Lvov Yuri M, Shchukin Dmitry G, Möhwald Helmuth, Price Ronald R
Institute for Micromanufacturing, Louisiana Tech University, Ruston, Louisiana, USA.
ACS Nano. 2008 May;2(5):814-20. doi: 10.1021/nn800259q.
Halloysite aluminosilicate nanotubes with a 15 nm lumen, 50 nm external diameter, and length of 800 +/- 300 nm have been developed as an entrapment system for loading, storage, and controlled release of anticorrosion agents and biocides. Fundamental research to enable the control of release rates from hours to months is being undertaken. By variation of internal fluidic properties, the formation of nanoshells over the nanotubes and by creation of smart caps at the tube ends it is possible to develop further means of controlling the rate of release. Anticorrosive halloysite coatings are in development and a self-healing approach has been developed for repair mechanisms through response activation to external impacts. In this Perspective, applications of halloysite as nanometer-scale containers are discussed, including the use of halloysite tubes as drug releasing agents, as biomimetic reaction vessels, and as additives in biocide and protective coatings. Halloysite nanotubes are available in thousands of tons, and remain sophisticated and novel natural nanomaterials which can be used for the loading of agents for metal and plastic anticorrosion and biocide protection.
已开发出具有15纳米内腔、50纳米外径和800±300纳米长度的埃洛石铝硅酸盐纳米管，作为一种用于装载、储存和控制释放防腐剂和杀菌剂的包封系统。正在进行基础研究，以实现从数小时到数月的释放速率控制。通过改变内部流体性质、在纳米管上形成纳米壳以及在管端创建智能帽，可以开发出进一步控制释放速率的方法。防腐埃洛石涂层正在研发中，并且已经开发出一种自修复方法，通过对外部冲击的响应激活来实现修复机制。在这篇展望文章中，讨论了埃洛石作为纳米级容器的应用，包括将埃洛石管用作药物释放剂、仿生反应容器以及杀菌剂和防护涂层中的添加剂。埃洛石纳米管的产量达数千吨，仍然是可用于装载金属和塑料防腐及杀菌剂保护剂的精密且新颖的天然纳米材料。
