Preparation of orientated magnetite/chitosan nano-composite material via in-situ precipitation

Because of biominerals, controlled morphology and unique properties, biominerals become the idea headspring for making organic-inorganic hybrid composite with new patterns. The preferred orientation phenomena of minerals on bioorganics are frequently observed in organisms, this can make the material's performances become better, the human bone is a good example. By now, in most of the prepared nano-composites, the nano-particles dispersed randomly in polymer matrix. In this paper, magnetic/chitosan nano-composite in the magnetic environment was prepared via in-situ precipitation. From the XRD, TEM testing results, it can be concluded that nano magnetite particles arranged orderly in the chitosan matrix, the average diameter of the particles is about 11.3 nm. This provides a new method for preparing three-dimensional magnetic biomaterial, and has broad potential application to the bone repair field.