Long-Spaced Polyketones from ADMET Copolymerizations as Ideal Models for Ethylene/CO Copolymers
Abstract
Long-spaced polyketones containing 0–52.6 ketone groups per 1000 methylene units were prepared by ADMET copolymerization of docosa-1,21-dien-11-one ( 1 ) with undeca-1,10-diene ( 2 ), followed by exhaustive hydrogenation. Melting point differences of 5–10 °C were found between these polyketones and their reported congeners from ethylene/CO copolymerizations with comparable CO contents, which were related to additional methyl branching occurring in insertion copolymerization. Consequently, ADMET-derived polyketones can act as defect-free model polyketones. Comparison with polymers containing the same degrees of other carbonyl functionalities (esters, carbonates) shows that the partial compensation of the disturbance of polyethylene crystallization goes along with the groups’ polarity.
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Low concentrations of keto groups are anticipated to not disturb the crystalline order in linear polyethylenes due to their ability to accommodate into the polyethylene crystal lattice.
“Due to their ability to accomodate into the polyethylene crystal lattice, 6 low concentrations of keto groups are anticipated to not disturb the crystalline order in linear polyethylenes.”
From Polyethylene materials with in-chain ketones from nonalternating catalytic copolymerization (2021) · cites this paper as [6]
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Stempfle, F., Ortmann, P., & Mecking, S. (2016) · Chemical Reviews · doi:10.1021/acs.chemrev.5b00705 · Cited by 397 · see citing works
Self-citationPolyethylene materials with in-chain ketones from nonalternating catalytic copolymerization
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- Authors
- Ortmann, P., Wimmer, F. P., & Mecking, S.
- Affiliations
- University of Konstanz (DE)
- Corresponding author
- Mecking, Stefan
- Venue
- ACS Macro Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2015-06-19
- Volume
- 4
- Issue
- 7
- Pages
- 704-707
- ISSN
- 2161-1653 (ISSN-L)
- OpenAlex
- W900578850
- Cited by
- 52
- References
- 27
- Citations by year
- 2026: 7 · 2025: 8 · 2024: 10 · 2023: 4 · 2022: 3 · 2021: 5 · 2020: 3 · 2019: 6 · 2018: 1 · 2017: 1 · 2016: 3 · 2015: 1
- FWCI
- 1.28
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- ACS Macro Letters (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Materials Science › Polymers and Plastics › Polymer crystallization and properties
- Physical Sciences › Materials Science › Biomaterials › biodegradable polymer synthesis and properties
- Physical Sciences › Chemistry › Organic Chemistry › Advanced Polymer Synthesis and Characterization
- Keywords
- methyl branching, melting point, polyethylene crystallization, model polymers
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