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Dynamics of liquid sulphur around the equilibrium polymerization transition

Author

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  • Descôtes, L.
  • Bellissent, R.
  • Pfeuty, P.
  • Dianoux, A.J.

Abstract

Liquid sulphur has been known since the beginning of this century to show at a temperature Tp = 160°C a liquid-liquid transition assumed to consist of the polymerization of S8 rings into very long polymeric chains. A first neutron scattering study of the liquid local order enabled us to check this assumption at a microscopic level. Then, the vibrational density of states and local motions were studied by time-of-light (TOF) inelastic neutron scattering as a function of temperature, below and above Tp. Both the decrease of the modes characteristic of S8 rings and the evolution of the quasielastic scattering with temperature are consistent with the picture of a polymer transition at Tp followed by a ring-chain equilibrium.

Suggested Citation

  • Descôtes, L. & Bellissent, R. & Pfeuty, P. & Dianoux, A.J., 1993. "Dynamics of liquid sulphur around the equilibrium polymerization transition," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 201(1), pages 381-385.
    • Handle: RePEc:eee:phsmap:v:201:y:1993:i:1:p:381-385
    DOI: 10.1016/0378-4371(93)90436-8
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    Cited by:

    1. Zhuang, Juewen & Sarkar Das, S. & Nowakowski, M.D. & Greer, S.C., 1997. "Living poly(α-methylstyrene) near the polymerization line 6. Chemical kinetics," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 244(1), pages 522-535.

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