The Glass Transition near the Surface of a Polybutadiene Film

DOI

The influence of surfaces and interfaces on the dynamical properties of polymers has been a very active area in recent years. The recently developed low energy muon (LEM) technique has emerged as a valuable method for profiling the depth dependence of the dynamical properties of a polymer film and we have observed clear changes in the local glass transition temperature near polymer surfaces using this technique. Following the initial CRISP proposal, some polybutadiene data was obtained and at 150K showed a layer near the surface with strongly reduced density, which corresponds well to size of the region of enhanced dynamics seen in the parallel LEM study of the same sample. This extra layer is not present in data taken at 100K and 200K. This continuation proposal requests further beamtime to make a detailed investigation of the temperature dependence of the size of this layer

Identifier
DOI https://doi.org/10.5286/ISIS.E.24079841
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/24079841
Provenance
Creator Dr Francis Pratt; Professor Sean Langridge; Professor Stephen Blundell; Professor Tom Lancaster
Publisher ISIS Neutron and Muon Source
Publication Year 2013
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 2010-04-28T07:45:24Z
Temporal Coverage End 2010-04-30T16:02:47Z