Small angle neutron scattering on polyacrylonitrile polymerized by gamma-ray irradiation

A. Czuppon, N. Kroó, I. Vizi, L. Rosta, L. Kiss

Research output: Article


Small angle neutron scattering experiments were carried out on unfractionated polyacrylonitrile (PAN) - dimethylsulfoxide system. The PAN sample was polymerized at - 78°C by gamma - ray irradiation in urea - canal complex. The yield of the polymerization was 30 %. Deuterated dimethylsulfoxide served as solvent. The neutron intensities scattered from the polymer solutions, concentrations ranging from 1,8 to 19×10-3 g·cm-3, were measured with a triple-axes spectrometer in a range of scattering angle between 0,5° - 2,0° (8-35 mrad). The data were taken in the vicinity of critical concentration c*. We have measured the screening length ξ(c) (introduced by Edwards) in the dilute and in the semi-dilute concentration regimes. The ratio between ξd·c1/2 and ξsd·c1/2 yields a value of 2.

Original languageEnglish
Pages (from-to)627-633
Number of pages7
JournalPolymer Bulletin
Issue number11-12
Publication statusPublished - nov. 1981

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Polymers and Plastics
  • Materials Chemistry

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