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Fluoroelastomers: Reaction Products in Early Stages of Network Formation

  • Gianna Cirillo
  • Graziella Chiodini
  • Natalino Del Fanti
  • Giovanni Moggi
  • Febo Severini

Abstract

Reactions occurring in the first steps of crosslinking of vinylidene fluoride (VDF)-hexafluoropropene (HFP) elastomer copolymers (molar ratio 4/1) are investigated operating in homogeneous solution, phase transfer catalysis conditions and bulk. Two kinds of principal unsaturation, monitored by FT-IR and 1H-NMR spectrometry, -CH=CF- and (CF3)C=CH-, have been detected. The former seems to be the curing site in the nucleophilic crosslinking of the fluoroelastomer. Polymer chain scission is also observed and has to be related to the HFP units as well as to the base content in the system.

Keywords

Alkaline Treatment Vinylidene Fluoride Homogeneous Phase Phase Transfer Catalysis Onium Salt 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1a.
    Schmiegel, W. W., Kautsch Gummi Kunstst., 1978, 31, 137;Google Scholar
  2. 1b.
    Schmiegel, W. W., Angew. Makromol. Chem., 1979, 76/77, 39.Google Scholar
  3. 2.
    Blagodatova, O. V., Zeperalova, T. B. and Kozlova, O. V., Soedin. Ser. B, 1985, 27, 362.Google Scholar

Copyright information

© Elsevier Applied Science Publishers Ltd 1988

Authors and Affiliations

  • Gianna Cirillo
    • 1
  • Graziella Chiodini
    • 1
  • Natalino Del Fanti
    • 1
  • Giovanni Moggi
    • 2
  • Febo Severini
    • 2
  1. 1.Montefluos/CRSBollate, MilanItaly
  2. 2.Department of Chemical IndustryThe PolytechnicMilanItaly

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