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RESEARCH PRODUCT
Copolymerization of ethylene with norbornene or 1-octene using supported ionic liquid systems
Wioletta Ochędzan-siodłakAnna Bihunsubject
EthyleneMaterials scienceChemistry(all)Polymers and Plastics02 engineering and technologyIonic liquid010402 general chemistry01 natural scienceschemistry.chemical_compoundCrystallinityCopolymerizationPolymer chemistryCopolymerMaterials ChemistryNorbornene1-OcteneComonomerSilicaGeneral ChemistryPolyolefins021001 nanoscience & nanotechnologyCondensed Matter Physics0104 chemical scienceschemistryVanadium catalystIonic liquid0210 nano-technologyMetallocenedescription
Copolymerization of ethylene with norbornene (E/NB) and ethylene with 1-octene (E/Oct) is performed using supported ionic liquid (SIL) systems, in which metallocene (Cp2VCl2) or post-metallocene [VCl2(salenCl2)] vanadium catalysts are immobilized in pyridinium chloroaluminate ionic liquid supported on silica. The studied SIL catalysts show higher activities as well as stability than their non-supported analogues. In addition, higher activities and better comonomer incorporation are observed for norbornene (above 30 mol%). The comonomer incorporation has considerable influence on copolymer molecular weight (M w), melting temperature, crystallinity degree, and microstructure of the copolymers. Molecular-weight distribution is relatively narrow (1.5 ≤ M w /M n ≤ 3.0), which indicates the presence of single-site catalyst systems.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-11-30 | Polymer Bulletin |