DWI an der RWTH Aachen e.V. and Institute for Technical and Macromolecular Chemistry of RWTH Aachen University, Pauwelsstrasse 8, D-52056 Aachen, Germany.
ACS Nano. 2011 May 24;5(5):3937-42. doi: 10.1021/nn200436s. Epub 2011 Apr 5.
We report on the preparation of all-silica colloidosomes with adjustable size, shell structure, mechanical strength, and permeability. Our approach is based on the coassembly at the water/oil interface of silica nanoparticles and a silica precursor polymer-hyperbranched polyethoxysiloxane-which acts as a binder for particles as well as an additional interfacial component. Remarkably, the shell of colloidosomes can be fine-tuned from a particle monolayer up to a bilayer bound with a sandwiched thin silica film. This method presents a facile approach toward multiscale production of microcapsules which have a high potential in encapsulation technology and in smart coating formulations.
我们报告了具有可调节尺寸、壳结构、机械强度和渗透性的全硅胶体囊泡的制备。我们的方法基于在水/油界面处二氧化硅纳米粒子和二氧化硅前体聚合物 - 超支化聚乙氧基硅氧烷的共组装，该聚合物既可以作为颗粒的粘合剂，也可以作为额外的界面成分。值得注意的是，胶体囊泡的壳可以从单层颗粒精细调整到由夹有薄二氧化硅膜的双层组成。这种方法为多尺度生产微胶囊提供了一种简便的方法，这些微胶囊在封装技术和智能涂层配方中具有很高的应用潜力。
