This is a page describing data taken during an experiment at the ISIS Neutron and Muon Source. Information about the ISIS Neutron and Muon Source can be found at https://www.isis.stfc.ac.uk.
Monomer dynamics in polymer nanocomposites
Abstract: We have recently shown that the addition of single walled carbon nanotubes produces a minimum in the diffusion coefficient with increasing nanoparticle concentration. Initially, tracer diffusion coefficients are suppressed with increasing nanotube content and then increase beyond a critical concentration of ~ 1 vol%. To date, our understanding of why the diffusion coefficient shows this behaviour is limited, although rheological data indicate that whole chain relaxation times are not affected by the presence of the nanotubes. In order to determine whether the diffusion coefficient is changing in response to local monomer dynamics in the presence of nanotubes, we will use QENS to measure the concentration dependence of local dynamics associated with the phenyl side group of the polystyrene chains.
Public release date: 02 August 2013
Principal Investigator: Professor Nigel Clarke
DOI: 10.5286/ISIS.E.24079397
ISIS Experiment Number: RB1010239
Part Number: 1 - IRIS
Date of Experiment: 26 July 2010
Publisher: STFC ISIS Neutron and Muon Source
Data format: RAW/Nexus
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Data Citation
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[author], [date], [title], [publisher],
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Professor Nigel Clarke; (2010): Monomer dynamics in polymer nanocomposites, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.24079397