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Issue 24, 2018
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Pickering miniemulsion polymerization using graphene oxide: effect of addition of a conventional surfactant

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Abstract

Polystyrene/graphene oxide (PSt/GO) nanocomposite latexes have been prepared by Pickering miniemulsion polymerization in the presence of the conventional surfactant sodium dodecyl sulfate (SDS) in order to investigate its influence on the polymerization mechanism. Miniemulsion polymerization of styrene can be conducted successfully using GO as the sole surfactant, but the polymerization rate is very low. In the presence of SDS, a significant rate enhancement is observed. It has been clarified that the presence of SDS leads to additional nucleation pathways besides monomer droplet nucleation, namely nucleation involving free GO sheets in the aqueous phase as well as homogeneous nucleation. These mechanistic pathways are consistent with the rate enhancement and the increase in molecular weight as well as experimentally observed particle distributions in the presence of SDS. The present results represent a significant step forward in terms of our understanding of the fundamental polymerization mechanism of this Pickering miniemulsion system, which will aid in the preparation of advanced nanocomposite materials based on polymers and graphene (oxide).

Graphical abstract: Pickering miniemulsion polymerization using graphene oxide: effect of addition of a conventional surfactant

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Supplementary files

Article information


Submitted
01 May 2018
Accepted
24 May 2018
First published
25 May 2018

Polym. Chem., 2018,9, 3368-3378
Article type
Paper

Pickering miniemulsion polymerization using graphene oxide: effect of addition of a conventional surfactant

Y. Fadil, F. Jasinski, T. Wing Guok, S. C. Thickett, H. Minami and P. B. Zetterlund, Polym. Chem., 2018, 9, 3368
DOI: 10.1039/C8PY00667A

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