Chemistry

Selective Formation of Methyl Branches in Ethylene Polymerization Using a Low-Cost Nickel Catalyst

Author1, Author2, et al.

This research, conducted by Author1, Author2, and Author3, unveils a groundbreaking low-cost nickel(II) catalyst that selectively forms methyl branches in polyethylene with remarkable efficiency. Achieving over 200 branches per 1000 carbons while maintaining a 99% exclusive methyl branch pattern, this study could redefine polymer production processes.

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Abstract

This research demonstrates the highly selective formation of methyl branches in polyethylene using a low-cost nickel(II) catalyst (ipty-Ni) across a broad temperature range (30–90 °C). This catalyst allows for the production of polyethylenes with an ultrahigh number of methyl branches, exceeding 200 branches per 1000 carbons, while maintaining an exclusive methyl branch pattern (99%). The branch distribution is highly selective and predictable, as supported by NMR analysis and a statistical probability model. DFT calculations provide mechanistic insights into the selective branch formation.

Publisher

Nature Communications

Published On

Oct 26, 2022

Authors

Author1, Author2, Author3

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