▎ 摘　　要

NOVELTY - Polymer bone scaffold containing in-situ growth magnetic nano-particle-containing graphene (GO-Fe3O4), comprises a polymer matrix and GO-Fe3O4. The Fe3O4 is in-situ growing on surface of graphene oxide (GO). The combination of the two realizes the synergistic strengthening of the mechanical performance of the polymer bone scaffold and the magnetic stimulation function of the cell response. USE - Polymer bone scaffold containing in-situ growth magnetic nano-particle-containing graphene. ADVANTAGE - The polymer bone scaffold uses the in situ growth technology to obtain magnetic nanoparticles on GO, Fe3O4, endows the bone scaffold with magnetic stimulation function and enhances mechanical properties. The composition and structure are designed reasonably, and provides a new approach for stimulating bone regeneration under a magnetic field. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing polymer bone scaffold, which involves: preparing GO-Fe3O4 powder and polymer powder, in which the proportion of GO-Fe3O4 is 5-15 wt.%, and then laser sintering after uniform mixing to obtain composite bone scaffold, where laser power is controlled to be 2-4 W, the scanning speed is 80-120 mm/min, the spot diameter is 50-100 µm, the scanning spacing is 0.5-1.0 mm, and the powder thickness is 100-200 µm.