ASTM-D5775 Standard Test Method for Rubber—Determination of Bound Styrene in Styrene Butadiene Rubber by Refractive Index

ASTM-D5775 - 1995 R19 EDITION - CURRENT
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Standard Test Method for Rubber—Determination of Bound Styrene in Styrene Butadiene Rubber by Refractive Index
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Scope

1.1 This test method covers the determination of styrene content, and is intended for general use on solid uncompounded styrene-butadiene copolymers, commonly referred to as SBR, prepared by the emulsion process. SBR polymers prepared in solution will require the use of different refractive index tables because the vinyl content of the butadiene differs from that in the emulsion polymers. It is applicable to polymers having less than 55 % bound styrene.

Note 1: The nomenclature used in this test method is in accordance with Practice D1418.

1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Significance and Use

4.1 The bound styrene test is a measure of the bound monomeric composition of the rubber. It is used as a check on the accuracy of monomer charging and also as a guide to the uniformity of the product, since the bound styrene content affects the physical properties.

Keywords

bound styrene; refractive index; styrene-butadiene rubber (SBR);; ICS Number Code 83.060 (Rubber)

To find similar documents by ASTM Volume:

09.01 (Rubber, Natural and Synthetic -- General Test Methods; Carbon Black)

To find similar documents by classification:

83.060 (Rubber Raw rubber, see 83.040.10)

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Document Number

ASTM-D5775-95(2019)

Revision Level

1995 R19 EDITION

Status

Current

Modification Type

Reapproval

Publication Date

Jan. 1, 2019

Document Type

Test Method

Page Count

4 pages

Committee Number

D11.11