Controlled Chain-Walking Polymerization in the Gas Phase to Ultrahigh Molecular Weight Polyethylene.

Yan Wang, Shuaikang Li, Mengyao Zhang, Shengyu Dai

Abstract read

In one paragraph

Article in Precision chemistry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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1citing papers in PubMed

–field-weighted citation impact

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3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

Gas-Phase Synthesis of Hyperbranched UHMWPE by Enhancing Chain Walking and Minimizing Chain Transfer.Chemistry (Weinheim an der Bergstrasse, Germany) · 2026
Article

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5 · Who and what money

Authors and funding

4 authors.

Yan WangAnhui Laboratory of Molecule-Based Materials, Key Laboratory of Functional Molecular Solids, Ministry of Education, School of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China.

Shuaikang LiInstitutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui 230601, China.

Mengyao ZhangInstitutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui 230601, China.

Shengyu DaiAnhui Laboratory of Molecule-Based Materials, Key Laboratory of Functional Molecular Solids, Ministry of Education, School of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China.ORCID https://orcid.org/0000-0003-4110-7691

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This study presents an unconventional approach for the gas-phase synthesis of ultrahigh molecular weight polyethylene (UHMWPE) using sterically hindered 2,6-bis-(diarylmethyl) α-diimine palladium-(II) catalysts. By leveraging a self-supported chain-walking polymerization mechanism, the catalysts form thin films on reactor walls, enabling efficient ethylene polymerization without solvents. The gas-phase chain-walking mechanism facilitates the migration of palladium species within the porous polymer matrix, enabling them to locate and access optimal sites for ethylene capture and subsequent insertion. The distal substituents on the catalysts were systematically varied to investigate their electronic and steric effects on polymerization activity, molecular weight, and branching density. Under optimized conditions (6 atm ethylene, 25 °C), the catalysts achieved high activity (up to 3.90 × 10

Indexed as

chain-walkingethylene polymerizationgas-phase polymerizationpalladium catalystsUHMWPE

Identifiers

PMID41613575

DOI10.1021/prechem.5c00067

PMCPMC12848813

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