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@ARTICLE{Schmid:276449,
author = {Schmid, Andreas J. and Schroeder, Ricarda and Eckert,
Thomas and Radulescu, Aurel and Pich, Andrij and Richtering,
Walter},
title = {{S}ynthesis and solution behaviour of stimuli-sensitive
zwitterionic microgels},
journal = {Colloid $\&$ polymer science},
volume = {293},
number = {11},
issn = {1435-1536},
address = {Berlin},
publisher = {Springer},
reportid = {FZJ-2015-06888},
pages = {3305 - 3318},
year = {2015},
abstract = {In this study, we have synthesised small aqueous
zwitterionic microgels as model systems for amphoteric
microgels. Zwitterions exhibit special behaviour due to
defined distance between the opposite charges and provide a
possibility to incorporate an identical number of positive
and negative charges in microgels. Microgels decorated with
zwitterionic groups exhibit unique properties compared with
their analogues functionalized with separately incorporated
oppositely charged co-monomers. In this work, two series of
zwitterionic microgels with N-isopropylacrylamide (NIPAm)
and N-vinylcaprolactam (VCL) as main monomers and various
amounts of
[3-(methacryloylamino)propyl]dimethyl(3-sulfopropyl)
ammonium hydroxide (referred to as sulfobetaine) as
zwitterionic co-monomer have been prepared. We investigated
the effect of zwitterionic co-monomer content on the
swelling behaviour, particle size, size distribution and
volume phase transition temperature of the
NIPAm-co-sulfobetaine microgels using various scattering
methods, as dynamic and static light scattering and
small-angle X-ray/neutron scattering. We found a decrease of
particle size with the amount of sulfobetaine in the
presence of sodium dodecylsulfate, which is contrary to
results published earlier by Das et al. (Chem Mater 20:
7157–7163, 2008) for a similar system of zwitterionic
microgels. The decrease of particle size is related to
co-surfactant behaviour of sulfobetaine in mixtures with
sodium dodecylsulfate. The incorporation of sulfobetaine
also increases the polydispersity of the microgels and
broadens the volume phase transition.},
cin = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
(München) ; JCNS-FRM-II},
ddc = {540},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218},
pnm = {6G15 - FRM II / MLZ (POF3-6G15) / 6G4 - Jülich Centre for
Neutron Research (JCNS) (POF3-623)},
pid = {G:(DE-HGF)POF3-6G15 / G:(DE-HGF)POF3-6G4},
experiment = {EXP:(DE-MLZ)KWS1-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000365308400022},
doi = {10.1007/s00396-015-3749-7},
url = {https://juser.fz-juelich.de/record/276449},
}