Improved Mechanical Properties of Ultra-High Shear Force Mixed Reduced Graphene Oxide/Hydroxyapatite Nanocomposite Produced Using Spark Plasma Sintering.

Bing-Yen Wang, Steven Hsu, Chia-Man Chou, Tair-I Wu, Vincent K S Hsiao

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Article in Nanomaterials (Basel, Switzerland), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 authors.

Bing-Yen WangDivision of Thoracic Surgery, Department of Surgery, Changhua Christian Hospital, Changhua 500, Taiwan.

Steven HsuSchool of Biomedical Engineering, Colorado State University, Fort Collins, CO 80523, USA.

Chia-Man ChouDivision of Pediatric Surgery, Department of Surgery, Taichung Veterans General Hospital, Taichung 40705, Taiwan.

Tair-I WuDepartment of Materials Engineering, Tatung University, Taipei 10451, Taiwan.

Vincent K S HsiaoDepartment of Applied Materials and Optoelectronic Engineering, National Chi Nan University, Nantou 54561, Taiwan.

Funding

Taichung Veterans General Hospital/National Chi Nan University Joint Research Program Grant Number TCVGH-NCNU-1087902

6 · The paper itself

Abstract

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.

Indexed as

graphene oxidehydroxyapatitemechanical propertynanocompositespark plasma sinteringultra-high shear force

Identifiers

PMID33921280

DOI10.3390/nano11040986

PMCPMC8069644

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