Résumé
PrévisualiserISO 21561-2:2016 specifies procedures for the quantitative determination of the microstructure of the butadiene and the content of styrene in solution-polymerized SBR (S-SBR) by Fourier Transform Infrared Spectrometry (FTIR) with Attenuated Total Reflection (ATR) method. The styrene content is expressed in mass % relative to the whole polymer. The vinyl, trans and cis contents are expressed in mol % relative to the butadiene content. This method is only applicable to raw rubbers.
NOTE 1 Precision as shown in Annex A may not be obtained for S-SBRs containing polystyrene block or styrene content more than 45 mass %.
NOTE 2 Only "vinyl", "trans" and "cis", are used in this part of ISO 21561. 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.
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État actuel: Projet
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Edition: 2
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Comité technique: ISO/TC 45/SC 3 Matières premières (y compris le latex) à l'usage de l'industrie des élastomères
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- ICS :
- 83.060 Élastomères
Acheter cette norme
| Format | Langue | |
|---|---|---|
| std 1 61 | ||
| std 2 61 | Papier |
- CHF61
Cycle de vie
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Précédemment
PubliéeISO 21561-2:2016
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Actuellement
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