A Novel Porous Graphene Scaffold Prepared Using Freeze-drying Technique for Orthopedic Approaches: Fabrication and Buckling Simulation Using GDQ Method

Abstract

In this article, a novel bio-nanocomposite sample made of sodium alginate polymer, graphene nanosheets and wollastonite powder were produced using freeze-drying technique. The samples were mechanically and biologically evaluated using tensile strength and biological test. The phase and topological characterization were conducted by performing X-ray diffraction (XRD) and scanning electron microscopy (SEM) studies. Subsequently, using Euler-Bernoulli and Timoshenko beam (EBT and TBT) theories, the buckling response of the porous bionanocomposite soft tissue were analyzed with respect to graphene content. In order to solve the governing equations a sufficient numerical solution is proposed. Elastic modulus and mass density of the porous bionanocomposite are extracted from the experimental tests. The obtained results indicated the sample with 1 wt.% graphene sheet showed proper mechanical and biological features. Therefore, the sample with 1 wt.% graphene sheet can be used as potential case for light weight bone substitute applications.