Hayward Ryan C, Utada Andrew S, Dan Nily, Weitz David A
Division of Engineering and Applied Sciences and Department of Physics, Harvard University, Cambridge, Massachusetts, USA.
Langmuir. 2006 May 9;22(10):4457-61. doi: 10.1021/la060094b.
We investigate the formation of polymer vesicles, or polymersomes, of polystyrene-block-poly(ethylene oxide) diblock copolymers using double emulsion droplets of controlled architecture as templates. To engineer the structure of the polymersomes, it is important to consider the concentration of diblock copolymer in the middle phase of the double emulsion. We describe how the presence of excess polymer can induce a transition from complete wetting to partial wetting of the middle phase, resulting in polymer shells with inhomogeneous thicknesses.
我们使用具有可控结构的双乳液滴作为模板，研究了聚苯乙烯-嵌段-聚（环氧乙烷）二嵌段共聚物的聚合物囊泡（即聚合物胶束）的形成。为了设计聚合物胶束的结构，考虑双乳液中间相中双嵌段共聚物的浓度很重要。我们描述了过量聚合物的存在如何诱导中间相从完全润湿转变为部分润湿，从而导致聚合物壳层厚度不均匀。
