A novel processing scheme for core – shell nano composites using controlled polymer adsorption

Abstract

 A new processing scheme has been developed for the preparation of core-shell structured composite particles that can be used as building blocks for the fabrication of nanocomposites [1]. The scheme is a two stage coating process utilizing controlled polymer adsorption and bridging in which a layer of nano sized particles is bridged onto submicron sized core particles. The coating process is monitored using electrokinetic techniques as well as SEM. The controlled coating process was used also to prepare multilayer nanocomposites. The application of the coating process to concentrated suspensions (15 volume percent) required in ceramic processing was shown to be feasible. Ceramic compacts were successfully prepared using pressure filtration methods and tested for their green density and flexibility.