▎ 摘　　要

45S5 bioactive glass composite scaffolds reinforced with reduced graphene oxide (rGO) were fabricated for the first time by robocasting (direct-writing) technique. Composite scaffolds with 0-3 vol.% content of rGO platelets were printed, and then consolidated by pressureless sintering at 550 or 1000 degrees C in Ar atmosphere. It was found that the addition of rGO platelets up to 1.5 vol.% content enhanced the mechanical performance of the 45S5 bioactive glass scaffolds in terms of strength and toughness. Best performance was obtained for 1 vol.% rGO, which yielded an enhancement of the fracture toughness of similar to 850 and 380% for sintering temperatures of 550 and 1000 degrees C, respectively, while the compressive strength increased by similar to 290 and 75%. rGO addition thus emerges as a promising approach for the fabrication of novel bioglass scaffolds with improved mechanical performance without deterioration of their bioactivity, which may then find use in load-bearing bone tissue engineering applications. (C) 2016 Elsevier Ltd. All rights reserved.