Study of the Effect of Internal Donors Composition in the Titanium–Magnesium Catalysts on the Molecular Weight Distribution of Polyethylene, Polypropylene, and Polyhexene | Sciact - CRIS-system of Boreskov Institute of Catalysis

Study of the Effect of Internal Donors Composition in the Titanium–Magnesium Catalysts on the Molecular Weight Distribution of Polyethylene, Polypropylene, and Polyhexene Full article

Journal

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

Output data

Year: 2025, DOI: 10.1002/app.57022

Funding (1)

Ministry of Science and Higher Education of the Russian Federation

FWUR-2024-0037

New experimental data were obtained on the effect of internal donors composition (di-n-butyl phthalate, diethyl 2,3-diisobutyl succinate and 2-isopropyl-2-isopentyl-1,3-dimethoxypropane) in the titanium–magnesium catalysts (TMCs) on the molecular weight distribution of polyethylene, polypropylene, and polyhexene produced over these catalysts during polymerization in the absence and in the presence of hydrogen. These data show the great effect of monomer structure and the presence of hydrogen at the polymerization of α-olefins on the molecular weight distribution (polydispersity) of polymers. We propose these results are determined by the heterogeneity of active sites with different regiospecificity in the chain transfer reaction with hydrogen at the polymerization of α-olefins.

Matsko M.A. , Echevskaya L.G. , Barabanov A.A. , Zakharov V.A.
Study of the Effect of Internal Donors Composition in the Titanium–Magnesium Catalysts on the Molecular Weight Distribution of Polyethylene, Polypropylene, and Polyhexene
Journal of Applied Polymer Science. 2025. DOI: 10.1002/app.57022 WOS Scopus AN OpenAlex

Submitted:	Nov 6, 2024
Accepted:	Mar 9, 2025
Published online:	Mar 26, 2025

Web of science:	WOS:001451573600001
Scopus:	2-s2.0-105001568316
Chemical Abstracts:	2025:730316
OpenAlex:	W4408935497

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