Relative effects of polymer composition and sample preparation on glass dynamics

Author:

Elder Robert M.1,Forster Amanda L.2,Krishnamurthy Ajay2,Dennis Joseph M.1,Akiba Hiroshi3,Yamamuro Osamu3,Ito Kanae4,Evans Katherine M.5,Soles Christopher5,Sirk Timothy W.1ORCID

Affiliation:

1. Polymers Branch, U.S. DEVCOM Army Research Laboratory, Aberdeen Proving Ground, Maryland 21005, USA

2. Materials Measurement Science Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA

3. Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan

4. Industrial Application Division, Spring-8, Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo, Hyogo 679-5198, Japan

5. Materials Science and Engineering Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA

Abstract

Size and geometry of free volume holes are related to cage dynamics in polymer glasses. Molecular simulations, positron annihilation spectroscopy and quasi-elastic neutron scattering show how the polarity of monomers and quench rate control the population of aspherical holes.

Funder

National Institute of Standards and Technology

Publisher

Royal Society of Chemistry (RSC)

Subject

Condensed Matter Physics,General Chemistry

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