What is ISO 2453 - Determination of bound styrene content about?
ISO 2453 is an international standard that covers raw styrene-butadiene, emulsion-polymerized rubbers.
ISO 2453 specifies the bound styrene test method which is useful in maintaining the accuracy of monomer charging and that results in producing the uniform products.
ISO 2453 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.
Note 1: The method is also applicable to extracted oil-extended emulsion-polymerized SBR as long as it produces a film suitable for refractive index measurements.
Note 1: The method given in ISO 2453 is not applicable to solution polymerized SBR.
Who is ISO 2453 - Determination of bound styrene content for?
ISO 2453 on bound styrene content is useful for:
- Manufacturer of shoes and automotive parts
- Manufacturer of rubber products
- Rubber processing companies
Why should you use ISO 2453 - Determination of bound styrene content?
Styrene-butadiene rubber is derived from two monomers that are styrene and butadiene which results in aging stability and helps in keeping the uniform quality in every product.
ISO 2453 can help you in extracting ethanol-toluene azeotrope (ETA) which provides the thickness to the rubber sheet by drying and pressing the aluminium foil between these sheets. The refractive index is used in calculating the bound styrene content obtained from thinly sheeted rubber. The reagents mentioned in ISO 2453 are helpful in determining the analytical grade and water purity.
ISO 2453 can be your best guide in performing the test as it specifies the test procedure along with the apparatus which is useful in testing. This test method can be used for checking the accuracy of monomer charging which ensures the uniformity of the product.
What’s changed since the last update?
BS ISO 2453:2020 supersedes BS 716412:1991, which is withdrawn. BS ISO 2453:2020 includes some technical changes as follows:
- Deletion of spiders and introduction of the extraction procedure of ISO 7781 into the preparation procedure (7.1)
- Addition of wide-mouthed conical flask (6.1)
- Correction of Table 1
- A move of precision data to an informative Annex A with the addition of precision data evaluated in 2019
