Investigation of Ethylene/Butadiene Copolymers Microstructure by 1H and 13C NMR
Abstract
Ethylene and butadiene are copolymerized with neodymocene catalysts. In this paper, a complete 1 H and 13 C NMR analysis of ethylene/butadiene copolymers is reported for the first time. The results of this study show that the microstructure of copolymers depends on the cyclopentadienyl ligands of the catalyst. The presence of the trans -1,2-cyclohexane structure, formed by intramolecular cyclization, is detected and fully investigated by 2D NMR 1 H/ 13 C direct and long-range correlation.
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In P1, the 13C NMR resonances at 32.66 and 29.35 ppm are assigned to Tαδ and Tβγ carbons of alternating trans-1,4 BD/E (TET) units, and multiplets around 41.32 and 39.02 ppm are attributed to continuous 1,2-BD units (V).
“For P1, the resonances appearing at 32.66 and 29.35 ppm are assigned to Tαδ and Tβγ carbons of the alternating trans-1,4 BD/E (TET) unit,47 while the multiplets around 41.32 and 39.02 ppm are attributed to the continuous 1,2-BD units (V).”
From Installing a Trigger to Upcycle High-Density Polyethylene (2024) · cites this paper as [47]
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Installing a Trigger to Upcycle High-Density Polyethylene
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- Authors
- Llauro, M. F., Monnet, C., Barbotin, F., Monteil, V., Spitz, R., & Boisson, C.
- Affiliations
- Centre National de la Recherche Scientifique (FR)
- Venue
- Macromolecules
- Publisher
- American Chemical Society (ACS)
- Published
- 2001-08-01
- Volume
- 34
- Issue
- 18
- Pages
- 6304-6311
- ISSN
- 0024-9297 (ISSN-L)
- 1520-5835
- OpenAlex
- W1675244922
- Cited by
- 60
- References
- 19
- Citations by year
- 2026: 2 · 2025: 3 · 2024: 5 · 2023: 2 · 2022: 1 · 2021: 3 · 2020: 2 · 2019: 3 · 2018: 3 · 2017: 6 · 2016: 1 · 2015: 3 · 2013: 2 · 2012: 1
- FWCI
- 1.34
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Macromolecules (publishedVersion)
- HAL (submittedVersion)
- Funders
- Thermal and Electric Energy Technology Foundation
- Topics
- Physical Sciences › Chemistry › Organic Chemistry › Organometallic Complex Synthesis and Catalysis
- Physical Sciences › Materials Science › Polymers and Plastics › Polymer Synthesis and Characterization
- Physical Sciences › Chemistry › Organic Chemistry › Advanced Polymer Synthesis and Characterization
- Keywords
- copolymer microstructure, cyclopentadienyl ligands, intramolecular cyclization, 2D NMR
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