Polymerization in nonaqueous microemulsions

K. V. Schubert, K. M. Lusvardi, E. W. Kaler

Research output: Contribution to journalArticlepeer-review

39 Scopus citations

Abstract

Nonaqueous microemulsions containing formamide, the anionic surfactant AOT (bis(2-ethylhexyl)sulfosuccinate sodium salt), sodium bromide (NaBr), and either of the monomers hexyl methacrylate or styrene are polymerized at 60°C. For both monomers, the final product is a stable, bluish dispersion of particles of ca. 80 nm diameter. Based on phase behavior studies as a function of NaBr concentration, we describe how a systematic variation of composition and monomer causes changes in reaction rates and latex characteristics. The monomer solubility in the continuous phase plays an important role in determining the final polymer characteristics. Decreasing monomer solubility shifts the mechanism from one similar to solution polymerization to one closer to traditional emulsion polymerization.

Original languageEnglish (US)
Pages (from-to)875-883
Number of pages9
JournalColloid and Polymer Science
Volume274
Issue number9
DOIs
StatePublished - Sep 1996

Keywords

  • Latex
  • Microemulsion
  • Nonaqueous
  • Polymerization

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