The mixture of poly(propylene-glycol)-block-poly(ethylene-glycol)-block-PPG with C12E5 microemulsion

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  • Soheil Sharifi, Ferdowsi Univ Mashhad, Ferdowsi University Mashhad, Dept Phys, Fac Sci
  • ,
  • Grethe Vestergaard Jensen, Denmark
  • Jan Skov Pedersen
  • Othmar Marti, Univ Ulm, University of Ulm, Inst Expt Phys, Unknown
  • Masoud Amirkhani, Univ Ulm, University of Ulm, Inst Expt Phys, Unknown
We study oil-in-water microemulsions, in particular dispersions of n-decane droplets coated with a monolayer of the surfactant C12E5 in a continuous phase of water. Upon addition of the tri-block poly(propylene-glycol)(PPG)-block-Poly(ethylene-glycol)(PEG)-block-PPG, the depletion interaction between the oil droplets of microemulsion is induced. At constant droplet size, we vary the polymer concentration and there is clear evidence for an increasing depletion interaction of the droplets from structural investigations with small-angle x-ray scattering and photon correlation spectroscopy (PCS). Our results show that the PEG does increase the depletion interaction more than the tri-block PPG-PEG-PPG.
Original languageEnglish
JournalPhysics and Chemistry of Liquids
Volume52
Issue1
Pages (from-to)113-121
Number of pages9
ISSN0031-9104
DOIs
Publication statusPublished - 2 Jan 2014

    Research areas

  • light scattering, SAXS, microemulsion, nano-droplet, SMALL-ANGLE SCATTERING, X-RAY-SCATTERING, COLLOID-POLYMER MIXTURES, BLOCK-COPOLYMER MICELLES, DEPLETION INTERACTIONS, HARD-SPHERES, AOT MICROEMULSION, LIGHT-SCATTERING, BEHAVIOR, ACTIVATION

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