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@ARTICLE{Klemmer:828853,
author = {Klemmer, Helge F. M. and Allgaier, J. and Frielinghaus,
Henrich and Holderer, Olaf and Ohl, Michael},
title = {{I}nfluence of the amphiphilicity profile of copolymers on
the formation of liquid crystalline mesophases in
microemulsions},
journal = {Colloid $\&$ polymer science},
volume = {295},
number = {5},
issn = {0023-2904},
address = {Berlin},
publisher = {Springer},
reportid = {FZJ-2017-02707},
pages = {911–923},
year = {2017},
abstract = {In bicontinuous microemulsions, the increase of the
solubilization capacity of a surfactant, e.g., by the
addition of amphiphilic block copolymers (“boosting
effect”), is normally accompanied by the formation of
liquid crystalline mesophases. We studied a new class of
amphiphilic polymers as “boosters,” so-called gradient
polymers, with a gradual change from the hydrophilic to the
hydrophobic part. Phase diagram measurements and static and
quasielastic neutron scattering experiments reveal that the
polymers cause a stiffening of the amphiphilic film while
simultaneously the saddle splay modulus decreases such that
the formation of liquid crystalline mesophases, normally
present with diblock polymers as “boosters,” is
suppressed, while bicontinuous structures are geometrically
favored. In addition, these findings are supported by
theoretical calculations following the works of Lipowsky.
Hence, gradient amphiphilic polymers not only increase the
efficiency of surfactants but simultaneously suppress the
formation of liquid crystalline phases thereby greatly
increasing their application potential.},
cin = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
(München) ; JCNS-FRM-II / Neutronenstreuung ; JCNS-1 /
JCNS-SNS},
ddc = {540},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
I:(DE-Juel1)JCNS-1-20110106 / I:(DE-Juel1)JCNS-SNS-20110128},
pnm = {6215 - Soft Matter, Health and Life Sciences (POF3-621) /
6G15 - FRM II / MLZ (POF3-6G15) / 6G4 - Jülich Centre for
Neutron Research (JCNS) (POF3-623)},
pid = {G:(DE-HGF)POF3-6215 / G:(DE-HGF)POF3-6G15 /
G:(DE-HGF)POF3-6G4},
experiment = {EXP:(DE-Juel1)SNS-NSE-20150203 / EXP:(DE-MLZ)KWS1-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000399706800019},
doi = {10.1007/s00396-017-4080-2},
url = {https://juser.fz-juelich.de/record/828853},
}