ISO 16014-2:2019

Plastics — Determination of average molecular weight and molecular weight distribution of polymers using size-exclusion chromatography — Part 2: Universal calibration method

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.

Plastiques — Détermination de la masse moléculaire moyenne et de la distribution des masses moléculaires de polymères par chromatographie d'exclusion stérique — Partie 2: Méthode d'étalonnage universelle

General Information

• Status: Published
• Publication Date: 14-May-2019
• ICS: 83.080.01 - Plastics in general
• Technical Committee: ISO/TC 61/SC 5 - Physical-chemical properties
• Drafting Committee: ISO/TC 61/SC 5/WG 11 - Analytical methods
• Current Stage: 9020 - International Standard under periodical review
• Start Date: 15-Jan-2024
• Completion Date: 15-Jan-2024

Relations

• Revises: ISO 16014-2:2012 - Plastics — Determination of average molecular mass and molecular mass distribution of polymers using size-exclusion chromatography — Part 2: Universal calibration method
• Effective Date: 15-Dec-2017

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 16014-2
Third edition
2019-05
Plastics — Determination of average
molecular weight and molecular
weight distribution of polymers using
size-exclusion chromatography —
Part 2:
Universal calibration method
Plastiques — Détermination de la masse moléculaire moyenne
et de la distribution des masses moléculaires de polymères par
chromatographie d'exclusion stérique —
Partie 2: Méthode d'étalonnage universelle
Reference number
ISO 16014-2:2019(E)
©
ISO 2019

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ISO 16014-2:2019(E)

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ii © ISO 2019 – All rights reserved

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ISO 16014-2:2019(E)

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle of universal calibration method . 1
5 Reagents . 2
6 Apparatus . 2
7 Procedure. 2
8 Data acquisition and processing . 3
9 Expression of results . 3
9.1 Preparation of universal calibration curve . 3
9.2 Calculation of average molecular weight . 3
9.3 Differential molecular weight distribution curve . 4
9.4 Cumulative molecular weight distribution curve . 4
10 Precision . 4
11 Test report . 4
11.1 General . 4
11.2 Apparatus and measurement parameters .
...