6533b870fe1ef96bd12d03a0
RESEARCH PRODUCT
A combined small-angle neutron and X-ray scattering study of block copolymers micellisation in supercritical carbon dioxide
Milos SteinhartPappannan ThiyagarajanManfred KriechbaumFabrizio Lo CelsoRoberto TrioloJoseph M. DesimoneHeinz AmenitschFabio TrioloAlessandro Triolosubject
Supercritical carbon dioxideScatteringChemistrySmall-angle X-ray scatteringAstrophysics::High Energy Astrophysical PhenomenaAnalytical chemistryX-raySmall-angle neutron scatteringGeneral Biochemistry Genetics and Molecular BiologySynchrotronlaw.inventionCondensed Matter::Soft Condensed MatterlawPolymer chemistryCopolymerNeutrondescription
Small angle neutron and X-ray scattering (SANS and SAXS) are used to investigate the monomer–aggregate transition of fluorocarbon–hydrocarbon diblock copolymers in supercritical carbon dioxide. SANS data are analyzed using a polydisperse sphere core–shell model. Synchrotron SAXS data have been collected by profiling the pressure at different temperatures, and critical micellization densities have been obtained for a series of diblock solutions. Finally pressure jump experiments, combined with synchrotron SAXS, have revealed two steps in the dynamics of the formation of the aggregates.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2003-04-16 | Journal of Applied Crystallography |