ISO 21561:2005
Withdrawn
View Superseded by
Styrene-butadiene rubber (SBR) — Determination of the microstructure of solution-polymerized SBR
Hardcopy , PDF
11-18-2005
04-09-2025
ISO 21561:2005 specifies procedures for the quantitative determination of the microstructure of the butadiene units and the content of styrene units 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 1,4-trans, 1,4-cis and 1,2-vinyl contents are expressed in mol % relative to the butadiene units.
| Committee |
ISO/TC 45/SC 3
|
| DevelopmentNote |
Supersedes ISO/DIS 21561 (11/2005)
|
| DocumentType |
Standard
|
| Pages |
15
|
| PublisherName |
International Organization for Standardization
|
| Status |
Withdrawn
|
| SupersededBy |
| Standards | Relationship |
| SAC GB/T 28728 : 2012 | Identical |
| NEN ISO 21561 : 2005 AMD 1 2010 | Identical |
| BS ISO 21561 : 2005 | Identical |
| 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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