TY  - JOUR
AU  - Papagiannopoulos, Aristeidis
AU  - Zhao, Junpeng
AU  - Zhang, Guangzhao
AU  - Pispas, Stergios
AU  - Radulescu, Aurel
TI  - Thermoresponsive aggregation of PS-PNIPAM-PS triblock copolymer: A combined study of light scattering and small angle neutron scattering
JO  - European polymer journal
VL  - 56
SN  - 0014-3057
CY  - New York, NY [u.a.]
PB  - Elsevier
M1  - FZJ-2014-07140
SP  - 59 - 68
PY  - 2014
AB  - The aggregate structure of a thermoresponsive polystyrene–b-poly(N-isopropylacrylamide)–b-polystyrene (PS–PNIPAM–PS) triblock copolymer was investigated as a function of temperature in aqueous solutions by the combination of small angle neutron scattering (SANS) and dynamic/static light scattering (LS). SANS shows that the system consists of spherical intermicellar aggregates which self-assemble into larger clusters either at temperatures below or above the lower critical solution temperature (LCST). Upon the solubility transition of PNIPAM the mass of the clusters increases significantly, whereas their size remains constant and the size of the intermicellar aggregates decreases. This picture is consistent with the LS data where the signature of the two entities in solution is observed. The combination of LS and SANS studies has presented a clearer scenario on the thermoresponsive aggregation behavior of the investigated PS–PNIPAM–PS triblock copolymer.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000338392000007
DO  - DOI:10.1016/j.eurpolymj.2014.04.013
UR  - https://juser.fz-juelich.de/record/185715
ER  -