Solubility Study of Fluorinated Polymer and Block-Copolymer in Compressed CO2

Pascal André, Patrick Lacroix-Desmazes, Darlene K. Taylor, Bernard Boutevin

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

Nitroxide-mediated radical polymerization was used to synthesize poly(1,1,2,2-tetrahydroperfluorodecyl acrylate) homopolymer, PFDA, and to
tailor the synthesis of semifluorinated polystyrene-b-PFDA block copolymer, PS-b-PFDA. The solubility of the polymers was investigated in the
solvent carbon dioxide (CO2) using cloud point and light scattering techniques. The solvent quality of CO2 for PFDA homopolymer was shown
to increase with CO2 pressure and this information coupled with the size of the block copolymer species indicated the formation of PS-b-PFDA
micelles. Residual PS homopolymer remained soluble in PS-b-PFDA micelles at low pressure and induced the formation of a second population
of larger aggregates when the solvent quality was tuned.
© 2005 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)263-270
Number of pages8
JournalJournal of Supercritical Fluids
Volume37
Issue number2
Publication statusPublished - 2006

Keywords

  • Fluorinated block copolymer
  • Amphiphilic molecule
  • Compressed carbon dioxide
  • Light scattering
  • Second virial coefficient
  • Micellization

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