ISO 2453:2020

Current Revision
Rubber, raw styrene-butadiene, emulsion-polymerized - Determination of bound styrene content - Refractive index method

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ISO 2453:2020

Rubber, raw styrene-butadiene, emulsion-polymerized - Determination of bound styrene content - Refractive index method

PUBLISH DATE 2020
ISO 2453:2020

This document specifies a method for determining the *bound styrene* content of emulsion-polymerized styrene-butadiene rubbers (SBR) by correlation with the measured refractive index of an extracted sample according to a table of refractive indices versus percentage mass fractions styrene.

The method is also applicable to extracted oil-extended emulsion-polymerized SBR *as long as it produces a film suitable for refractive index measurements.* It is not applicable to solution-polymerized SBR.

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