AI Article Synopsis
- The study focuses on the use of a neutral -sulfonate--diimine nickel catalyst for the homopolymerization of norbornene, yielding high-molecular-weight polynorbornene (PNB).
- The catalyst also facilitates the copolymerization of norbornene and ethylene, resulting in copolymers with low levels of norbornene.
- Microstructure analyses reveal that the resulting copolymers are branched cyclo-olefin copolymers (COCs) containing branched polyethylene units.
Article Abstract
The homopolymerization of norbornene and the copolymerization of norbornene and ethylene were carried out using the neutral -sulfonate--diimine nickel catalyst . The neutral -sulfonate--diimine catalyst is highly active in the homopolymerization of norbornene, producing vinyl-addition polynorbornene (PNB) with a high molecular weight. The copolymerization of norbornene (NB) and ethylene (E) using the catalyst was also investigated. The -sulfonate--diimine catalyst shows distinctive catalytic copolymerization properties to produce high-molecular-weight E-NB copolymers with low norbornene incorporation. Importantly, microstructure analyses confirm that the resultant E-NB copolymers are branched cyclo-olefin copolymers (COCs) with branched polyethylene units.
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| http://dx.doi.org/10.3390/molecules30010157 | DOI Listing |
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