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BS EN ISO 8985:2022

BS EN ISO 8985:2022

$142.49

Plastics. Ethylene/vinyl acetate copolymer (EVAC) thermoplastics. Determination of vinyl acetate content

Published By Publication Date Number of Pages
BSI 2022 36
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This document specifies two categories of method for the determination of the vinyl acetate (VAC) content of ethylene/vinyl acetate (EVAC) copolymer, for use in the designation of such copolymers according to ISO 21301-1. One category is referred to as “reference methods”, the other as “test methods”. The “reference methods” are used to calibrate the method used for the determination of the vinyl acetate content of ethylene/vinyl acetate copolymers. The “test methods” are other methods which can be used for the determination if they are calibrated using one of the reference methods described in Clause 4, provided they show a certain permissible repeatability.

PDF Catalog

PDF Pages PDF Title
2 National foreword
4 European foreword
7 Foreword
9 1 Scope
2 Normative references
3 Terms and definitions
4 Reference methods
4.1 Reference method 1: Hydrolysis and back titration
4.1.1 Principle
10 4.1.2 Reagents
4.1.3 Apparatus
4.1.4 Procedure
11 4.1.5 Expression of results
4.1.6 Test report
12 4.2 Reference method 2: Saponification and potentiometric titration
4.2.1 Principle
4.2.2 Reagents
4.2.3 Apparatus
13 4.2.4 Procedure
4.2.5 Expression of results
14 4.2.6 Test report
4.3 Reference method 3: Measurement of oxygen
4.3.1 Principle
4.3.2 Apparatus
15 4.3.3 procedure
18 4.3.4 Sampling
4.3.5 Calibration
19 4.3.6 Calculation of vinyl acetate content
4.3.7 Test report
5 Examples of test methods
5.1 Method using infrared spectrometry
5.1.1 Principle
5.1.2 Apparatus and materials
20 5.1.3 Procedure
22 5.1.4 Expression of results
23 5.1.5 Test report
5.2 Acidimetric method
5.2.1 Principle
5.2.2 Reagents and materials
5.2.3 Apparatus
24 5.2.4 Procedure
25 5.2.5 Expression of results
5.2.6 Test report
26 5.3 Iodometric method
5.3.1 Principle
5.3.2 Reagents
5.3.3 Apparatus
5.3.4 Procedure
27 5.3.5 Expression of results
5.3.6 Test report
5.4 Thermogravimetry method
5.4.1 Principle
5.4.2 Apparatus
28 5.4.3 Test specimens
5.4.4 Calibration
5.4.5 Procedure
29 5.4.6 Test report
30 Bibliography

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BS EN ISO 8985:2022
$142.49