Electrical, mechanical and thermal properties of graphene nanoplatelets reinforced UHMWPE nanocomposites

Fahad Alam, M. Choosri, Tejendra K. Gupta, K. M. Varadarajan, D. Choi, S. Kumar

Research output: Contribution to journalArticlepeer-review

67 Scopus citations

Abstract

Here, we report the electrical, mechanical and thermal properties of ultrahigh-molecular-weight polyethylene (UHMWPE) nanocomposites reinforced with 0.1 wt% to 10 wt% of graphene nanoplatelets (GNP). The electrical conductivity of GNP/UHMWPE nanocomposites shows percolation threshold at 3.0 wt% of GNP. A significant increase in electrical conductivity from 10−15 S cm−1 for neat UHMWPE to 10−5 S cm−1 at 3.0 wt% GNP loading of GNP/UHMWPE nanocomposite (i.e. 10 orders of magnitude higher) is due to the formation of an almost three-dimensional conductive network. The highest value of electrical conductivity (1.09 S cm−1) is observed at 10.0 wt% of GNP loading. The elastic modulus and yield strength increase by 30% and 21%, for the addition of 0.5 wt% and 1.0 wt% of GNP, respectively, while fracture toughness and the ultimate tensile strength decrease significantly above 0.5 wt% GNP loading. This study demonstrates the fabrication of GNP/UHMWPE bio-nanocomposites, which exhibit electrical properties useful for smart biomedical implants.
Original languageEnglish (US)
Pages (from-to)82-91
Number of pages10
JournalMaterials Science and Engineering: B
Volume241
DOIs
StatePublished - Feb 1 2019
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2023-09-23

ASJC Scopus subject areas

  • Mechanics of Materials
  • General Materials Science
  • Mechanical Engineering
  • Condensed Matter Physics

Fingerprint

Dive into the research topics of 'Electrical, mechanical and thermal properties of graphene nanoplatelets reinforced UHMWPE nanocomposites'. Together they form a unique fingerprint.

Cite this