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@ARTICLE{Wellert:202946,
author = {Wellert, Stefan and Radulescu, Aurel and Carl, Adrian and
Klitzing, Regine von and Gawlitza, Kornelia},
title = {{E}volution of {S}ize and {S}tructure during the
{P}olymerization {P}rocess: {A} {SANS} {S}tudy on
{EG}-{B}ased {M}icrogels},
journal = {Macromolecules},
volume = {48},
number = {14},
issn = {1520-5835},
address = {Washington, DC},
publisher = {Soc.},
reportid = {FZJ-2015-05069},
pages = {4901 - 4909},
year = {2015},
abstract = {The present study describes the temporary evolution of size
and morphology of thermosensitive and biocompatible microgel
particles based on ethylene glycol (EG). P-MeO2MA-co-OEGMA
particles were synthesized by precipitation polymerization.
The growth of the microgel particles was analyzed at
different reaction times using dynamic light scattering
(DLS) and small-angle neutron scattering (SANS). The
scattering data show the increase of particle size and
swelling capability during the polymerization process. After
60 min further continuation of the polymerization reaction
causes no further change of neither external nor internal
particle properties. SANS measurements reveal the formation
of a dense core, mainly consisting of cross-linker at an
early polymerization state. This is followed by the growth
of a loosely packed polymer shell. Nanodomains, observed
during the volume phase transition (VPT), as well as a
second correlation-length of the network fluctuations arise
with progressing polymerization reaction related to the
buildup of the shell.},
cin = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
(München) ; JCNS-FRM-II / Neutronenstreuung ; JCNS-1},
ddc = {540},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
I:(DE-Juel1)JCNS-1-20110106},
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)KWS2-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000358823300014},
doi = {10.1021/acs.macromol.5b00686},
url = {https://juser.fz-juelich.de/record/202946},
}