Hemijska Industrija (Jan 2005)

Studies of chemical interactions between chlorosulphonated polyethylene and nit rile rubber

  • Marković Gordana,
  • Marinović-Cincović Milena T.,
  • Radovanović Blaga C.,
  • Budinski-Simendić Jaroslava K.

DOI
https://doi.org/10.2298/hemind0512324m
Journal volume & issue
Vol. 59, no. 11-12
pp. 324 – 326

Abstract

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Highly polar rubbers interact with each other through their active functional groups via condensation or substitution reactions at high temperature. Chlorosulphonated polyethylene (CSM) rubber is a highly reactive rubber, the reactivity of with is due to the -SO2CI groups. When CSM reacts with nit rile rubber (NBR), a chemical reaction takes place between the two rubbers at high temperature. Fourier transform infrared (FTIR) studies support that CSM/NBR (50/50 w/w) isothermally induces a self cross-linking blend, when cross-linking takes place via the acrylonitrile groups of NBR and the SO2CI groups or the insitu generated allyl chloride moieties of CSM. There is a loss of some -CN groups during cross-linking. This may be due to an attack on the -CN groups by HCI (produced during the heating of CSM) in the presence of inherent moisture in the polymers. Amid type of linkage is formed due to cross-linking.

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