Objective check if mechanical properties of Nano-apatite(HA)/ Poly(D,L-lactide)(PDLLA) biocomposite is improved by solution-coblending and hot-pressing techniques.Methods HA particles and PDLLA polymer,as two basic compositions of the biocomposite,were firstly dispersed in dimethyl formamide(DMF) dispersant,then the DMF was by inches cleaned out by intensively stirring in 45 oC.The resultant mixture including HA and PDLLA was fallen to pieces,and then pressed at 100oC in hot-pressing machine,finally,thin film of HA/PDLLA composite biomaterials was prepared.Results These results from Transmission Electron Microscopy(TEM) observation showed that HA well-proportioned distribution in PDLLA-matrix bio-composite was obvious with HA contents rising,which suggested that solution co-blending method by DMF dispersant was beneficial to HA decentralization in PDLLA matrix and exhibited symmetrical microstructure in composite films.Mechanical property testing illuminated that tensile modulus,yield ...更多stress and tensile stress of HA/PDLLA composite were improved,which implied that the bonding strength of interface between HA and PDLLA was enhanced.Conclusion These results suggested that technical route of composite preparation employed by us helped to improve mechanical properties of HA/PDLLA bio-composite