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Polymer microsphere and polymer-ferrite nanocomposite preparation by precipitation from water-in-oil microemulsions

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Abstract

A simple method to encapsulate intramicellar solutes (enzymes, nanoparticles) in polymer microspheres is described. The method involves dissolving a polymer in a minimum amount of solvent. The polymer solution is then added to a large volume of a nonsolvent system containing bis(2-ethylhexyl)sulfosuccinate (AOT) reversed micelles. Immediate precipitation of the dissolved polymer takes place. The precipitation results in the formation of stable microparticles ∼0.1–1 µm in diameter. There is a direct correlation between the internal voidage of the particles and the water content of the micelles. Precipitation also leads to encapsulation of intramicellar solutes, resulting in the formation of microspherical composites.

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Authors and Affiliations

  1. Department of Chemical Engineering, Tulane University, 70118, New Orleans, LA, USA

    S. Banerjee & V. T. John

  2. Department of Chemistry, Tulane University, 70118, New Orleans, LA, USA

    G. L. McPherson

  3. Department of Chemistry, University of New Orleans, 70148, LA, USA

    C. J. O’Connor & Y. S. L. Buisson

  4. U.S. Army Soldier Systems Command, 01760, Natick, MA, USA

    J. A. Akkarra & D. L. Kaplan

Authors
  1. S. Banerjee
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  2. V. T. John
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  3. G. L. McPherson
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  4. C. J. O’Connor
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  5. Y. S. L. Buisson
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  6. J. A. Akkarra
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  7. D. L. Kaplan
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Correspondence to V. T. John.

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Banerjee, S., John, V.T., McPherson, G.L. et al. Polymer microsphere and polymer-ferrite nanocomposite preparation by precipitation from water-in-oil microemulsions. Colloid Polym Sci 275, 930–937 (1997). https://doi.org/10.1007/s003960050168

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  • DOI: https://doi.org/10.1007/s003960050168

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