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
Tags
polyethylene
methyl branches
nickel catalyst
NMR analysis
DFT calculations
selective formation
branch distribution
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