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

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Summary

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.

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Authors and Affiliations

  1. Central Research Institute of Chemistry of the Hungarian Academy of Sciences, 1088, Budapest, Hungary

    A. Czuppon

  2. Central Research Institute for Physics of the Hungarian Academy of Sciences, 1121, Budapest, Hungary

    N. Kroó, I. Vizi & L. Rosta

  3. Research Institute for Plastics, 1950, Budapest, Hungary

    L. Kiss

Authors
  1. A. Czuppon
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  2. N. Kroó
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  3. I. Vizi
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  4. L. Rosta
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  5. L. Kiss
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Czuppon, A., Kroó, N., Vizi, I. et al. Small angle neutron scattering on polyacrylonitrile polymerized by gamma-ray irradiation. Polymer Bulletin 5, 627–633 (1981). https://doi.org/10.1007/BF00255303

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  • DOI: https://doi.org/10.1007/BF00255303

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