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Dispersion and interaction of graphene oxide in amorphous and semi-crystalline nano-composites: a PALS study

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Author

  • Frans Maurer
  • Carlos Rodriguez Arza

Summary, in English

The influence of dispersion and interaction of Graphene Oxide (GO) in semi-crystalline Polyhydroxy butyrate (PHB) and glassy amorphous Poly(tBP-oda) is explored by Positron Annihilation Lifetime Spectroscopy (PALS). The ortho-Positronium lifetimes which represent the main free volume hole size of both polymers are mainly affected by the large differences in internal stresses built up by the shrinkage of the polymers during their preparation, restricted by the platelet structure of GO. The ortho-Positronium intensities, which represent the ortho-Positronium formation probabilities, suggest a strong dependency of on the dispersion of the nano-particles and their aspect ratio.

Publishing year

2015

Language

English

Pages

012020-012020

Publication/Series

11th International Workshop on Positron and Positronium Chemistry (PPC-11)

Volume

618

Document type

Conference paper

Publisher

IOP Publishing

Topic

  • Polymer Chemistry

Conference name

11th International Workshop on Positron and Positronium Chemistry (PPC)

Conference date

2014-11-09 - 2014-11-14

Status

Published

ISBN/ISSN/Other

  • ISSN: 1742-6596
  • ISSN: 1742-6588