ISO 4504:2023

Plastics — Polyethylene (PE) — Determination of co-monomer content by solution state 13C-NMR spectrometry

Publication date: 16 qer 2023

General information

Current stage: 90.92 Effective date: 28 sht 2023

Originator: ISO

Owner: ISO/TC 61/SC 9

Type: International Standard

ICS: 83.080.20

Gjuha: anglisht

Buying

Statusi: Publikuar

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Scope

This document specifies two methods for the determination of co-monomer contents of polyethylene products by solution state 13C-NMR spectrometry (nuclear magnetic resonance spectrometry):
— method A: inverse gated decoupling method.
— method B: insensitive nuclei enhanced by polarization transfer method;
This document is applicable to copolymers of ethylene having a content of other 1-olefinic monomers of less than a mass fraction of 50 %.
This document is not applicable to ethylene homopolymers or copolymers in which ethylene is polymerized with two or more type 1-olefin comonomers.

Life cycle

NOW

PUBLISHED
ISO 4504:2023
90.92 Standard to be revised
28 sht 2023

REVISED BY

IN_DEVELOPMENT
ISO/DIS 4504

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