Microfluidics: A tool to control the degree of polydispersity
This contribution deals with a foam templating route to produce solid monodisperse chitosan foams via microfluidics. We firstly produced a monodisperse liquid foam from a 4 wt % chitosan solution. Subsequently, we cross-linked the chitosan with genipin and freeze-dried the resulting monodisperse foamed hydrogel to obtain solid monodisperse chitosan foams. In order to obtain a desired polydispersity we also used microfluidics, i.e. we produced polydisperse foams with a controlled bubble size distribution by applying a periodic pressure to the gas phase.