British Standards Institution

Source:: ISO
Committee:: PRI/82 - Thermoplastic materials
Categories:: Thermoplastic materials
Number of comments:: 0

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.

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Standard timeline

1. Proposal (Complete)

Proposal start date:

2. Draft (Complete)

Draft start date:

28/09/2023

3. Public Comments

Public Comments start date:

13/05/2024

Public Comments end date:

06/07/2024

Learn more about the standards development process

Standards Development

BS ISO 4504 ISO 4504 Plastics. Polyethylene (PE). Determination of co-monomer content by solution state 13C-NMR spectrometry

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