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download between 0-24 hoursReleased: 2019
ISO 16014-4:2019
ISO 16014-4:2019-Plastics-Determination of average molecular weight and molecular weight distribution of polymers using size-exclusion chromatography
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Standard´s number: | ISO 16014-4:2019 |
Pages: | 14 |
Edition: | 3 |
Released: | 2019 |
Language: | English |
DESCRIPTION
ISO 16014-4:2019
This document specifies a method for determining the average molecular weight and the molecular weight distribution of polymers by size-exclusion chromatography (SEC) using an organic eluent at temperatures between 60 °C and 220 °C (see Annex A). The average molecular weight and the molecular weight distribution are calculated from a calibration curve prepared using polymer standards. Therefore, this test method is classified as a relative method (see ISO 16014-1).