A transient SANS study of the structure of complex fluids during extensional flow
This proposal aims to explore the structural changes that occur during uniaxial extensional flow and develop structure-property relations between the transient microstructural evolution of a model extensional flow material and its macroscopic extensional flow behavior. A total of four samples will be tested using a home-built CaBER-SANS sample environment in the D-22 beamline. Samples will consist of two concentrations of 35 kDa PEO (0.05 and 0.1 wt%) mixed with protonated and deuterated 2 kDa PEO (40 wt%) dispersed in D2O. The deuterated 2 kDa PEO will be contrast matched with the surrounding D2O, thus allowing us to capture the structural dynamics of the 35 kDa PEO and identify how each component of the solution contributes to the its extensional flow properties. Time-resolved SANS techniques will be employed to resolve how the structure of these polymers evolves during capillary formation and breakup. A bin size of 0.1 s will be used to capture these structural changes. For this study, we propose to use 3 days of time on the D-22 beamline to carry out these transient CaBER-SANS studies.
The data is currently only available to download if you are a member of the proposal team.
The recommended format for citing this dataset in a research publication is in the following format:
Matthew A. Wade; CLASEN Christian; M. P. Lettinga; PASSARO Luca; PORCAR Lionel and RADULESCU Aurel. (2023). A transient SANS study of the structure of complex fluids during extensional flow. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-11-2139
This data is not yet public
This data is not yet public
ILL has partnered with DataCite as the registration agency
for data persistent identifiers.