Vegetable oils are important renewable sources that have been used as alternative feedstocks to petroleum for the synthesis of polyols. Polyols are compounds that contain multiple hydroxyl groups in a molecule and are a major component of polyurethanes. One of the oldest problems that many industries face today is corrosion. Polyurethane coatings reduce the rate of corrosion reactions but are not completely impermeable to corrosive agents. Nanoparticles, due to their high surface area and small particle size, can improve the performance of polyurethane coatings and block the penetration of corrosive agents. This research aims to prepare polyurethane coatings using soybean oil-based polyol and investigate the corrosion resistance performance of polyurethane coatings by adding Zinc Molybdate (ZnMoO) nanoparticles. To achieve this goal, a polyol based on soybean oil was synthesized through the ring-opening reaction of Epoxidized soybean oil. Then, polyurethane coatings with 0.5, 1, 1.5, and 2 wt% of ZnMoO nanoparticles were prepared. Characterization of the polyurethane coatings was performed using FTIR, HNMR, and FESEM. The mechanical properties were also examined. Finally, the corrosion resistance activity of these nanocomposites was evaluated using electrochemical impedance spectroscopy and potentiodynamic polarization tests. The results showed that adding 0.5%w/w of ZnMoO nanoparticles can improve the performance of polyurethane coatings against corrosion, as the nanoparticles were uniformly dispersed on the surface of the coating and blocked the penetration of corrosive agents. Therefore, 0.5 wt% ZnMoO nanoparticles can be considered as the optimal amount in this experiment. Moreover, the modified coating with ZnMoO nanoparticles can effectively act against both gram (+) and gram (-) bacteria.

中文翻译：

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钼酸锌在环氧化大豆油可持续聚氨酯涂料的防腐和抗菌特性中的作用


植物油是重要的可再生资源，已被用作合成多元醇的石油替代原料。多元醇是分子中含有多个羟基的化合物，是聚氨酯的主要成分。当今许多行业面临的最古老的问题之一是腐蚀。聚氨酯涂层可降低腐蚀反应速率，但并非完全不渗透腐蚀剂。纳米颗粒由于其高表面积和小粒径，可以改善聚氨酯涂料的性能并阻止腐蚀剂的渗透。本研究旨在利用大豆油基多元醇制备聚氨酯涂料，并通过添加钼酸锌（ZnMoO）纳米粒子研究聚氨酯涂料的耐腐蚀性能。为了实现这一目标，通过环氧化大豆油的开环反应合成了基于大豆油的多元醇。然后，制备了含有 0.5、1、1.5 和 2wt% ZnMoO 纳米粒子的聚氨酯涂层。使用 FTIR、HNMR 和 FESEM 对聚氨酯涂层进行表征。还检查了机械性能。最后，利用电化学阻抗谱和动电位极化测试评估了这些纳米复合材料的耐腐蚀性能。结果表明，添加0.5%w/w的ZnMoO纳米颗粒可以提高聚氨酯涂层的耐腐蚀性能，因为纳米颗粒均匀分散在涂层表面，阻止了腐蚀剂的渗透。因此，0.5wt% ZnMoO纳米颗粒可以被认为是本实验的最佳用量。 此外，含有 ZnMoO 纳米颗粒的改性涂层可以有效对抗革兰氏（+）和革兰氏（-）细菌。