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Gao L, Ren H, Hou Y, Ye L, Meng H, Liu B, Yang M. Synthesis of High-Molecular-Weight Polypropylene Elastomer by Propylene Polymerization Using α-Diimine Nickel Catalysts. Polymers (Basel) 2024; 16:2376. [PMID: 39204595 PMCID: PMC11359258 DOI: 10.3390/polym16162376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2024] [Revised: 07/22/2024] [Accepted: 07/25/2024] [Indexed: 09/04/2024] Open
Abstract
The α-diimine late transition metal catalyst represents a new strategy for the synthesis of atactic polypropylene elastomer. Taking into account the properties of the material, enhancing the molecular weight of polypropylene at an elevated temperature through modifying the catalyst structure, and further increasing the activity of α-diimine catalyst for propylene polymerization, are urgent problems to be solved. In this work, two α-diimine nickel(II) catalysts with multiple hydroxymethyl phenyl substituents were synthesized and used for propylene homopolymerization. The maximum catalytic activity was 5.40 × 105 gPP/molNi·h, and the activity was still maintained above 105 gPP/molNi·h at 50 °C. The large steric hindrance of catalysts inhibited the chain-walking and chain-transfer reactions, resulting in polypropylene with high molecular weights (407~1101 kg/mol) and low 1,3-enchainment content (3.57~16.96%) in toluene. The low tensile strength (0.3~1.0 MPa), high elongation at break (218~403%) and strain recovery properties (S.R. ~50%, 10 tension cycles) of the resulting polypropylenes, as well as the visible light transmittance of approximately 90%, indicate the characteristics of the transparent elastomer.
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Affiliation(s)
- Lujie Gao
- Hebei Key Laboratory of Functional Polymers, Institute of Polymer Science and Engineering, Hebei University of Technology, Tianjin 300401, China
| | - Hegang Ren
- School of Material Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China
| | - Yanhui Hou
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Material Science and Engineering, Tiangong University, Tianjin 300160, China
| | - Linlin Ye
- Hebei Key Laboratory of Functional Polymers, Institute of Polymer Science and Engineering, Hebei University of Technology, Tianjin 300401, China
| | - Hao Meng
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Material Science and Engineering, Tiangong University, Tianjin 300160, China
| | - Binyuan Liu
- Hebei Key Laboratory of Functional Polymers, Institute of Polymer Science and Engineering, Hebei University of Technology, Tianjin 300401, China
| | - Min Yang
- Hebei Key Laboratory of Functional Polymers, Institute of Polymer Science and Engineering, Hebei University of Technology, Tianjin 300401, China
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2
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Wu R, Klingler Wu W, Stieglitz L, Gaan S, Rieger B, Heuberger M. Recent advances on α-diimine Ni and Pd complexes for catalyzed ethylene (Co)polymerization: A comprehensive review. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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3
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Eagan JM, Padilla-Vélez O, O’Connor KS, MacMillan SN, LaPointe AM, Coates GW. Chain-Straightening Polymerization of Olefins to Form Polar Functionalized Semicrystalline Polyethylene. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- James M. Eagan
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, United States
| | - Omar Padilla-Vélez
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, United States
| | - Kyle S. O’Connor
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, United States
| | - Samantha N. MacMillan
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, United States
| | - Anne M. LaPointe
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, United States
| | - Geoffrey W. Coates
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, United States
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4
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Effect of alkylaluminum structure and aggregation state on the micro-kinetics of ethylene polymerization catalyzed by α-diimine nickel complex. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.120900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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5
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Wang X, Feng Z, Guo W, Zhong W, Liu X, Wang C, Fu Z, Fan Z. Improvement of Catalytic Activity for
α
‐Diimine Nickel Complex with Active Sites Stabilized by Bulky Boron Counterions at Elevated Temperature. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6599] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xueer Wang
- Department of Polymer Science and Engineering MOE Key Laboratory of Macromolecular Synthesis and Functionalization Hangzhou China
| | - Zhongwei Feng
- Department of Polymer Science and Engineering MOE Key Laboratory of Macromolecular Synthesis and Functionalization Hangzhou China
| | - Wenqi Guo
- Department of Polymer Science and Engineering MOE Key Laboratory of Macromolecular Synthesis and Functionalization Hangzhou China
| | - Wentao Zhong
- Department of Polymer Science and Engineering MOE Key Laboratory of Macromolecular Synthesis and Functionalization Hangzhou China
| | - Xiaoyu Liu
- Department of Polymer Science and Engineering MOE Key Laboratory of Macromolecular Synthesis and Functionalization Hangzhou China
| | - Cheng Wang
- Department of Polymer Science and Engineering MOE Key Laboratory of Macromolecular Synthesis and Functionalization Hangzhou China
| | - Zhisheng Fu
- Department of Polymer Science and Engineering MOE Key Laboratory of Macromolecular Synthesis and Functionalization Hangzhou China
| | - Zhiqiang Fan
- Department of Polymer Science and Engineering MOE Key Laboratory of Macromolecular Synthesis and Functionalization Hangzhou China
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6
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Nazarov IV, Bermesheva EV, Potapov KV, Khesina ZB, Il'in MM, Melnikova EK, Bermeshev MV. Palladium complex with tetrahydronaphthyl-substituted diimine ligand as a catalyst for polymerization of norbornenes and diazoacetates. MENDELEEV COMMUNICATIONS 2021. [DOI: 10.1016/j.mencom.2021.09.032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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7
