Synthesis and characterization of Sr-doped HAp-incorporated polyether ether ketone composite

Abstract

Hydrothermally synthesized undoped and Sr-doped hydroxyapatite-dispersed polyether ether ketone composites has been fabricated by using hot isostatic pressing technique with 5, 10, 15, and 20 wt.% as the dispersoids content. The detailed structural investigation of the fabricated composites has been performed by scanning electron microscope, high-resolution transmission electron microscope, and X-ray diffraction technique that confirmed the uniform dispersion of the dispersoids with the polyether ether ketone matrix. The microindentation measurements show that the mechanical properties of the polyether ether ketone matrix improved remarkably with incorporation of the hydroxyapatite (HAp) particles. The nondestructively evaluated elastic modulus so obtained for the matrix and composites were further validated through finite element analysis. Moreover, the in vitro cytotoxic of the fabricated nanocomposites were also evaluated to assess its potential as a bioactive material.

Phase transition and electrical conversion properties of Ge/Sb nano-multilayer films on flexible substrates

“…The flexible substrate material is the key to the development of flexible PCM, which must have the characteristics of high temperature resistance, strong bending fatigue resistance and insulation [26][27][28][29][30][31] . Flexible polyether ether ketone (PEEK), as an engineering material with excellent performance, has the characteristics of high temperature stability (melting point ~334 °C), good fatigue and bending strength, corrosion resistance, strong insulation and good biocompatibility 32 . Compared with the PET flexible substrate, the thermal deformation temperature of PEEK substrate is 260 °C, and the thermal deformation temperature of PET substrate is only 80 °C, so PEEK substrate has good thermal stability and mechanical properties.…”