Cited by 67Organometallic Complex Synthesis and CatalysisAdvanced Polymer Synthesis and Characterizationbiodegradable polymer synthesis and properties

cis‐1,4‐Selective Copolymerization of Ethylene and Butadiene: A Compromise between Two Mechanisms

Wu, Chunji, Liu, Bo, Lin, Fei, Wang, Meiyan, Cui, Dongmei·2017·Angewandte Chemie International Edition

Abstract

Introducing ethylene units into polybutadiene backbones is an approach to synthesize advanced rubber materials, which has been a research challenge because of distinct polymerization mechanisms of the two monomers. To date, only trans‐1,4‐ and 1,2‐regulated copolymers have been obtained. Herein, we reported the unprecedented cis‐1,4 selective copolymerization of ethylene and butadiene by using the thiophene‐fused cyclopentadienyl‐ligated scandium complexes. The effects of the sterics and electronics of the catalytic precursors as well as the monomer loading mode on the activity and selectivity as well as the sequence lengths were investigated, and the mechanism was elucidated. Thus a novel ethylene‐based rubber material possessing a high molecular weight, 80 % cis‐1,4 regularity and a Tg=−94 °C without an obvious melting point owing to short polyethylene sequences even at its content up to 45 mol %, was isolated. This new rubber material exhibited excellent anti‐flowing performance and strong tensile strength.

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Crossref · 10.1002/anie.201702128

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Authors
Wu, C., Liu, B., Lin, F., Wang, M., & Cui, D.
Affiliations
Chinese Academy of Sciences (CN)
Corresponding author
Cui, Dongmei
Venue
Angewandte Chemie International Edition
Publisher
Wiley
Published
2017-05-04
Volume
56
Issue
24
Pages
6975-6979
ISSN
  • 1433-7851 (ISSN-L)
  • 1521-3773
OpenAlex
W2611816416
Cited by
67
References
43
Citations by year
2026: 4 · 2025: 11 · 2024: 11 · 2023: 9 · 2022: 4 · 2021: 8 · 2020: 6 · 2019: 8 · 2018: 3 · 2017: 3
FWCI
2.28
Type
journal article
Language
en
Open access
closed
Locations
  • Angewandte Chemie International Edition (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Natural Science Foundation of China (21634007, 51673184, 21374112, 21644010)
Topics
  • Physical Sciences › Chemistry › Organic Chemistry › Organometallic Complex Synthesis and Catalysis
  • Physical Sciences › Chemistry › Organic Chemistry › Advanced Polymer Synthesis and Characterization
  • Physical Sciences › Materials Science › Biomaterials › biodegradable polymer synthesis and properties
Keywords
cis-1,4 selectivity, polybutadiene, scandium complexes, polymerization mechanism, sequence length, glass transition temperature, tensile strength

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