Исследование механических свойств композита на основе сетчатого скэффолда, полученного из сплава TI-6AL-4V методом аддитивных технологий, и поликапролактона

Abstract

The Ti-6Al-4V alloy is widely used in additive manufacturing of implants. However, the main problem in this area is the mismatch of Young's modulus of bone and metal leading to stress shielding and loosening of the implant. To overcome this inconsistency, it was proposed to use scaffolds - three-dimensional porous matrices providing a support for cells to grow. To maintain the balance of biodegradable polycaprolactone decomposition and the bone ingrowth into the scaffold the total stiffness must remain constant. Unmolten powder or partially molten particles stuck inside the scaffold may cause threat to human body. Polymer filling is proposed to have an influence on mechanical properties and keep the unmolten particles inside the scaffold. Therefore, additively manufactured scaffolds of two types with polycaprolactone filling are investigated in the work.