期刊
COMPOSITES PART B-ENGINEERING
卷 215, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2021.108810
关键词
UHMWPE; Graphene; Nanocomposites; Octa-screw extrusion
资金
- JSPS KAKENHI [JP18H05483]
UHMWPE/graphene nanocomposites synthesized by octa-screw extrusion exhibit significant improvements in strength, wear resistance, and thermal stability compared to pure UHMWPE, as well as increased hydrophilicity and absence of cytotoxicity, making them a potential candidate for joint replacement applications.
Ultra-high molecular weight polyethylene (UHMWPE) is one of the well-established bio-materials for artificial prostheses. In order to improve its wear resistance, graphene incorporated UHMWPE nanocomposites are synthesized by octa-screw extrusion process. The exceptional compounding ability of the process is confirmed by uniform graphene dispersion in the matrix. An 18% improvement in yield strength, superior anti-wear property, 67% increase in crystallinity, and 4% increase in the decomposition temperature as compared to pure UHMWPE is measured. The nanocomposites are also more hydrophilic and show absence of cytotoxicity. The UHMWPE/ graphene nanocomposites prepared by octa-screw extrusion are a potential candidate for joint replacement applications.
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