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Formation of Branched Polyethylenes by Ethylene Homopolymerization Using LNiBr2 Homo- and Heterogeneous Precatalysts: Interpretation of the Polymer Structures in Comparison with Commercial LLDPE Full article

Общее Language: Английский, Genre: Full article,
Status: In Press, Source type: Original
Journal Journal of Applied Polymer Science
ISSN: 0021-8995 , E-ISSN: 1097-4628
Output data Year: 2021, Article number : 50436, Pages count : 13 DOI: 10.1002/app.50436
Tags catalysts, mechanical properties, polyolefins, structure-property relationships, thermal properties
Authors Matsko Mikhail A. 1 , Semikolenova Nina V. 1 , Zakharov Vladimir A. 1,2 , Soshnikov Igor E. 1,2 , Shundrina Inna K. 3 , Sun Wen‐Hua 4,5
Affiliations
1 Boreskov Institute of Catalysis, SB RAS, Novosibirsk, Russia
2 Novosibirsk State University, Novosibirsk, Russia
3 N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS, Novosibirsk, Russia
4 Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
5 CAS Research/Education Center for Excellence in Molecular Sciences, University of Chinese Academy of Sciences, Beijing, China

Funding (2)

1 Russian Foundation for Basic Research 18-53-80031
2 Ministry of Science and Higher Education of the Russian Federation ГЗ-2017-2020

Abstract: Comparative data on the micro‐structures and properties of branched polyethylenes (BPE) produced via ethylene homopolymerization over homogeneous N,N‐α‐diimine LNiBr2 complexes with different ligand composition (AlEt2Cl as a cocatalyst) and corresponding supported catalysts LNiBr2/SiO2(Al) (Al[iso‐Bu]3 as a cocatalyst) are presented. Noticeable differences were observed between micro‐structures of BPEs obtained using homo‐ and heterogeneous LNiBr2 complexes as catalysts. Supported catalysts produce BPEs with the majority of methyl branches (17–18 CH3(1000 C)−1 characterized by different molecular masses (1800–210 kg mol−1) and molecular weight distributions (Mw[Mn]−1 = 5.9 and 2.6). Thermal and mechanical properties of these BPE samples obtained over supported Ni catalysts are similar to those of commercial LLDPE samples prepared with metallocene and Ziegler‐Natta catalysts.
Cite: Matsko M.A. , Semikolenova N.V. , Zakharov V.A. , Soshnikov I.E. , Shundrina I.K. , Sun W.
Formation of Branched Polyethylenes by Ethylene Homopolymerization Using LNiBr2 Homo- and Heterogeneous Precatalysts: Interpretation of the Polymer Structures in Comparison with Commercial LLDPE
Journal of Applied Polymer Science. 2021. 50436 :1-13. DOI: 10.1002/app.50436 publication_identifier_short.wos_identifier_type publication_identifier_short.scopus_identifier_type
Dates:
Submitted: Jul 2, 2020
Accepted: Dec 18, 2020
Published online: Jan 6, 2021
Published print: May 20, 2021
Identifiers:
publication_identifier.wos_identifier_type WOS:000605061600001
publication_identifier.scopus_identifier_type 2-s2.0-85099061269
publication_identifier.accession_number_identifier_type 2021:84019
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