Effect of high filler loading on polymer/(reduced) graphene oxide nanocomposite coatings

Abstract

Synthesis of polymer/(reduced) graphene oxide (GO) nanocomposites based on copolymers of styrene/n-butyl acrylate and benzyl methacrylate/n-butyl acrylate at unusually high filler loadings of up to 45 wt% have been explored using aqueous emulsion-based approaches. Two approaches were investigated: (i) miniemulsion polymerization in the presence of GO, and (ii) physical mixing of aqueous GO with a polymer latex. Nanocomposite films were prepared from aqueous composite latexes at room temperature by drop casting, with conversion of GO to rGO via thermal treatment. The electrical conductivity values plateau at approximately 102 Sm-1 at high rGO contents in both systems, with higher values for physical mixing than miniemulsion at medium rGO loadings. The thermal conductivities increased with increasing rGO content with the highest values of approx. 0.4 W/mK - physical mixing systems gave higher thermal conductivities than miniemulsions. Increasing GO loading provided stronger but less flexible materials for both systems.

Supplementary files

Article information

Article type
Paper
Submitted
21 Mar 2025
Accepted
28 May 2025
First published
03 Jun 2025
This article is Open Access
Creative Commons BY-NC license

RSC Appl. Interfaces, 2025, Accepted Manuscript

Effect of high filler loading on polymer/(reduced) graphene oxide nanocomposite coatings

B. N. Tran, Y. Fadil, Y. Yao, V. Agarwal and P. B. Zetterlund, RSC Appl. Interfaces, 2025, Accepted Manuscript , DOI: 10.1039/D5LF00078E

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