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dc.contributor.authorAtiqullah, Muhammad
dc.contributor.authorAdamu, Sagir
dc.contributor.authorMalaibari, Zuhair O.
dc.contributor.authorAl-Harthi, Mamdouh A.
dc.contributor.authorEmwas, Abdul-Hamid M.
dc.date.accessioned2016-01-18T07:56:42Z
dc.date.available2016-01-18T07:56:42Z
dc.date.issued2016-01-26
dc.identifier.citation(nBuCp)2ZrCl2-catalyzed Ethylene-4M1P Copolymerization: Copolymer Backbone Structure, Melt Behavior, and Crystallization 2016:n/a AIChE Journal
dc.identifier.issn00011541
dc.identifier.doi10.1002/aic.15159
dc.identifier.urihttp://hdl.handle.net/10754/593662
dc.description.abstractThe judicious design of methylaluminoxane (MAO) anions expands the scope for developing industrial metallocene catalysts. Therefore, the effects of MAO anion design on the backbone structure, melt behavior, and crystallization of ethylene−4-methyl-1-pentene (E−4M1P) copolymer were investigated. Ethylene was homopolymerized, as well as copolymerized with 4M1P, using (i) MAO anion A (unsupported [MAOCl2]−) premixed with dehydroxylated silica, (nBuCp)2ZrCl2, and Me2SiCl2; and (ii) MAO anion B (Si−O−Me2Si−[MAOCl2]−) supported with (nBuCp)2ZrCl2 on Me2SiCl2-functionalized silica. Unsupported Me2SiCl2, opposite to the supported analogue, acted as a co-chain transfer agent with 4M1P. The modeling of polyethylene melting and crystallization kinetics, including critical crystallite stability, produced insightful results. This study especially illustrates how branched polyethylene can be prepared from ethylene alone using particularly one metallocene-MAO ion pair, and how a compound, that functionalizes silica as well as terminates the chain, can synthesize ethylene−α-olefin copolymers with novel structures. Hence, it unfolds prospective future research niches in polyethyne systhesis. This article is protected by copyright. All rights reserved.
dc.language.isoen
dc.publisherWiley
dc.relation.urlhttp://doi.wiley.com/10.1002/aic.15159
dc.rightsThis is the peer reviewed version of the following article: Atiqullah, M., Adamu, S., Malaibari, Z. O., Al-Harthi, M. A. and Emwas, A.-H. M. (2016), (nBuCp)2ZrCl2-catalyzed Ethylene-4M1P Copolymerization: Copolymer Backbone Structure, Melt Behavior, and Crystallization. AIChE J.. Accepted Author Manuscript. doi:10.1002/aic.15159, which has been published in final form at http://doi.wiley.com/10.1002/aic.15159. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.
dc.title(nBuCp)2ZrCl2-catalyzed Ethylene-4M1P Copolymerization: Copolymer Backbone Structure, Melt Behavior, and Crystallization
dc.typeArticle
dc.contributor.departmentImaging and Characterization Core Lab
dc.contributor.departmentNMR
dc.identifier.journalAIChE Journal
dc.eprint.versionPost-print
dc.contributor.institutionCenter for Refining and Petrochemicals, Research Institute, King Fahd University of Petroleum & Minerals; Dhahran 31261 Saudi Arabia
dc.contributor.institutionDepartment of Chemical Engineering; King Fahd University of Petroleum & Minerals; Dhahran 31261 Saudi Arabia
dc.contributor.institutionDepartment of Chemical Engineering; King Fahd University of Petroleum & Minerals; Dhahran 31261 Saudi Arabia
dc.contributor.institutionDepartment of Chemical Engineering; King Fahd University of Petroleum & Minerals; Dhahran 31261 Saudi Arabia
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)
kaust.personEmwas, Abdul-Hamid M.
refterms.dateFOA2017-01-08T00:00:00Z
dc.date.published-online2016-01-26
dc.date.published-print2016-05


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