【摘要】 以正硅酸四乙酯(TEOS)为硅源,制备介孔二氧化硅纳米微球(MSNs),利用原子转移自由基聚合(ATRP)技术在MSNs表面接枝聚甲基丙烯酸二甲氨基乙酯(PDMAEMA),以其作为缓释开关,构成智能纳米容器(MSNs-PDMAEMA)。通过在其中装载防腐蚀剂苯并三唑(BTA)来验证其双重刺激响应性释放性能。采用透射电子显微镜、热重分析、X-射线光电子能谱以及傅里叶变换红外光谱表征了MSNs的结构、形貌及表面功能化过程,并使用荧光光谱仪实时监测BTA在不同p H、温度下的释放过程。结果表明,智能纳米容器掺杂于Si Ox/Zr Oy中实现了BTA的双重响应性释放,形成Cu-BTA复合膜,起到铜金属防腐蚀的作用。更多还原

【Abstract】 The intelligent nanocontainer of 2-( dimethylamino) ethyl methacrylate( PDMAEMA) modified mesoporous silica was prepared by ATRP. On the basis of the nancontainer,the corrosion inhibitor BTA was loaded.The structure and morphology of hybrid material were characterized by means of TEM,TGA,XPS and FT IR. The dual stimuli-responsive release process of BTA was monitored timely by fluorophotometer. The results showed that the smart nanocontainer( MSNs-PDMAEMA) dispersed in Si Ox/ Zr Oyfilm exhibits the effect of the dual stimuliresponsive release,it can form the Cu-BTA composite membrane to protect the metal of copper against the corrosion.更多还原