Effect of Particle Size on the Physical and Mechanical Properties of Nano HA/HDPE Bio-Composite for Synthetic Bone Substitute


The effect of using nano particle size of Hydroxyabatite to produce HA/HDPE biocompositeby Hot Pressing technique was studied by investigating the effect of particlesize and production technique on the physical and mechanical properties of the biocompositeat different volume fraction of nano HA powder and different compressionpressures.Nano particle size and Hot Compression technique had great impact on the propertiesby reversing the behavior of the bio composite comparing with that using micro scaleparticle size in some of previous studies .The fracture strength and hardness increasedwith increasing the filler content by more than 200% for strength and 300-400% formicro hardness values , the densities increased with increasing filler contentcompressing pressure where as the porosity decreased.The modification in mechanical properties due to filler particle size and productionprocess enhanced the osteo- conductivity of biomaterial to use in different bone substituteapplications.