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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。
Mesoporous silica nanospheres (MSNs) were prepared by using tetraethyl orthosilicate (TEOS) as the silicon source, and the surface of MSNs was grafted onto the surface of MSNs by atom transfer radical polymerization (ATRP) Ester (PDMAEMA) was used as a slow-release switch to form a smart nano-container (MSNs-PDMAEMA). The double stimulation responsive release performance was verified by loading the corrosion inhibitor benzotriazole (BTA) therein. The structure, morphology and surface functionalization of MSNs were characterized by transmission electron microscopy, thermogravimetric analysis, X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. Fluorescence spectroscopy was used to monitor the stability of BMS at different p H, temperature Release process. The results show that the smart nano-container doped with Si Ox / Zr Oy to achieve the dual responsive release of BTA, the formation of Cu-BTA composite film, play a copper metal anti-corrosion effect.