The emulsifying and tribological properties of modified graphene oxide in oil-in-water emulsion

Yinglei Wu, Xiangqiong Zeng, Tianhui Ren, Erik de Vries, Emile van der Heide

Research output: Contribution to journalArticleScientificpeer-review

34 Citations (Scopus)

Abstract

Graphene oxide (GO) was asymmetric chemically modified with myristyltrimethylammonium bromide (TTAB) to get modified graphene oxide (MGO). This MGO was used as an emulsifier and additive in oil-in-water emulsion. The emulsifying tests showed MGO greatly improved the stability of base emulsion and decreased its droplets size. Tribological test results showed that under the boundary lubrication condition with MGO-emulsion, the friction coefficient (COF) and the wear rate of the steel ball were decreased by about 18% and 48% respectively, comparing with base emulsion lubrication. The tribological mechanism of MGO-emulsion could be explained by the strong film-forming ability on the metal surface; the good lubricity of its small droplets; the formed adsorption film, transfer film and tribofilm between the contact surfaces.

Original languageEnglish
Pages (from-to)304-316
Number of pages13
JournalTribology International
Volume105
DOIs
Publication statusPublished - 1 Jan 2017

Keywords

  • Emulsifying property
  • Mechanism
  • Modified graphene oxide
  • Tribological property

Fingerprint Dive into the research topics of 'The emulsifying and tribological properties of modified graphene oxide in oil-in-water emulsion'. Together they form a unique fingerprint.

Cite this