Robust polyelectrolyte microcapsules reinforced with carbon nanotubes

Carbon nanotubes wrapped with polyanions were incorporated in polyelectrolyte microcapsules across their nanoscale thick walls. The nanotubes were co-precipitated in CaCO3 microparticles that were used as templates for deposition of polyelectrolyte multilayers. Capsules with improved stability and reduced permeability were obtained upon removal of the templates.