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Colloid and Polymer Science

, Volume 274, Issue 8, pp 741–746 | Cite as

Studies on styrene phosphonic acid

  • P. C. Schulz
  • B. S. Fernández-Band
  • B. Vuano
  • M. Palomeque
  • A. L. Allan
Original Contribution

Abstract

Some properties of styrene phosphonic acid (SPA) were studied. The crystals were triclinic, witha=0.6434 nm,b=0.5842 nm,c=2.0338 nm, α=96.17°, β=97.33°, γ=79.65° andZ=4. SPA underwent a change in crystal structure at 78.8°C, the hydrocarbon network became disordered (“liquid-like”) at 138.5°C. Crystals melted at 148.6°C giving a cubic mesophase, then changed to an isotropic liquid at 155.6°C and at 162.13°C SPA underwent decomposition. Values for pK1=2.15 and pK2=7.66 were obtained at 25°C. The water solubility of SPA at several temperatures, and its interaction with surfactant micelles were determined.

Key words

Styrene phosphonic acidcrystals micelle solubilization solubility 

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Copyright information

© Steinkopff Verlag 1996

Authors and Affiliations

  • P. C. Schulz
    • 1
  • B. S. Fernández-Band
    • 1
  • B. Vuano
    • 1
  • M. Palomeque
    • 1
  • A. L. Allan
    • 1
  1. 1.Department of Chemistry and Chemical EngineeringUniversidad Nacional del SurBahia BlancaArgentina

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