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BS ISO 16014-2:2019

BS ISO 16014-2:2019

$102.76

Plastics. Determination of average molecular weight and molecular weight distribution of polymers using size-exclusion chromatography – Universal calibration method

Published By Publication Date Number of Pages
BSI 2019 18
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This document specifies a method for determining the average molecular weight and the molecular weight distribution of polymers using size-exclusion chromatography (SEC). The average molecular weight and the molecular weight distribution are calculated using a universal calibration curve instead of the conventional calibration curve.

NOTE

This test method is classified as a relative method as described in ISO 16014-1 , but the average molecular weights and molecular weight distributions calculated by the method are equal to, or nearly equal to, the absolute values. For details, see the Annex A.

PDF Catalog

PDF Pages PDF Title
2 National foreword
6 Foreword
7 1 Scope
2 Normative references
3 Terms and definitions
4 Principle of universal calibration method
8 5 Reagents
6 Apparatus
7 Procedure
9 8 Data acquisition and processing
9 Expression of results
9.1 Preparation of universal calibration curve
9.2 Calculation of average molecular weight
10 9.3 Differential molecular weight distribution curve
9.4 Cumulative molecular weight distribution curve
10 Precision
11 Test report
11.1 General
11.2 Apparatus and measurement parameters
11 11.3 Calibration of the system
11.3.1 Information on the molecular weight standards
11.3.2 Calibration curve
11.4 Results
12 Annex A (informative) Supplementary information
15 Annex B (informative) K and a in the Mark-Houwink-Sakurada equation
16 Bibliography

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BS ISO 16014-2:2019
$102.76