Analysis of the molecular structure of ethylene hexene-1 copolymers produced over highly active supported Ziegler-Natta catalysts

Autor:	Vladimir A. Zakharov, Marina I. Nikolaeva, L. G. Echevskaya, T. B. Mikenas, M. P. Vanina, Mikhail A. Matsko
Rok vydání:	2011
Předmět:	chemistry.chemical_classification Materials science biology Comonomer Supramolecular chemistry Polymer Natta Polyethylene biology.organism_classification Branching (polymer chemistry) Catalysis chemistry.chemical_compound chemistry Hexene Polymer chemistry Ziegler–Natta catalyst
Zdroj:	Catalysis in Industry. 3:109-115
ISSN:	2070-0555 2070-0504
DOI:	10.1134/s2070050411020097
Popis:	The mechanical and rheological properties of ethylene α-olefin copolymers are governed by a molecular and supramolecular structure that depends on its molecular weight characteristics, comonomer concentration, and the uniformity of branching distributions for polymer chains with different molecular weights (compositional heterogeneity). Using state-of-the-art methods, we study the parameters of molecular weight distribution, molecular structure, and compositional heterogeneity of ethylene hexene-1 copolymers with different compositions, produced over highly active supported Ti-Mg and V-Mg Ziegler-Natta catalysts, and show the possibility of controlling these parameters to improve the quality of the resulting polymers.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8ed17886f3d482bfe06cb8dd088380fb https://doi.org/10.1134/s2070050411020097 Zobrazit plný text záznamu Full text from SpringerLink