DS/ISO 4504
Plastics – Polyethylene (PE) – Determination of co-monomer content by solution state 13C-NMR spectrometry
| Organization: | DS |
| Publication Date: | 20 June 2023 |
| Status: | active |
| Page Count: | 32 |
| ICS Code (Thermoplastic materials): | 83.080.20 |
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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