Effect of immobilization of titanocene catalyst in aralkyl imidazolium chloroaluminate media on oerformance of biphasic ethylene polymerization and polyethylene properites
PBN-AR
Instytucja
Wydział Chemii (Uniwersytet Opolski)
Informacje podstawowe
Główny język publikacji
en
Czasopismo
Polymer Bulletin
ISSN
0170-0839
EISSN
Wydawca
DOI
URL
Rok publikacji
2013
Numer zeszytu
1
Strony od-do
1-21
Numer tomu
70
Identyfikator DOI
Liczba arkuszy
1
Słowa kluczowe
en
polyethylene, ionic liquid, metallocene catalyst
Streszczenia
Język
en
Treść
1-(2-Phenylethyl)-3-methylimidazolium and 1-benzyl-3-methylimidazolium chloroaluminates, [Ph-C2mim][AlCl4] and [Bzlmim][AlCl4], were applied as media of the Cp2TiCl2 catalyst for biphasic ethylene polymerization. The studied aralkyl ionic liquids ensure greater stability of the catalyst at higher temperatures and more regular morphology of the produced polyethylene than analogous 1-n-alkyl-3-methylimidazolium chloroaluminates. The alkylaluminium compound participates in the termination reaction of the polymer chain. The catalyst is stable and enables recycling of the ionic liquid phase in the consecutive polymerization reactions. The [Ph-C2mim][AlCl4] ionic liquid and AlEt2Cl alkylaluminium compound turned out to be the most suitable for the biphasic process. The influence of the kind of ionic liquid, alkylaluminium compound (AlEt2Cl and AlEtCl2), activator/catalyst molar ratio, reaction temperature, reaction time and catalyst recycling on the polymerization performance as well as polyethylene properties such as molecular weight (Mw), polydispersity, melting temperature, crystallinity degree, bulk density and particle size is presented.
Inne
System-identifier
UO01873da694ae41e8a12e2a80437ab826
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