ISO 21561:2005
Styrene-butadiene rubber (SBR) - Determination of the microstructure of solution-polymerized SBR
- Standard No.
- ISO 21561:2005
- Release Date
- 2005
- Published By
- International Organization for Standardization (ISO)
- Status
- 2010-12
- Replace By
- ISO 21561:2005/Amd 1:2010
- Latest
- ISO 21561:2005/Amd 1:2010
- Scope
- This International Standard 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
H-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. NOTE IR spectrometry can also give absolute values of microstructure by calibration with S-SBRs of known absolute microstructure obtained by H-NMR spectrometry.
ISO 21561:2005 history
- 2010 ISO 21561:2005/Amd 1:2010 Styrene-butadiene rubber (SBR) - Determination of the microstructure of solution-polymerized SBR; Amendment 1
- 2005 ISO 21561:2005 Styrene-butadiene rubber (SBR) - Determination of the microstructure of solution-polymerized SBR
