Water contact angle measurement results validated the altered surface hydrophobicity of epoxy coatings upon reinforcing binary and ternary nanocomposite materials. The corrosion test results displayed that the impedance values at the lowest frequency for ternary epoxy composites remain constant at 10⁸ Ω cm² even after the exposure time of 45 days in NaCl solution, confirming a higher corrosion protective performance on steel substrates. These observed properties suggest that the synthesized ternary composite is a potential candidate for corrosion protection applications.

使用不同成分实现协同效应的好处是设计创新多功能复合材料的有效方法。在本研究中，基于还原氧化石墨烯 (rGO) 和聚苯胺 (PANI)/壳聚糖 (CS) 基质使用原位氧化聚合开发了一种新型防腐环氧复合涂层。通过 XRD、FTIR、拉曼、XPS 和 FE-SEM/EDS 技术分析了所开发涂层的结构、微观结构、表面特征和润湿性。合成的三元 PANI/CS/rGO 复合材料表现出具有短棒状纳米结构的均匀分层形态，这与二元 PANI/rGO 复合材料的形态相反。完整的结构分析结果验证了 PANI/CS 基质和 rGO 之间界面相互作用的存在。腐蚀前后的附着力测试结果证实了三元纳米复合材料在提高环氧树脂与钢表面之间的附着强度方面的有益作用。水接触角测量结果验证了环氧树脂涂层在增强二元和三元纳米复合材料时改变的表面疏水性。腐蚀试验结果表明，三元环氧树脂复合材料在最低频率下的阻抗值保持恒定在 10⁸  Ω cm ²即使在 NaCl 溶液中暴露 45 天后，也证实了对钢基材具有更高的防腐蚀性能。这些观察到的特性表明合成的三元复合材料是腐蚀保护应用的潜在候选者。