ISO 16014-4:2019

Plastics — Determination of average molecular weight and molecular weight distribution of polymers using size-exclusion chromatography — Part 4: High-temperature method

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).

Plastiques — Détermination de la masse moléculaire moyenne et de la distribution des masses moléculaires de polymères par chromatographie d'exclusion stérique — Partie 4: Mesurage aux températures élevées

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 16014-4:2012 - Plastics — Determination of average molecular mass and molecular mass distribution of polymers using size-exclusion chromatography — Part 4: High-temperature method
• Effective Date: 15-Dec-2017

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 16014-4
Third edition
2019-05
Plastics — Determination of average
molecular weight and molecular
weight distribution of polymers using
size-exclusion chromatography —
Part 4:
High-temperature method
Plastiques — Détermination de la masse moléculaire moyenne
et de la distribution des masses moléculaires de polymères par
chromatographie d'exclusion stérique —
Partie 4: Mesurage aux températures élevées
Reference number
ISO 16014-4:2019(E)
©
ISO 2019

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ISO 16014-4:2019(E)

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ii © ISO 2019 – All rights reserved

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ISO 16014-4:2019(E)

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Reagents . 2
6 Apparatus . 2
7 Procedure. 3
7.1 Preparation of solutions of molecular weight standards . 3
7.2 Preparation of sample solutions . 4
7.3 Preparation of solutions for column performance evaluation . 5
7.4 Setting up the apparatus. 5
7.5 Operating parameters . 5
7.5.1 Flow rate . 5
7.5.2 Injection masses and injection volumes . 5
7.5.3 Temperature of, and dwell time in, injector . 5
7.5.4 Column temperature . 5
7.5.5 Detector sensitivity . 6
7.6 Number of determinations .
...