Analysis of the Molecular Structure of Ethylene Hexene-1 Copolymers Produced over Highly Active Supported Ziegler-Natta Catalysts
Научная публикация
| Общая информация |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Переводная
|
| Журнал |
Catalysis in Industry
ISSN: 2070-0504
, E-ISSN: 2070-0555
|
| Вых. Данные |
Год: 2011,
Том: 3,
Номер: 2,
Страницы: 109-115
Страниц
: 7
DOI:
10.1134/S2070050411020097
|
| Ключевые слова |
Differential scanning calorimetry, Ethylene hexene-1 copolymer, Fractionation, Gel permeation chromatography, Molecular structure, Molecular weight distribution, Polyethylene, Ti-Mg catalyst, V-Mg catalyst, Ziegler-Natta catalyst |
| Авторы |
Matsko M.A.
1
,
Echevskaya L.G.
1
,
Mikenas T.B.
1
,
Nikolaeva M.I.
1
,
Vanina M.P.
1
,
Zakharov V.A.
1
|
| Организации |
| 1 |
Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
|
|
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.