Positron Lifetimes in Blends of Recycled Polystyrene and Polyethylene

J. J. Donaghy, K. E. van Ness, M. E. Thompson, D. C. Cassada, T. J. Nosker, D. R. Morrow, R. W. Renfree

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


Positron lifetimes and intensities are used to characterize the microstructure of products made from the blending of recycled plastics: post‐industrial polystyrene and post‐consumer high density polyethylene. For samples of various compositions, the extent of polymeric microheterogeneity (homogeneity) is estimated, the degree of crystallinity of the polyethylene phase, and, using a trapping model, the size and number of microvoids. The results obtained correlate well with wide‐angle x‐ray diffraction measurements and mechanical properties. A unique morphology which results in optimal properties is identified using positron annihilation.

Original languageEnglish (US)
Pages (from-to)67-74
Number of pages8
Journalphysica status solidi (a)
Issue number1
StatePublished - Mar 16 1991

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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