AgO/PS微胶囊改性环氧基涂层对被微生物污染航油的抗菌性

Antibacterial Effect of AgO/PS Microcapsule Modified Epoxy-based Coating on Aviation Fuel Contaminated by Microorganisms

系统研究了添加AgO/PS微胶囊的环氧基涂层对枯草芽孢杆菌、铜绿假单胞菌和被微生物污染航油的抗菌作用,以及改性涂层的显微组织。结果表明:随涂层中AgO/PS微胶囊含量的增加,改性涂层的抗菌性能逐步增强,当微胶囊添加量略高于1.19%(质量分数)时,改性涂层对枯草芽孢杆菌和铜绿假单胞菌的灭菌率均达到99%以上;添加1.19%(质量分数)AgO/PS微胶囊的涂层,与被微生物污染的航油接触120h后的灭菌率为99.8%;AgO/PS微胶囊均匀分布在涂层基体中,其中的纳米级银离子与细菌中的疏基反应,使细菌丧失分裂增殖能力而死亡,然后银离子又被释放、重复灭菌,具有持久的抗菌效果。

The antibacterial effect of epoxy-based coating with AgO/PS microcapsules on bacillus subtilis,pseudomonas aeruginosa and aviation fuel contaminated by microorganisms had been systematically studied,as well as the microstructure of the modified coating.The results showed that with the increase of AgO/PS microcapsules in the coating,the antibacterial performance of the modified coating gradually increased.When the amount of microcapsules was slightly higher than 1.19%(mass fraction),the sterilization rate of the modified coating to bacillus subtilis and pseudomonas aeruginosa both reached more than 99%.With the addition of 1.19%(mass fraction)AgO/PS microcapsules,the sterilization rate after 120hcontact with microbial-contaminated aviation fuel was 99.8%.AgO/PS microcapsules were uniformly distributed in the coating matrix,and the nano-scale silver ions in the microcapsules reacted with the serogroups in the bacteria,causing the bacteria to lose their ability to divide and proliferate and die.Then the silver ions were released and sterilized repeatedly.AgO/PS microcapsules had a long-lasting antibacterial effect.