Draft
International Standard
ISO/DIS 4504
Plastics — Polyethylene (PE) — Determination of co-monomer content by solution state 13C-NMR spectrometry
Reference number
ISO/DIS 4504
Edition 2
Projet Norme internationale
Preview
ISO/DIS 4504
88256
Indisponible en français
Projet de Norme internationale au stade enquête auprès des membres de l’ISO.
Remplacera ISO 4504:2023

ISO/DIS 4504

ISO/DIS 4504
88256
Langue
Format
CHF 63
Convertir les francs suisses (CHF) dans une autre devise

Résumé

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.

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