This title appears in the Scientific Report :
2017
Please use the identifier:
http://hdl.handle.net/2128/14804 in citations.
Please use the identifier: http://dx.doi.org/10.1088/1742-6596/862/1/012014 in citations.
The effect of amphiphilic polymers with a continuous amphiphilicity profile on the membrane properties in a bicontinuous microemulsions studied by neutron scattering
The effect of amphiphilic polymers with a continuous amphiphilicity profile on the membrane properties in a bicontinuous microemulsions studied by neutron scattering
Microemulsion systems consisting of oil, water and surfactant have been studied with neutron scattering techniques. The amount of surfactant needed to form a microemulsion can be dramatically reduced by the addition of small amounts of amphiphilic block copolymers (boosting effect). Here, we studied...
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Personal Name(s): | Klemmer, Helge F. M. |
---|---|
Frielinghaus, Henrich / Allgaier, J. / Ohl, Michael / Holderer, Olaf (Corresponding author) | |
Contributing Institute: |
JCNS-FRM-II; JCNS-FRM-II JCNS-SNS; JCNS-SNS Neutronenstreuung; JCNS-1 |
Published in: | Journal of physics / Conference Series, 862 (2017) S. 012014 - |
Imprint: |
Bristol
IOP Publ.
2017
|
DOI: |
10.1088/1742-6596/862/1/012014 |
Document Type: |
Journal Article |
Research Program: |
Jülich Centre for Neutron Research (JCNS) FRM II / MLZ Soft Matter, Health and Life Sciences |
Subject (ZB): | |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1088/1742-6596/862/1/012014 in citations.
Microemulsion systems consisting of oil, water and surfactant have been studied with neutron scattering techniques. The amount of surfactant needed to form a microemulsion can be dramatically reduced by the addition of small amounts of amphiphilic block copolymers (boosting effect). Here, we studied the influence of block copolymers with gradually changing amphiphilicity from hydrophilic to hydrophobic. Small angle neutron scattering (SANS), neutron spin echo spectroscopy (NSE) and phase diagram measurements in combination give access to the elastic properties of the membrane. The underlying NSE experiments for this interpretation rely on smallest changes of the relaxation curves (of ca. 1% steps) for still small changes of the bending rigidity (of ca. 10% steps). This high reliability of the experiments conducted at the SNS-NSE displays the accuracy of the instrument itself and the latest developments of the evaluation software, which were necessary to interpret such tiny changes of the bending rigidity reliably. |