Service analysis

Last update: 8 March 2023

These services concern the physico-chemical and biochemical characterization of natural rubber for a better understanding of the variability and the elaboration of its quality. Our expertise is based on a platform that brings together a large number of conventional analytical equipment for standard analyses (ISO2000 and SMR standards). It is accredited by the International Rubber Association. It also relies on high-tech tools for characterizing the structure (SEC-MALS chromatography, IR-TF in ATR mode, etc...) and composition in non-isoprene compounds of latex and natural rubber (mainly lipids, proteins and minerals).

Standard analyses (ISO2000 and SMR standards)

  • Content of impurities, volatile matter, nitrogen, ash
  • Wallace plasticity (P0); Mooney viscosity (VM) with variable speed
  • Plasticity Retention Index (PRI)
  • Accelerated Storage Hardening (ASHT) Test

Other analysis on dry rubber

Quantification of hydroxylamine

Analyses of macromolecules

  • Gels (centrifugation and/or SEC and A4F MALS)
  • Macromolecular structure: distribution of molar masses, Mn, Mw, Mz, Ip, Rg by SEC MALS

Analysis of non-isoprenes (or non-caoutchoucs)

  • Lipids (quantity of extractable lipids)
  • Amount of free fatty acids
  • Total fatty acid composition
  • Composition in phospholipids, glycolipides and lipids neutral by GC-FID, GC-MS, HPLC-UV-MS
  • Proteins (quantity of extractable proteins, separation and quantification by electrophoresis (SDS-PAGE and 2D-IEF) and FPLC chromatography)
  • Minerals (ash, elemental analysis by ICP)

Infrared spectral analyses

IR-TF in ATR mode; NIRS

Last update: 8 March 2023