Neutron Compton Scattering Study of the Co-Nonsolvency Effect

DOI

(RB1010481) Neutron Compton Scattering, experiments were done on samples of poly-N-isopropylacrylamide dissolved in D2O, CH3OD and a mix of both solvents. This is of interest due to the unusual Co-Nonsolvency effect, a non-linear phenomenon which results in the appearance of a Lower Critical Solution Temperature, the lowest being at a water methanol mix of ca 65:35. RB1010481 allowed us to investigate only 6 samples. Extant understanding of the water methanol mixtures demands at least 3 main environments for the H and D nuclei. Assuming a model of only 2 sites we were able to predict the NCS widths for all the water/methanol mixtures. Observed non-zero correlations between these two sites is in agreement with the presence of a third interaction. This is a PhD project of Lee Iverson, who has to submit the thesis within six months, and futher data are needed to validate the model.

Identifier
DOI https://doi.org/10.5286/ISIS.E.24090522
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/24090522
Provenance
Creator Mr Lee Iverson; Dr Andrew Mayes; Dr Upali Jayasooriya; Dr Jerry Mayers
Publisher ISIS Neutron and Muon Source
Publication Year 2016
Rights CC-BY Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Contact isisdata(at)stfc.ac.uk
Representation
Resource Type Dataset
Discipline Photon- and Neutron Geosciences
Temporal Coverage Begin 2013-05-13T23:00:00Z
Temporal Coverage End 2013-05-28T18:41:05Z