Ethylene Homo-and Copolymerization Using a Bis-IndZrcl2 Metallocene Catalyst: Structural Composition Distribution of the Copolymer
نویسنده:
, , , , , ,سال
: 2009
چکیده: A bis-IndZrCl2 catalyst was synthesized and used for ethylene homo- and copolymerization.
The activity of the catalyst increases with increasing Al/Zr ratio; optimum activity was
reached at 60 8C. Mv of the polymer decreased as the polymerization temperature increased;
increasing reaction pressure increased bothMv
and catalyst activity. The copolymerization of
ethylene with different a-olefins was studied
using the same catalyst system. The results
indicate that under identical conditions there
was a general decrease in the rate of polymeri-
zation as compared to the homopolymeriza-
tion. The CCD and the lamellar thickness were
investigated using DSC. The heterogeneity of
the CCD increasedwith increasing comonomer
content and molar mass.
The activity of the catalyst increases with increasing Al/Zr ratio; optimum activity was
reached at 60 8C. Mv of the polymer decreased as the polymerization temperature increased;
increasing reaction pressure increased bothMv
and catalyst activity. The copolymerization of
ethylene with different a-olefins was studied
using the same catalyst system. The results
indicate that under identical conditions there
was a general decrease in the rate of polymeri-
zation as compared to the homopolymeriza-
tion. The CCD and the lamellar thickness were
investigated using DSC. The heterogeneity of
the CCD increasedwith increasing comonomer
content and molar mass.
کلیدواژه(گان): comonomer composion distribution,ethylene/ a-olefin copolymerization,metallocene,polyethylene,structural analysis
کالکشن
:
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آمار بازدید
Ethylene Homo-and Copolymerization Using a Bis-IndZrcl2 Metallocene Catalyst: Structural Composition Distribution of the Copolymer
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| contributor author | M.Mortazavi | en |
| contributor author | H. Arabi | en |
| contributor author | غلامحسین ظهوری | en |
| contributor author | S. Ahmadjo | en |
| contributor author | M. Nekoomanesh | en |
| contributor author | M. Ahmadi | en |
| contributor author | Gholamhossein Zohuri | fa |
| date accessioned | 2020-06-06T14:05:12Z | |
| date available | 2020-06-06T14:05:12Z | |
| date issued | 2009 | |
| identifier uri | https://libsearch.um.ac.ir:443/fum/handle/fum/3381814 | |
| description abstract | A bis-IndZrCl2 catalyst was synthesized and used for ethylene homo- and copolymerization. The activity of the catalyst increases with increasing Al/Zr ratio; optimum activity was reached at 60 8C. Mv of the polymer decreased as the polymerization temperature increased; increasing reaction pressure increased bothMv and catalyst activity. The copolymerization of ethylene with different a-olefins was studied using the same catalyst system. The results indicate that under identical conditions there was a general decrease in the rate of polymeri- zation as compared to the homopolymeriza- tion. The CCD and the lamellar thickness were investigated using DSC. The heterogeneity of the CCD increasedwith increasing comonomer content and molar mass. | en |
| language | English | |
| title | Ethylene Homo-and Copolymerization Using a Bis-IndZrcl2 Metallocene Catalyst: Structural Composition Distribution of the Copolymer | en |
| type | Journal Paper | |
| contenttype | External Fulltext | |
| subject keywords | comonomer composion distribution | en |
| subject keywords | ethylene/ a-olefin copolymerization | en |
| subject keywords | metallocene | en |
| subject keywords | polyethylene | en |
| subject keywords | structural analysis | en |
| journal title | Macromolecular Reaction Engineering | fa |
| pages | 263-270 | |
| journal volume | 3 | |
| journal issue | 0 | |
| identifier link | https://profdoc.um.ac.ir/paper-abstract-1011860.html | |
| identifier articleid | 1011860 |