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Reversion of the chain walking ability of α-diimine nickel and palladium catalysts with bulky diarylmethyl substituents. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2020.121649] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Unraveling Multiple Distributions in Chain Walking Polyethylene Using Advanced Liquid Chromatography. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00314] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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9
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Schnitte M, Scholliers JS, Riedmiller K, Mecking S. Remote Perfluoroalkyl Substituents are Key to Living Aqueous Ethylene Polymerization. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201913117] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Manuel Schnitte
- Chair of Chemical Materials Science Department of Chemistry University of Konstanz 78457 Konstanz Germany
| | - Janine S. Scholliers
- Chair of Chemical Materials Science Department of Chemistry University of Konstanz 78457 Konstanz Germany
| | - Kai Riedmiller
- Chair of Chemical Materials Science Department of Chemistry University of Konstanz 78457 Konstanz Germany
| | - Stefan Mecking
- Chair of Chemical Materials Science Department of Chemistry University of Konstanz 78457 Konstanz Germany
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10
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Schnitte M, Scholliers JS, Riedmiller K, Mecking S. Remote Perfluoroalkyl Substituents are Key to Living Aqueous Ethylene Polymerization. Angew Chem Int Ed Engl 2020; 59:3258-3263. [PMID: 31773825 PMCID: PMC7027523 DOI: 10.1002/anie.201913117] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 11/26/2019] [Indexed: 01/28/2023]
Abstract
In various nickel(II) salicylaldiminato ethylene polymerization catalysts, which are a versatile mechanistic probe for substituent effects, longer perfluoroalkyl groups exert a strong effect on catalytic activities and polymer microstructures compared to the trifluoromethyl group. This effect is accounted for by a reduced electron density on the active sites, and is also supported by electrochemical studies. Thus, β‐hydride elimination, the key step of chain transfer and branching pathways, is disfavored while chain‐growth rates are enhanced. This enhancement occurs to an extent that enables living polymerizations in aqueous systems to afford ultra‐high‐molecular‐weight polyethylene for various chelating salicylaldimine motifs. These findings are mechanistically instructive as well as practically useful for illustrating the potential of perfluoroalkyl groups in catalyst design.
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Affiliation(s)
- Manuel Schnitte
- Chair of Chemical Materials Science, Department of Chemistry, University of Konstanz, 78457, Konstanz, Germany
| | - Janine S Scholliers
- Chair of Chemical Materials Science, Department of Chemistry, University of Konstanz, 78457, Konstanz, Germany
| | - Kai Riedmiller
- Chair of Chemical Materials Science, Department of Chemistry, University of Konstanz, 78457, Konstanz, Germany
| | - Stefan Mecking
- Chair of Chemical Materials Science, Department of Chemistry, University of Konstanz, 78457, Konstanz, Germany
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11
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Vignesh A, Zhang Q, Ma Y, Liang T, Sun WH. Attaining highly branched polyethylene elastomers by employing modified α-diiminonickel(II) catalysts: Probing the effects of enhancing fluorine atom on the ligand framework towards mechanical properties of polyethylene. POLYMER 2020. [DOI: 10.1016/j.polymer.2019.122089] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Leone G, Canetti M, Pierro I, Zanchin G, De Rosa C, Ricci G, Bertini F. (Micro)structure, thermal behavior and mechanical properties of ethylene–propylene–1-octadecene terpolymers from chain-walking polymerization of 1-octadecene. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.01.029] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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13
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Wang F, Chen C. A continuing legend: the Brookhart-type α-diimine nickel and palladium catalysts. Polym Chem 2019. [DOI: 10.1039/c9py00226j] [Citation(s) in RCA: 186] [Impact Index Per Article: 37.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Here we will summarize some of the recent advances in α-diimine ligand developments, as well as some new and challenging monomers that this class of catalysts can address through these ligand improvements.
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Affiliation(s)
- Fuzhou Wang
- Institute of Physical Science and Information Technology
- Anhui University
- Hefei 230601
- Anhui
- China
| | - Changle Chen
- CAS Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei 230026
- China
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14
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Keyes A, Basbug Alhan HE, Ha U, Liu YS, Smith SK, Teets TS, Beezer DB, Harth E. Light as a Catalytic Switch for Block Copolymer Architectures: Metal–Organic Insertion/Light Initiated Radical (MILRad) Polymerization. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01719] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Anthony Keyes
- Department of Chemistry, Center of Excellence in Polymer Chemistry (CEPC), University of Houston, 3585 Cullen Boulevard, Houston, Texas 77030, United States
| | - Hatice E. Basbug Alhan
- Department of Chemistry, Center of Excellence in Polymer Chemistry (CEPC), University of Houston, 3585 Cullen Boulevard, Houston, Texas 77030, United States
| | - Uyen Ha
- Department of Chemistry, Center of Excellence in Polymer Chemistry (CEPC), University of Houston, 3585 Cullen Boulevard, Houston, Texas 77030, United States
| | - Yu-Sheng Liu
- Department of Chemistry, Center of Excellence in Polymer Chemistry (CEPC), University of Houston, 3585 Cullen Boulevard, Houston, Texas 77030, United States
| | - Scott K. Smith
- Department of Chemistry, Center of Excellence in Polymer Chemistry (CEPC), University of Houston, 3585 Cullen Boulevard, Houston, Texas 77030, United States
| | - Thomas S. Teets
- Department of Chemistry, Center of Excellence in Polymer Chemistry (CEPC), University of Houston, 3585 Cullen Boulevard, Houston, Texas 77030, United States
| | - Dain B. Beezer
- Department of Chemistry, Center of Excellence in Polymer Chemistry (CEPC), University of Houston, 3585 Cullen Boulevard, Houston, Texas 77030, United States
| | - Eva Harth
- Department of Chemistry, Center of Excellence in Polymer Chemistry (CEPC), University of Houston, 3585 Cullen Boulevard, Houston, Texas 77030, United States
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