Influence of Hydroxyapatite Nano-particles on the Mechanical and Tribological Properties of Orthopedic Cement-Based Nano-composites Measured by Nano-indentation and Nano-scratch Experiments

Abstract

The aim of this study was to examine the mechanical and tribological properties of a commercially available bone cement by incorporating nano-sized hydroxyapatite using nano-indentation and nano-scratch experiments. In order to achieve this goal, the nano-composite cement samples with different amounts of commercial nano-hydroxyapatite (HAc), as a bone compatible nano-filler, were prepared via vacuum mixing method. The results indicated that nano-indentation and nano-scratch experiments are acceptable methods for measuring the mechanical and tribological properties of orthopedic cement-based nanocomposites. Moreover, it was found that the nano-composite of 10 wt.% HAc exhibits the optimum performance compared to the other nano-composite samples in terms of mechanical and tribological properties. These findings can play an important role in achieving the goal of clinical and biomechanical function optimization of bone cement, especially in the field of orthopedic surgery.

Investigation on the Influences of Hygrothermal Aging on the Indentation Size Effects and Micro-Indentation Measurements of PMMA. Part I: Experimental Results

“…Polymethyl methacrylate (PMMA) is extensively applied in different industrial areas, such as aircraft, automotive industries, and biomedical materials, for its excellent properties [1][2][3][4][5][6]. For these widely used materials, mechanical strength is the first and foremost characteristic to ensure safety [7][8][9][10][11][12].…”

Assessment of Nano-Indentation Method in Mechanical Characterization of Heterogeneous Nanocomposite Materials Using Experimental and Computational Approaches

“…In this respect, the heterogeneous biomaterials such as polymers reinforced with hydroxyapatite particles, epoxy/silica nanocomposites, Ti and Ti-TiB composites, dental restorative composites, etc. 19–29 have been participated in the mechanical characterization program, while the effect of the material non-homogeneity on the nano-indentation experiment results has not been addressed in these studies. Despite the limited researches about the nano-indentation experiment on heterogeneous materials, this method has been considered valid if different parts of the non-homogeneity were in contact with the indenter during the indentation process 30–32 .…”

Nanomechanical and nanoscratch performance of polystyrene/poly(methyl methacrylate)/multi‐walled carbon nanotubes nanocomposite coating

“…Koumoulos et al have studied nanomechanical and nanotribological properties of polymer composites compounded with MWCNTs and single‐walled carbon nanotubes (SWCNTs) using the nanoindentation and nanoscratch procedure, in which the results exhibited an obvious dependency on the percentage of MWCNTs. Asgharzadeh Shirazi et al investigated the mechanical and tribological properties of bone cement with an addition of nano hydroxyapatite (nHA) using nanoindentation and nanoscratch techniques. The results of their investigations revealed that the amount of 10 wt% nHA can play a vital role in achieving the desired improvement of mechanical and tribological properties of the bone cement containing nHA NPs .…”

“…Asgharzadeh Shirazi et al investigated the mechanical and tribological properties of bone cement with an addition of nano hydroxyapatite (nHA) using nanoindentation and nanoscratch techniques. The results of their investigations revealed that the amount of 10 wt% nHA can play a vital role in achieving the desired improvement of mechanical and tribological properties of the bone cement containing nHA NPs .…”