Abstract A CO2-responsive coating has been developed by adding a thiourea-containing nanocontainer with pH-response release property into an ethyl cellulose coating. The cumulative release of thiourea in the nanocontainer changes with the pH of aqueous solution, which enabled the release rate of thiourea from the nanocontainer in coating to adapt to the change in corrosiveness of 3.5 wt. % NaCl with different dissolved CO2 content. The results of EIS and immersion experiments showed that this environmental responsive nanocontainer can significantly improve the corrosion resistance of the coating in 3.5 wt. % NaCl solution with and without CO2.

中文翻译：

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基于pH响应机制的CO2响应型防腐乙基纤维素涂层

摘要 通过在乙基纤维素涂层中加入具有pH响应释放特性的含硫脲纳米容器，开发了一种CO2响应涂层。纳米容器中硫脲的累积释放量随水溶液pH值的变化而变化，这使得硫脲从涂料中纳米容器中的释放速率适应3.5wt.%的腐蚀性变化。具有不同溶解 CO2 含量的 % NaCl。EIS 和浸泡实验的结果表明，这种环境响应纳米容器可以显着提高涂层的耐腐蚀性能，重量为 3.5 重量％。含和不含 CO2 的 % NaCl 溶液。