Colloid and Polymer Science

, Volume 270, Issue 6, pp 563–573 | Cite as

Poly(styrene-b-2-vinylpyridine-1-oxide) diblock copolymers: 3. Microemulsions in water/propan-2-ol/toluene mixtures

  • S. Biggs
  • B. Vincent
Original Contributions

Abstract

Pseudo-ternary phase diagrams have been constructed for the three-component solvent system (toluene+water+propan-2-ol) containing diblock copolymers of poly(styrene-b-2-vinylpyridine-1-oxide). Microemulsions have been shown to form on the water-rich side of the phase diagram, in the region of the phase boundary without polymer. Dynamic light-scattering experiments have led to droplet size values in the region of 100 nm, with the size depending strongly on the propan-2-ol/water concentration, as well as the amount of solubilised toluene in the core. Viscometry experiments have been carried out to measure polymer aggregation numbers in the microemulsion droplets, and interfacial tension measurements have shown that in the absence of propan-2-ol (effectively a cosurfactant) the limiting value of the oil/water interfacial tension, even an saturation adsorption of the copolymer is ∼ 20 mNm−1. However, addition of propan-2-ol reduces the interfacial tension to the very low values generall commensurate with microemulsion formation.

Key words

Diblock copolymers polystyrene-b-poly(vinylpyridine-1-oxide) ternary solvent microemulsions 

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References

  1. 1.
    Reiss G, Nervo J, Rogez D (1977) Amer Chem Soc Polymer Prep 18:329Google Scholar
  2. 2.
    Reiss G, Nervo J (1977) Inf Chim 170:185Google Scholar
  3. 3.
    Reiss G, Nervo J, Rogez D (1977) Polymer Eng Sci 17:634Google Scholar
  4. 4.
    Boutillier J, Candau F (1979) Colloid Polym Sci 257:46Google Scholar
  5. 5.
    candau F, Boutillier J, Tripier F, Wittmann J-C (1979) Polymer 20:1221Google Scholar
  6. 6.
    Candau F, Guenet J-M, Boutillier J, Picot C (1979) Polymer 20:1227Google Scholar
  7. 7.
    Candau S, Boutillier J, Candau F (1979) Polymer 20:1237Google Scholar
  8. 8.
    Ballet F, Debeauvais F, Candau F (1980) Colloid Polym Sci 258:1253Google Scholar
  9. 9.
    Barker MC, Vincent B (1984) Colloids and Surfaces 8:297Google Scholar
  10. 10.
    Marie P, Gallot Y (1977) Chem Rend Acad Sci Pairs Ser C 284:327Google Scholar
  11. 11.
    Marie P, Gallot Y (1979) Makromol Chem 180:1611Google Scholar
  12. 12.
    Gallot Y, Selb J, Marie P, Rameau A (1982) Amer Chem Soc Polymer Prep 23:18Google Scholar
  13. 13.
    Tadros ThF, Lukham PF, Yanaranop C (1989) In: Polymer Association Structures: Microemulsions and Liquid Crystals, El-Nokaly (ed.) MA, Amer Chem Soc Symp Ser 384:22Google Scholar
  14. 14.
    Biggs S, Vincent B, Part 1 of this seriesGoogle Scholar
  15. 15.
    Biggs S, Vincent B, Part 2 of this seriesGoogle Scholar
  16. 16.
    Vonnegut B (1942) Rev Sci Instr 13:6Google Scholar
  17. 17.
    Washburn ER, Beguin AE (1940) J Amer Chem Soc 62:579Google Scholar
  18. 18.
    Biggs S (1990) Ph.D. thesis, BristolGoogle Scholar
  19. 19.
    Unpublished data, to be published elsewhere laterGoogle Scholar

Copyright information

© Steinkopff-Verlag 1992

Authors and Affiliations

  • S. Biggs
    • 1
  • B. Vincent
    • 1
  1. 1.School of ChemistryUniversity of BristolBristolUK

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