Formation of Branched Polyethylenes by Ethylene Homopolymerization Using LNiBr2 Homo- and Heterogeneous Precatalysts: Interpretation of the Polymer Structures in Comparison with Commercial LLDPE | Sciact - CRIS-system of Boreskov Institute of Catalysis

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

Journal

Journal of Applied Polymer Science
ISSN: 0021-8995 , E-ISSN: 1097-4628

Output data

Year: 2021, Volume: 138, Number: 20, 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 National Natural Science Foundation of China	18-53-80031 / 51861145303
2	Ministry of Science and Higher Education of the Russian Federation	ГЗ-2017-2020

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.

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. V.138. N20. 50436 :1-13. DOI: 10.1002/app.50436 WOS Scopus РИНЦ AN OpenAlex

Submitted:	Jul 2, 2020
Accepted:	Dec 18, 2020
Published online:	Jan 6, 2021
Published print:	May 20, 2021

Web of science:	WOS:000605061600001
Scopus:	2-s2.0-85099061269
Elibrary:	45020535
Chemical Abstracts:	2021:84019
OpenAlex:	W3120915530

DB	Citing
Scopus	7
Web of science	6
Elibrary	6
OpenAlex	7