Abstract

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.


General information 

  • Status
     :  Withdrawn
    Publication date
     : 2005-12
  • Edition
     : 1
    Number of pages
     : 15
  • Technical Committee
     : ISO/TC 45/SC 3 Raw materials (including latex) for use in the rubber industry
  • ICS
     :
    83.060 Rubber

Life cycle


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