Multifunctionality in ultra high molecular weight polyethylene nanocomposites with reduced graphene oxide: Hardness, impact and tribological properties

Polymer ◽  
2021 ◽  
pp. 124475
Author(s):  
Leice G. Amurin ◽  
Marcos D. Felisberto ◽  
Felipe L.Q. Ferreira ◽  
Pedro H.V. Soraes ◽  
Poliane N. Oliveira ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Graphene Oxide ◽  
High Molecular Weight ◽  
Reduced Graphene Oxide ◽  
Tribological Properties ◽  
Reduced Graphene ◽  
Ultra High Molecular Weight

Organometal-catalyzed synthesis of high molecular weight poly-(l-lactic acid) with a covalently attached imidazolium salt: performance-enhanced reduced graphene oxide–PLLA biomaterials

2019 ◽  
Vol 43 (41) ◽  
pp. 16367-16373 ◽  
Author(s):  
Yuri Clemente Andrade Sokolovicz ◽  
Clarissa Martins Leal Schrekker ◽  
Frédéric Hild ◽  
Leonardo de Oliveira Bodo ◽  
Júlia Lacerda Couto ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Graphene Oxide ◽  
Lactic Acid ◽  
High Molecular Weight ◽  
Reduced Graphene Oxide ◽  
Imidazolium Salt ◽  
Reduced Graphene ◽  
High Molecular Weight Poly

Herein, we report on the synthesis of imidazolium salt end-functionalized PLLA (PLLA-IS) and its application in the preparation of reduced graphene oxide–PLLA composites.

scholarly journals The Influence of Irradiation and Accelerated Aging on the Mechanical and Tribological Properties of the Graphene Oxide/Ultra-High-Molecular-Weight Polyethylene Nanocomposites

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Guodong Huang ◽  
Zifeng Ni ◽  
Guomei Chen ◽  
Yongwu Zhao
Keyword(s):  
Molecular Weight ◽  
Graphene Oxide ◽  
High Molecular Weight ◽  
Tribological Properties ◽  
Gamma Ray ◽  
Accelerated Aging ◽  
Artificial Joint ◽  
Promising Candidate ◽  
Mechanical And Tribological Properties ◽  
Ultra High Molecular Weight

Graphene oxide/ultra-high-molecular-weight polyethylene (GO/UHMWPE) nanocomposite is a potential and promising candidate for artificial joint applications. However, after irradiation and accelerated aging, the mechanical and tribological behaviors of the nanocomposites are still unclear and require further investigation. GO/UHMWPE nanocomposites were successfully fabricated using ultrasonication dispersion, ball-milling, and hot-pressing process. Then, the nanocomposites were irradiated by gamma ray at doses of 100 kGy. Finally, GO/UHMWPE nanocomposites underwent accelerated aging at 80°C for 21 days in air. The mechanical and tribological properties of GO/UHMWPE nanocomposites have been evaluated after irradiation and accelerated aging. The results indicated that the incorporation of GO could enhance the mechanical, wear, and antiscratch properties of UHMWPE. After irradiation, these properties could be further enhanced, compared to unirradiated ones. After accelerated aging, however, these properties have been significantly reduced when compared to unirradiated ones. Moreover, GO and irradiation can synergistically enhance these properties.

Tribological properties of alkylated reduced graphene oxide as lubricant additive

2022 ◽  
Vol 165 ◽  
pp. 107273
Author(s):  
Bo Yu ◽  
Kai Wang ◽  
Xianjuan Pang ◽  
Gensheng Wu ◽  
Jibin Pu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Tribological Properties ◽  
Lubricant Additive ◽  
Reduced Graphene
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