Propylene Polymerization over Supported Ziegler-Natta Catalysts: Effect of Internal and External Donors on Distribution of Active Sites According to Stereospecificity
Научная публикация
| Общая информация |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Журнал |
Journal of Applied Polymer Science
ISSN: 0021-8995
, E-ISSN: 1097-4628
|
| Вых. Данные |
Год: 2018,
Том: 135,
Номер: 23,
Номер статьи
: 46291,
Страниц
: 10
DOI:
10.1002/app.46291
|
| Ключевые слова |
Catalysts, Polyolefins, Polypropylene, Separation techniques, Stereochemistry and tacticity, TREF-temperature rising elution fractions |
| Авторы |
Nikolaeva Marina
1
,
Matsko Mikhail
1
,
Zakharov Vladimir
1,2
|
| Организации |
| 1 |
Boreskov Institute of Catalysis, Prospect Lavrentieva, 5, Novosibirsk, Russia
|
| 2 |
Novosibirsk State University, Pirogova Str.2, Novosibirsk, Russia
|
|
Информация о финансировании (2)
|
1
|
Федеральное агентство научных организаций России
|
0303-2016-0009
|
|
2
|
Министерство образования и науки Российской Федерации
|
|
Data on the content of fractions with different microtacticities for polypropylene (PP) samples produced over three catalysts [the “donor-free” titanium–magnesium catalyst and catalysts with dibutyl phthalate and 1,3-diether(fluorene) used as internal donors] upon polymerization in the absence/presence of an external donor (ED) have been obtained by preparative temperature rising elution fractionation method. The effect of internal and EDs on the distribution of PP fractions with different microtacticity is discussed. Data on molecular weight and thermophysical characteristics were obtained for individual fractions with different microtacticities. Correlations were found between microtacticity, molecular weight, and the melting points of these fractions.