Abstract：
In this work, graphene oxide (GO) and epoxy-functionalized graphene oxide (GOSi) are chosen as additives and incorporated into epoxy resin (EP) for nanocomposite photo-coating films (GO/EP and GOSi/EP series). Compared to GO/EP, the GOSi/EP nanocomposite demonstrates strong binding and excellent dispersibility, highlighting covalent bonding between GOSi and the epoxy coating. Furthermore, GOSi/EP-based films demonstrated superior thermal stability and adhesion performance on galvanized steel plates. The corrosion performance of the coated galvanized steel is investigated using electrochemical impedance spectroscopy (EIS) and polarization curve analysis (Tafel). The effectiveness of corrosion protection is evaluated based on a combination of photoreactivity, crosslinking density, dispersity, and adhesion properties. Out of all the treated films, the film based on 0.1GOSi/EP exhibited the highest percentage of inhibition (98.89%) and demonstrated superior long-term anticorrosion stability. In addition, the 0.1GOSi/EP based formulation showed remarkable antibacterial activity against S. aureus, resulting in a 92% reduction. This work demonstrates the development of a facile, environmentally friendly functionalized graphene oxide/epoxy photocured film with superior dual functionalities in both anticorrosion and antibacterial properties. These advancements hold promising potential for impactful practical applications.
摘要：
在这项工作中,选择氧化石墨烯（GO）和环氧官能化氧化石墨烯（GOSi）作为添加剂，并掺入环氧树脂（EP）中用于纳米复合材料光涂膜（GO/EP和GOSi/EP系列）。与GO/EP相比，GOSi/EP纳米复合材料具有很强的结合力和优异的分散性，突出GOSi和环氧涂层之间的共价键合。此外，基于GOSi/EP的薄膜在镀锌钢板上表现出优异的热稳定性和粘合性能。使用电化学阻抗谱（EIS）和极化曲线分析（Tafel）研究了涂层镀锌钢的腐蚀性能。基于光反应性的组合来评估腐蚀保护的有效性，交联密度,分散性,和粘合性能。在所有处理过的胶片中，基于0.1GOSi/EP的膜表现出最高的抑制百分比(98.89%),并且表现出优异的长期抗腐蚀稳定性。此外,基于0.1GOSi/EP的配方对金黄色葡萄球菌显示出显着的抗菌活性，减少了92%。这项工作展示了一个简单的发展，环保功能化氧化石墨烯/环氧光固化膜具有优异的双重功能，在防腐和抗菌性能。这些进步为有影响力的实际应用提供了有希望的潜力。
