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Research data for "Nanoscale depth-resolved polymer dynamics probed by the implantation of low energy muons" Open Access

The low energy muon (LEM) technique has been used to probe local changes in the dynamical spectrum of thin film polymer samples taking place as a function of the temperature and the implantation depth below the free surface. The studies have been made on samples of polydimethylsiloxane (PDMS) and polybutadiene (PB) using the transverse magnetic field (TF) configuration and diamagnetic probe muons. In PDMS evidence is found for suppression of the glass transition temperature near the surface, along with significantly modified dynamics in the near-surface region as well as at depths significantly below the surface. For PB the LEM technique reveals well-defined layers of dynamical and spatial inhomogeneity at depths of order 0.1 to 0.2 um below the free surface. These inhomogeneous regions may be assigned to nanopores produced by solvent streaming during preparation of spin-cast films. A thermal annealing procedure is shown to significantly reduce the thickness of these inhomogeneous layers. These results demonstrate that using LEM in the TF configuration provides a promising new method for studying surface-modified local dynamics of polymers that is also able to reveal nanostructured buried layers in polymer films.

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Resource type

Dataset

Contributors

Creator: Lancaster, Tom ¹
Contact person: Lancaster, Tom ¹
Creator: Pratt, Francis ²
Creator: Baker, Peter ²
Creator: Blundell, Stephen ³
Creator: Prokscha, Thomas ⁴
Creator: Morenzoni, Elvezio ⁴
Creator: Suter, Andreas ⁴
Creator: Assender, Hazel ³

¹ Durham University, UK
² ISIS Facility, UK
³ Oxford University, UK
⁴ Paul Scherrer Institut, Switzerland

Funder

Science and Technology Facilities Council
Engineering and Physical Sciences Research Council

Research methods

Other description

Keyword

muon
polymer

Subject

Location

Language

Cited in

doi:10.1016/j.polymer.2016.07.078

Identifier

ark:/32150/r19306sz29d
doi:10.15128/r19306sz29d

Rights

All rights reserved All rights reserved

Publisher

Durham University

Date Created

File Details

Depositor

T. Lancaster

Date Uploaded

2 August 2016, 11:08:21

Date Modified

18 August 2016, 10:08:38

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File format: zip (ZIP Format)

Mime type: application/zip

File size: 16098

Last modified: 2016:08:04 12:46:47+01:00

Filename: data.zip

Original checksum: 6618ecaa96223d6bd504ed1ec3fdffcb