ISO 21561-2:2024
Styrene-butadiene rubber (SBR) — Determination of the microstructure of solution-polymerized SBR — Part 2: Fourier transform infrared spectrometry (FTIR) with attenuated total reflection (ATR) method
détails du produit
NOTE 1 Precision as shown in Annex A is not always possible to obtain for S-SBRs containing polystyrene block or styrene content more than 45 %.
NOTE 2 Only “vinyl”, “trans” and “cis”, are used in this document. However, the expression of vinyl, trans and cis mean as follows in general:
— vinyl: vinyl unit, vinyl bond, 1,2-unit, 1,2-bond, 1,2-vinyl-unit or 1,2-vinyl-bond;
— trans: 1,4-trans unit, 1,4-trans bond, trans-1,4 unit or trans1,4 bond;
— cis: 1,4-cis unit, 1,4-cis bond, cis-1,4 unit or cis-1,4 bond.