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@ARTICLE{Khnhammer:911984,
author = {Kühnhammer, Matthias and Gräff, Kevin and Loran, Edwin
and Soltwedel, Olaf and Löhmann, Oliver and Frielinghaus,
Henrich and von Klitzing, Regine},
title = {{S}tructure formation of {PNIPAM} microgels in foams and
foam films},
journal = {Soft matter},
volume = {18},
number = {48},
issn = {1744-683X},
address = {London},
publisher = {Royal Soc. of Chemistry},
reportid = {FZJ-2022-05214},
pages = {9249-9262},
year = {2022},
abstract = {Responsive aqueous foams are very interesting from a
fundamental point of view and for various applications like
foam flooding or foam flotation. In this study
thermoresponsive microgels (MGs) made from
poly(N-isopropyl-acrylamide) (PNIPAM) with varying
cross-linker content, are used as foam stabilisers. The
foams obtained are thermoresponsive and can be destabilised
by increasing the temperature. The structuring of MGs inside
the foam films is investigated with small-angle neutron
scattering and in a thin film pressure balance. The foam
films are inhomogeneous and form a network-like structure,
in which thin and MG depleted zones with a thickness of ca.
30nm are interspersed in a continuous network of thick MG
containing areas with a thickness of several 100nm. The
thickness of this continuous network is related to the
elastic modulus of the individual MGs, which was determined
by atomic force microscopy indentation experiments. Both,
the elastic moduli and foam film thicknesses, indicate a
correlation to the network elasticity of the MGs predicted
by the affine network model.},
cin = {JCNS-FRM-II / JCNS-1 / JCNS-4 / MLZ},
ddc = {530},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
I:(DE-Juel1)JCNS-1-20110106 / I:(DE-Juel1)JCNS-4-20201012 /
I:(DE-588b)4597118-3},
pnm = {6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ)
(POF4-6G4) / 632 - Materials – Quantum, Complex and
Functional Materials (POF4-632)},
pid = {G:(DE-HGF)POF4-6G4 / G:(DE-HGF)POF4-632},
experiment = {EXP:(DE-MLZ)KWS1-20140101},
typ = {PUB:(DE-HGF)16},
pubmed = {36440620},
UT = {WOS:000891229600001},
doi = {10.1039/D2SM01021F},
url = {https://juser.fz-juelich.de/record/911984},
}