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The aging population increased the demand for the development and utilization of bone filling materials. In this study, hydroxyapatite (HAP) and graphene oxide (GO) were introduced into thermoplastic polyurethane (TPU) by melt mixing and electron beam radiation to obtain the new hot melt adhesive (TPU/HAP/GO). The structures and morphologies of the TPU/HAP/GO were analyzed using FTIR, XRD, SEM, BET,...