Polyaniline as potential radical scavenger for ultra-high molecular weight polyethylene

Frédéric Addiego, Iulia Mihai, David Marti, Kui Wang, Valérie Toniazzo, David Ruch

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Novel ultra-high molecular weight polyethylene (UHMWPE) composites were processed by micro-extrusion with polyaniline (PANI) as potential reinforcing and radical scavenging agent and with lauryl gallate (LG) as coupling agent. By means of UV-vis spectroscopy, it was found that the presence of PANI reduced at maximum by 27.3% the concentration in free radicals of a 2,2-dimethyl-1-picrylhydrazyl (DPPH) solution in which was immersed the composite. This result was obtained with the UHMWPE/LG/PANI weight composition 89/1/10, which also demonstrated to retain the viscoelastic and tensile properties of neat UHMWPE. The dispersion of PANI micro-particles within the UHMWPE matrix may be an alternative to the stabilization step of crosslinked UHMWPE used in joint prosthesis.

Original languageEnglish
Pages (from-to)196-202
Number of pages7
JournalSynthetic Metals
Volume198
DOIs
Publication statusPublished - 1 Jan 2014
Externally publishedYes

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Keywords

  • Biomaterials
  • Composites
  • Polyaniline
  • Reinforcement
  • UV-vis spectroscopy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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