Evaluation of HA/PU composite bio-film in vitro

HA/PU composite film were synthesized and evaluated in vitro.The properties of composite film were characterized by means of IR,XRD,SEM and ICP and analyzed degradation and surface appearance of composite film,meanwhile,determined water absorption and weight loss.The results showed that HA/PU composite film was hydrolyzed in de-ionized water and deposited of Ca,P in SBF solution,this kind of phenomenon made clear that composite film had not only degradation but also bio-activity,pores on the surface of composite film were foundation of cell cultivation,the HA/PU composite film possessed much value in bone restore and substitute materials.