ISO 21561-1:2015
Current
The latest, up-to-date edition.
Styrene-butadiene rubber (SBR) — Determination of the microstructure of solution-polymerized SBR — Part 1: 1H-NMR and IR with cast-film method
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English
17-07-2015
ISO 21561-1:2015 specifies procedures for the quantitative determination of the microstructure of the butadiene and the content of styrene in solution-polymerized SBR (S-SBR) by 1H-NMR spectrometry as an absolute method and by IR spectrometry as a relative method. The styrene content is expressed in mass % relative to the whole polymer. The trans, cis and vinyl contents are expressed in mol % relative to the butadiene. These methods are applicable only for raw rubber.
NOTE 1 IR spectrometry can also give absolute values of microstructure by calibration with S-SBRs of known absolute microstructure obtained by 1H-NMR spectrometry.
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 21561-1. Supersedes ISO 21561. (07/2015)
|
| DocumentType |
Standard
|
| Pages |
17
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| NEN ISO 21561-1 : 2015 | Identical |
| BS ISO 21561-1:2015 | Identical |
| IS 4518 : Part 4 : Sec 1 : 2024 | Identical |
| ISO 21561-2:2016 | Styrene-butadiene rubber (SBR) — Determination of the microstructure of solution-polymerized SBR — Part 2: FTIR with ATR method |
| BS ISO 21561-2:2016 | Styrene-butadiene rubber (SBR). Determination of the microstructure of solution-polymerized SBR FTIR with ATR method |
| ISO 1795:2017 | Rubber, raw natural and raw synthetic — Sampling and further preparative procedures |
| ISO 1407:2011 | Rubber — Determination of solvent extract |
| ISO/TR 9272:2005 | Rubber and rubber products — Determination of precision for test method standards |
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