ISO 21561-2:2016
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Styrene-butadiene rubber (SBR) — Determination of the microstructure of solution-polymerized SBR — Part 2: FTIR with ATR method
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15-08-2024
English
08-03-2016
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ISO 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.
| Committee |
ISO/TC 45/SC 3
|
| DevelopmentNote |
Supersedes ISO/DIS 21561-2 and ISO 21561. (03/2016)
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| DocumentType |
Standard
|
| Pages |
16
|
| PublisherName |
International Organization for Standardization
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| Status |
Superseded
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| SupersededBy | |
| Supersedes | |
| UnderRevision |
| Standards | Relationship |
| SS-ISO 21561-2:2016 | Identical |
| NEN ISO 21561-2 : 2016 | Identical |
| BS ISO 21561-2:2016 | Identical |
| IS 4518 : Part 4 : Sec 2 : 2024 | Identical |
| ISO 21561-1:2015 | Styrene-butadiene rubber (SBR) Determination of the microstructure of solution-polymerized SBR Part 1: 1H-NMR and IR with cast-film method |
| ISO 1795:2017 | Rubber, raw natural and raw synthetic — Sampling and further preparative procedures |
| ISO/TR 9272:2005 | Rubber and rubber products Determination of precision for test method standards |
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