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ISO 21561-1:2015

Current

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

Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English

Published date

17-07-2015

€92.00
Excluding VAT

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.

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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