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Chemical analysis of rubber compound and vulcanizate (vulcanized rubber) composition

  • Identification of rubbers or/and other polymers
  • Quantitative determination of individual rubbers
  • Determination of total organic additive content (extractive matter)
  • Qualitative and semi-quantitative determination of individual organic additives (softeners, antidegradants, crosslinking agents, processing agents, etc.)
  • Determination of carbon black content
  • Qualitative and quantitative determination of inorganic components
  • Determination of zinc, calcium, magnesium, silicon, aluminium and titanium content
  • Determination of total sulphur content
  • Determination of chlorine, bromine and fluorine content
  • Determination of nitrogen content


Ascertainment of vulcanized rubber quality and properties by chemical methods

  • Identification of surface substances (migrating components)
  • Identification of impurities and inhomogeneities
  • Estimation of crosslinking degree by determination of unbound sulphur, reaction enthalpy and equilibrium swelling in solvents
  • Calorimetric and spectroscopic monitoring of crosslinking course
  • Testing of resistance to various media by single-sided and immersion swelling
  • Testing of certain products for suitability in medical and food use
  • Determination of volatile components in vulcanized rubber (Fogging)


Vulcanizate sample analysis by TGA (quantitative determination of composition)   Sample analysis by DSC (determination of phase transitions (melting point), Tg and chemical reactions)


Measurement result by TGA (mass variation as a function of temperature)

click to enlarge



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