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@ARTICLE{MalodeMolina:187506,
author = {Malo de Molina, Paula and Appavou, Marie-Sousai and
Gradzielski, Michael},
title = {{O}il-in-water microemulsion droplets of {TDMAO}/decane
interconnected by the telechelic {C}18-{EO}150-{C}18:
clustering and network formation},
journal = {Soft matter},
volume = {10},
number = {28},
issn = {1744-6848},
address = {London},
publisher = {Royal Soc. of Chemistry},
reportid = {FZJ-2015-01135},
pages = {5072-5084},
year = {2014},
abstract = {The effect of a doubly hydrophobically end-capped water
soluble polymer (C18-PEO150-C18) on the properties of an
oil-in-water (O/W) droplet microemulsion (R [similar] 2.85
nm) has been studied as a function of the amount of added
telechelic polymer. Macroscopically one observes a
substantial increase of viscosity once a concentration of
[similar]5 hydrophobic stickers per droplet is surpassed and
effective cross-linking of the droplets takes place. SANS
measurements show that the size of the individual droplets
is not affected by the polymer addition but it induces
attractive interactions at low concentration and repulsive
ones at high polymer content. Measurements of the diffusion
coefficient by DLS and FCS show increasing sizes at low
polymer addition that can be attributed to the formation of
clusters of microemulsion droplets interconnected by the
polymer. At higher polymer content the network formation
leads to an additional slow relaxation mode in DLS that can
be related to the rheological behaviour, while the
self-diffusion observed in FCS attains a lower plateau
value, i.e., the microemulsion droplets remain effectively
fixed within the network. The combination of SANS, DLS, and
FCS allows us to derive a self-consistent picture of the
evolution of structure and dynamics of the mixed system
microemulsion/telechelic polymer as a function of the
polymer content, which is not only relevant for controlling
the macroscopic rheological properties but also with respect
to the internal dynamics as it is, for instance, relevant
for the release and transport of active agents.},
cin = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
(München) ; JCNS-FRM-II / Neutronenstreuung ; JCNS-1 /
ICS-1},
ddc = {530},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
I:(DE-Juel1)JCNS-1-20110106 / I:(DE-Juel1)ICS-1-20110106},
pnm = {54G - JCNS (POF2-54G24)},
pid = {G:(DE-HGF)POF2-54G24},
experiment = {EXP:(DE-MLZ)KWS1-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000338644400006},
pubmed = {pmid:24901947},
doi = {10.1039/c4sm00501e},
url = {https://juser.fz-juelich.de/record/187506},
}