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