ISO 21561:2005
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
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Styrene-butadiene rubber (SBR) Determination of the microstructure of solution-polymerized SBR
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15-03-2019
18-11-2005
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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.
| 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Withdrawn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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