Ambient-temperature waterborne polymer/rGO nanocomposite films

effect of rGO distribution on electrical conductivity

Yasemin Fadil, Le N. M. Dinh, Monique O. Y. Yap, Rhiannon P. Kuchel, Yin Yao, Taro Omura, Ulises A. Aregueta-Robles, Ning Song, Shujuan Huang, Florent Jasinski, Thickett Thickett, Hideto Minami, Vipul Agarwal, Per B. Zetterlund*

*Corresponding author for this work

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Electrically conductive polymer/rGO (reduced graphene oxide) films based on styrene and n-butyl acrylate are prepared by a variety of aqueous latex based routes involving ambient temperature film formation. Techniques based on miniemulsion polymerization using GO as surfactant and "physical mixing" approaches (i.e., mixing an aqueous polymer latex with an aqueous GO dispersion) are employed, followed by heat treatment of the films to convert GO to rGO. The distribution of GO sheets and the electrical conductivity depend strongly on the preparation method, with electrical conductivities in the range 9 × 10-4 to 3.4 × 102 S/m. Higher electrical conductivities are obtained using physical mixing compared to miniemulsion polymerization, which is attributed to the former providing a higher level of self-alignment of rGO into larger linear domains. The present results illustrate how the distribution of GO sheets within these hybrid materials can to some extent be controlled by judicious choice of preparation method, thereby providing an attractive means of nanoengineering for specific potential applications.

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Original languageEnglish
Pages (from-to)48450-48458
Number of pages9
JournalACS Applied Materials and Interfaces
Volume11
Issue number51
DOIs
Publication statusPublished - 25 Dec 2019
Externally publishedYes

Keywords

  • graphene
  • graphene oxide
  • nanocomposite
  • emulsion
  • radical polymerization

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