Abstract

Fadhil K. Farhan¹, Jafer F. Odah*¹and Ahmed Namah Mohamed²

DOI : http://dx.doi.org/10.13005/ojc/350319

In the current study, biological polymer base polylactic acid (PLA) composites subsidized with biphasic ceramic powder (HAZrO­₂) was prepared and developed using active mechanical mixing method. Hydroxyapatite (HA) with size of 52nm was mixed with zirconium dioxide with size of 42 nm at 1:1 mixing proportion via ceramic ball mill (350 rpm for four hours). The prepared sample was mixed with polymeric powder at (0%, 2%, 4%, 6% and 8%) weight percentage ratio. Afterwards, fluidic mixing and ultrasonic waves methods were used to synthesize the final nanocomposites. Pin-On-Disc method was used to measure wear and the results outputted high advisable nanocomposites with reactance to the cankering compared to PLA alone. Vickers microhardness investigations appear demonstrably acceptable and with exponential enhancement with the incrementing percentage ratio of reinforcing materials. In addition, Young modulus and the absorption energy tests (using Charpy method) showed a high improvement in the mechanical properties of the reinforced n-HAZrO₂ powder. All the results were obtained depending on the homogeneous distribution of the nanopowder using both Scanning Electron Microscope (SEM) and Energy Dispersive X-ray (EDX) techniques.

Bones Replacements; Biomaterials; PLA; Wear

[ View HTML Full Text]