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@ARTICLE{Prause:909071,
author = {Prause, Albert and Hechenbichler, Michelle and von
Lospichl, Benjamin and Feoktystov, Artem and Schweins, Ralf
and Mahmoudi, Najet and Laschewsky, André and Gradzielski,
Michael},
title = {{A}ggregation {B}ehavior of {N}onsymmetrically
{E}nd-{C}apped {T}hermoresponsive {B}lock {C}opolymers in
{A}queous {S}olutions: {B}etween {P}olymer {C}oils and
{M}icellar {S}tates},
journal = {Macromolecules},
volume = {55},
number = {13},
issn = {0024-9297},
address = {Washington, DC},
publisher = {Soc.},
reportid = {FZJ-2022-02989},
pages = {5849 - 5863},
year = {2022},
abstract = {The thermosensitive aggregation behavior in an aqueous
solution of a library of amphiphilic BAB* copolymers is
studied, where “A” represents a long permanently
hydrophilic poly(N,N-dimethylacrylamide) (pDMAm) block,
“B” represents a permanently hydrophobic end with an
n-dodecyl chain, and “B*” represents a thermoresponsive
(TR) block featuring a lower critical solution temperature
(LCST). Four polyacrylamides are employed for B*, namely,
poly(N-n-propylacrylamide) (pNPAm),
poly(N-isopropylacrylamide) (pNiPAm),
poly(N,N-diethylacrylamide) (pDEAm), and
poly(N-acryloylpyrrolidine) (pNAP), which differ with
respect to the hydrophilicity of their amide side chains and
LCST behavior. While blocks A and B were kept constant, the
lengths of the TR blocks were varied systematically. These
amphiphilic copolymers were studied as a function of
concentration and temperature via light and neutron
scattering (static light scattering (SLS), dynamic light
scattering (DLS), small-angle neutron scattering (SANS)).
For sufficiently long pNiPAM and pDEAm blocks (DPn > 40), a
pronounced hydrophobic effect at temperatures above the LCST
transition results in well-structured, ordered aggregates.
Thus, the aggregation can be controlled by the choice and
length of the TR block, thereby elucidating a so far hardly
explored class of temperature-sensitive polymeric
amphiphiles.},
cin = {JCNS-FRM-II / MLZ / JCNS-1 / JCNS-4},
ddc = {540},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 / I:(DE-588b)4597118-3 /
I:(DE-Juel1)JCNS-1-20110106 / I:(DE-Juel1)JCNS-4-20201012},
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},
UT = {WOS:000823879800001},
doi = {10.1021/acs.macromol.2c00878},
url = {https://juser.fz-juelich.de/record/909071},
}