ISO 21561:2005 丁苯橡胶（SBR）.溶液聚合型SBR微观结构的测定

标准编号：ISO 21561:2005

中文名称：丁苯橡胶（SBR）.溶液聚合型SBR微观结构的测定

英文名称：Styrene-butadiene rubber (SBR) — Determination of the microstructure of solution-polymerized SBR

发布日期：2005-12

标准范围

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.

标准预览图