TY  - JOUR
AU  - Rosenfeldt, S.
AU  - Lüdel, F.
AU  - Schulreich, C.
AU  - Hellweg, T.
AU  - Radulescu, A.
AU  - Schmelz, J.
AU  - Schmalz, H.
AU  - Harnau, L.
TI  - Patchy worm-like micelles: solution structure studied by small-angle neutron scattering
JO  - Physical Chemistry Chemical Physics
VL  - 14
SN  - 1463-9076
CY  - Cambridge
PB  - RSC Publ.
M1  - PreJuSER-22532
SP  - 12750 - 12756
PY  - 2012
N1  - This work was supported by the German Science Foundation (Collaborative Research Center 840, project A2). We thank the Julich Center of Neutron Scattering (JCNS, Germany) for financial travel support and for providing beamtime at the KWS 1 instrument at FRM II in Munich, Germany.
AB  - Triblock terpolymers exhibit a rich self-organization behavior including the formation of fascinating cylindrical core-shell structures with a phase separated corona. After crystallization-induced self-assembly of polystyrene-block-polyethylene-block-poly(methyl methacrylate) triblock terpolymers (abbreviated as SEMs = Styrene-Ethylene-Methacrylates) from solution, worm-like core-shell micelles with a patchy corona of polystyrene and poly(methyl methacrylate) were observed by transmission electron microscopy. However, the solution structure is still a matter of debate. Here, we present a method to distinguish in situ between a Janus-type (two faced) and a patchy (multiple compartments) configuration of the corona. To discriminate between both models the scattering intensity must be determined mainly by one corona compartment. Contrast variation in small-angle neutron scattering enables us to focus on one compartment of the worm-like micelles. The results validate the existence of the patchy structure also in solution.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
C6  - pmid:22880203
UR  - <Go to ISI:>//WOS:000308101100008
DO  - DOI:10.1039/c2cp41231d
UR  - https://juser.fz-juelich.de/record/22532
ER  -