a novel porous graphene scaffold prepared using freeze-drying technique for orthopedic approaches: fabrication and buckling simulation using gdq method

In this article, a novel bionanocomposite consists of sodium alginate polymerbased graphene nanosheet enhanced incorporating wollastonite containing various amount of graphene nanosheet were produced using freezedrying technique. the bionanocomposites were mechanically and biologically evaluated using tensile strength and biological test. the phase and topological characterization were conducted using scanning electron microscopy (sem) and xray diffraction (xrd) technique. subsequently, based upon eulerbernoulli and timoshenko beam theories (ebt and tbt), the buckling responses of the porous bionanocomposite soft tissue are analyzed corresponding to various graphene amounts. 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 has shown 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.