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Impact of non-ionic surfactant chemical structure on morphology and stability of polystyrene nanocomposite latex

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Abstract

Polystyrene (PS) colloid particles in presence of non-ionic surfactant-modified clay particles were prepared by the free-radical polymerization of styrene monomers in emulsion. Three different types of non-ionic surfactants, sorbitan monopalmitate (Span®40), polyethylene glycol octadecyl ether (Brij®S10), and polyoxyethylene (9) nonylphenylether (Igepal®Co-630) were used for the preparation of surfactant-modified clay. High-resolution transmission electron microscopy studies showed that few colloid PS particles with clay mineral layers at the surface were obtained; the particle sizes were observed to be in the micrometer size range, and stable dispersions were obtained when Span®40 and Igepal®Co-630 modified clay minerals were used as stabilizers. The clay mineral particles were observed to be mostly encapsulated by PS latex particles, and a typical morphology was observed when Brij®S10-modified clay was used as a stabilizer. This strategy can be applied to develop stable polymer latex particles via emulsion polymerization.

The formation of stable polystyrene colloidal particles using non-ionic surfactant modified clay mineral

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Acknowledgments

The authors would like to thank the CSIR, DST, and NRF, South Africa, for their financial support.

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Authors and Affiliations

  1. DST/CSIR National Centre for Nanostructured Materials, Council for Scientific and Industrial Research, Pretoria, 0001, South Africa

    Nagi Greesh & Suprakas Sinha Ray

  2. Department of Applied Chemistry, University of Johannesburg, Doornfontein 2028, Johannesburg, South Africa

    Suprakas Sinha Ray

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  1. Nagi Greesh
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  2. Suprakas Sinha Ray
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Correspondence to Suprakas Sinha Ray.

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ESM 1

This section summarizes the physical properties of EFD clay and discussion on emulsion polymerization in presence of pure surfactants.(DOCX 24 kb)

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Greesh, N., Ray, S.S. Impact of non-ionic surfactant chemical structure on morphology and stability of polystyrene nanocomposite latex. Colloid Polym Sci 294, 157–170 (2016). https://doi.org/10.1007/s00396-015-3743-0

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  • DOI: https://doi.org/10.1007/s00396-015-3743-0

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