Journal
NANOMATERIALS
Volume 11, Issue 4, Pages -Publisher
MDPI
DOI: 10.3390/nano11040986
Keywords
hydroxyapatite; graphene oxide; nanocomposite; ultra-high shear force; spark plasma sintering; mechanical property
Categories
Funding
- Taichung Veterans General Hospital/National Chi Nan University Joint Research Program [TCVGH-NCNU-1087902]
Ask authors/readers for more resources
The addition of nanomaterials, such as graphene and graphene oxide, can enhance the mechanical properties of hydroxyapatite nanocomposites. By using ultra-high shear force to achieve nano-sized mixtures and a low-temperature spark plasma sintering process, improved mechanical properties can be obtained. The potential applications of these improved r-GO/HA nanocomposites include dentistry, plasma spray-coatings, and orthopedic 3D printing.
The addition of nanomaterials, such as graphene and graphene oxide, can improve the mechanical properties of hydroxyapatite (HA) nanocomposites (NCPs). However, both the dispersive state of the starting materials and the sintering process play central roles in improving the mechanical properties of the final HA NCPs. Herein, we studied the mechanical properties of a reduced graphene oxide (r-GO)/HA NCP, for which an ultra-high shear force was used to achieve a nano-sized mixture through the dispersion of r-GO. A low-temperature, short-duration spark plasma sintering (SPS) process was used to realize high-density, non-decomposing r-GO/HA NCPs with an improved fracture toughness of 97.8% via the addition of 0.5 wt.% r-GO. Greater quantities of r-GO improve the hardness and the fracture strength. The improved mechanical properties of r-GO/HA NCPs suggest their future applicability in biomedical engineering, including use as sintered bodies in dentistry, plasma spray-coatings for metal surfaces, and materials for 3D printing in orthopedics.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available