Manufacturing process of some 3D printed composite products based on biogenic hydroxyapatite, polylactic acid and graphene nanoplates, intended for bone regeneration
Authors: MIHNEA COSMIN COSTOIU, FLORIN MICULESCU, AURA-CĂTĂLINA MOCANU, ANIȘOARA CÎMPEAN, ANDREEA-MĂDĂLINA PANDELE, NICOLAE DAN BATALU, ȘTEFAN IOAN VOICU, ANDREEA-MARIANA NEGRESCU, VALENTINA MITRAN, AURORA ANTONIAC, AUGUSTIN SEMENESCU, MARIAN MICULESCU
School: National University of Science and Technology POLITEHNICA Bucharest ROMANIA
Country: ROMANIA
e-mail: augustin.semenescu@upb.ro, asemenescu2002@yahoo.com
The invention relates to the manufacturing process of 3D printed scaffold-type composite products based on biogenic hydroxyapatite powder, graphene nanoplates and polylactic acid intended for the personalized reconstruction of bone defects, with modulated physico-chemical properties by controlling the related PLA/HA/GNP ratios, including the preliminary isolation by thermal route of the hydroxyapatite from bovine bones. The porosity of the products with regular geometry is predefined in the 0 – 50% range and of those with random geometry is defined by the dimensional characteristics of the organic fibres.
