Cationic ring-opening polymerization of lactones onto chemically modified single layer graphene oxide

Raymond L.D. Whitby, Lauren C. Smith, Gennaro Dichello, Takahiro Fukuda, Toru Maekawa, Sergey V. Mikhalovsky

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The introduction of the acyl perchlorate groups on the surface of single layer graphene oxide was achieved via the reaction of silver perchlorate to alkyl chloride groups, which were attached to oxygen-containing functionality of single layer graphene oxide. Ring opening polymerization of β-propiolactone, γ-butyrolactone, δ-valerolactone, ε-caprolactone was conducted in a graft-from mechanism to the single layer graphene oxide CH+ 2ClO-4 groups. Without such groups, single layer graphene oxide by itself was found not to support ring-opening polymerization; graphene oxide was not found to exhibit a carbocatalyst effect. Thermogravimetric analysis showed that the grafting efficiency was around 10 wt% for each lactone and improved the oxidative resistance over that of pure single layer graphene oxide. Transmission Electron Microscope images revealed that single layer graphene oxide contained numerous dark contrast nanoparticles across the surface, corresponding to the formation of silver oxide from the use of silver perchlorate.

Original languageEnglish
Pages (from-to)242-246
Number of pages5
JournalMaterials Express
Volume4
Issue number3
DOIs
Publication statusPublished - Jun 2014

Keywords

  • Acyl Perchlorate
  • Graphene Oxide
  • Metal Oxide Nanoparticles
  • Polymer Composites
  • Ring Opening Polymerization
  • Surface Chemistry

ASJC Scopus subject areas

  • Materials Science(all)

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