This title appears in the Scientific Report :
2001
Please use the identifier:
http://dx.doi.org/10.1088/0953-8984/13/41/302 in citations.
Amphiphilic block copolymers in oil-water-surfactant mixtures : efficiency boosting, structure, phase behavior and mechanism
Amphiphilic block copolymers in oil-water-surfactant mixtures : efficiency boosting, structure, phase behavior and mechanism
The effect of amphiphilic block copolymers on the phase behaviour and structure of ternary microemulsions in water, oil and non-ionic surfactant mixtures is reviewed. Recent experiments have revealed that the addition of small amounts of polyethylenepropylene-polyethyleneoxide block copolymer to the...
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Personal Name(s): | Gompper, G. |
---|---|
Richter, D. / Strey, R. | |
Contributing Institute: |
Neutronenstreuung; IFF-NST Theorie II; IFF-TH-II |
Published in: | Journal of physics / Condensed matter, 13 (2001) S. 9055 - 9074 |
Imprint: |
Bristol
IOP Publ.
2001
|
Physical Description: |
9055 - 9074 |
DOI: |
10.1088/0953-8984/13/41/302 |
Document Type: |
Journal Article |
Research Program: |
Polymere, Membranen und komplexe Flüssigkeiten |
Series Title: |
Journal of Physics: Condensed Matter
13 |
Subject (ZB): | |
Publikationsportal JuSER |
The effect of amphiphilic block copolymers on the phase behaviour and structure of ternary microemulsions in water, oil and non-ionic surfactant mixtures is reviewed. Recent experiments have revealed that the addition of small amounts of polyethylenepropylene-polyethyleneoxide block copolymer to the ternary systems leads to a dramatic increase in the volumes of oil and water solubilized into a bicontinuous microemulsion for a given surfactant volume fraction. While phase diagrams directly show the power of the amphiphilic block copolymers as efficiency boosters, the theoretical analysis in terms of bending energy discloses the mechanism for the efficiency boosting as due to the variation of the surfactant film curvature elasticity by tethered polymers in the form of mushrooms at the interface. Neutron scattering experiments employing a high-precision two-dimensional contrast variation technique confirm this picture and demonstrate that the polymer molecules uniformly decorate the surfactant film. |