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Macroporous microspheres and microspheroidal particles from polyhydromethylsiloxane

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Abstract

Polysiloxane macroporous microspheres and macroporous spheroidal particles were generated from a linear siloxane polymer using a simple emulsion procedure. Osmotic pressure produced by nano-dispersed ionic salt solution in polysiloxane droplets formed in aqueous emulsion is proposed as a mechanism of macropore formation. The competition between cross-linking of the polymer and osmotic swelling of the microspheres governs the shape and porosity of the particles which were characterized by SEM, 29Si MAS NMR, mercury intrusion porosimetry, and X-ray computed tomography.

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Acknowledgments

The financial support from the National Science Centre (NCN), grant 2013/11/B/ST5/01615, is highly appreciated. Micro-CT scans were performed in the NanoFun laboratory co-financed by the European Regional Development Fund within the Innovation Economy Operational Program POIG.02.02.00-00-025/09 (help of K. Janiszewska is greatly appreciated).

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Authors and Affiliations

  1. Centre of Molecular and Macromolecular Studies of the Polish Academy of Sciences, Sienkiewicza 112, 90-363, Lodz, Poland

    P. Pospiech, J. Chojnowski, U. Mizerska, W. Fortuniak & S. Slomkowski

  2. Institute of Paleobiology of the Polish Academy of Sciences, Twarda 51/55, 00-818, Warsaw, Poland

    J. Stolarski

Authors
  1. P. Pospiech
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  2. J. Chojnowski
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  3. U. Mizerska
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  4. W. Fortuniak
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  5. S. Slomkowski
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  6. J. Stolarski
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Correspondence to P. Pospiech.

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Pospiech, P., Chojnowski, J., Mizerska, U. et al. Macroporous microspheres and microspheroidal particles from polyhydromethylsiloxane. Colloid Polym Sci 295, 939–944 (2017). https://doi.org/10.1007/s00396-017-4075-z

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  • DOI: https://doi.org/10.1007/s00396-017-4075-z

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