Item

Synthesis and characterisation of propene/higher 1-olefin copolymers with the catalyst system (CH3)2Si(2-methylbenz[e]indenyl)2ZrCl2/MAO.

BrĂ¼ll, Robert
; 
Luruli, Nyambeni
; 
Pasch, Harald
; 
Raubenheimer, Helgard G.
; 
Sadiku, E. Rotimi
; 
Sanderson, Ron
; 
van Reenen, Albert J.
; 
Wahner, Udo M.
Citations
Altmetric:
Abstract
The melting and crystallization behaviour of random copolymers of propene with 1-butene, 1-pentene and 1-hexene synthesized with the catalyst system (CH3)2Si(2-methylbenz[e]indenyl)2ZrCl2/methylaluminoxane (MAO) were investigated by differential scanning calorimetry and crystallization analysis fractionation (CRYSTAF). The melting and crystallization temperatures decreased linearly with increasing comonomer content. The depressions of the melting and crystallization temperatures are strongly dependent on the nature of the monomer and are more pronounced for copolymers of propene with 1-hexene than with 1-butene. In comparison to 1-hexene and 1-butene, the incorporation of 1-pentene leads to an intermediate behaviour. This is in contrast to the behaviour of copolymers of propene with longer chain 1-olefins, where the melting and crystallization temperatures are independent of the comonomer type. The depressant effects of the amount of comonomer incorporated on the melting and the crystallization temperatures are equal.
Description
Date
2003-11-20
Journal Title
Journal ISSN
Volume Title
Publisher
De Gruyter
Collections
Department of Chemical, Metallurgical and Materials Engineering -Research Articles
Show all metadata
Files
Sadiku 146.pdf
Adobe PDF, 159.08 KB
Research Projects
Organizational Units
Journal Issue
Keywords
Melting and crystallization, Crystallization analysis fractionation (CRYSTAF), (CH3)2Si(2-methylbenz[e]indenyl)2ZrCl2/MAO
Citation
URI
https://hdl.handle.net/20.500.14519/2403
Embedded videos