Synthesis of Branched Cyclo-Olefin Copolymers Using Neutral <i>α</i>-Sulfonate-<i>β</i>-Diimine Nickel Catalyst
The homopolymerization of norbornene and the copolymerization of norbornene and ethylene were carried out using the neutral <i>α</i>-sulfonate-<i>β</i>-diimine nickel catalyst <b>SD-Ni</b>. The neutral <i>α</i>-sulfonate-<i>β</i>-diimine ca...
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MDPI AG
2025-01-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/30/1/157 |
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| author | Donghui Li Lixia Pei Wenbo Du Xieyi Xiao Heng Gao Handou Zheng Haiyang Gao |
| author_facet | Donghui Li Lixia Pei Wenbo Du Xieyi Xiao Heng Gao Handou Zheng Haiyang Gao |
| author_sort | Donghui Li |
| collection | DOAJ |
| description | The homopolymerization of norbornene and the copolymerization of norbornene and ethylene were carried out using the neutral <i>α</i>-sulfonate-<i>β</i>-diimine nickel catalyst <b>SD-Ni</b>. The neutral <i>α</i>-sulfonate-<i>β</i>-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 <b>SD-Ni</b> was also investigated. The <i>α</i>-sulfonate-<i>β</i>-diimine catalyst <b>SD-Ni</b> 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. |
| format | Article |
| id | doaj-art-798ddc8b1b7a4c64a492d46b65510535 |
| institution | Kabale University |
| issn | 1420-3049 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj-art-798ddc8b1b7a4c64a492d46b655105352025-01-10T13:19:03ZengMDPI AGMolecules1420-30492025-01-0130115710.3390/molecules30010157Synthesis of Branched Cyclo-Olefin Copolymers Using Neutral <i>α</i>-Sulfonate-<i>β</i>-Diimine Nickel CatalystDonghui Li0Lixia Pei1Wenbo Du2Xieyi Xiao3Heng Gao4Handou Zheng5Haiyang Gao6School of Materials Science and Engineering, PCFM Lab, GD HPPC Lab, Sun Yat-sen University, Guangzhou 510275, ChinaSchool of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, ChinaSchool of Materials Science and Engineering, PCFM Lab, GD HPPC Lab, Sun Yat-sen University, Guangzhou 510275, ChinaSchool of Materials Science and Engineering, PCFM Lab, GD HPPC Lab, Sun Yat-sen University, Guangzhou 510275, ChinaSchool of Materials Science and Engineering, PCFM Lab, GD HPPC Lab, Sun Yat-sen University, Guangzhou 510275, ChinaSchool of Materials Science and Engineering, PCFM Lab, GD HPPC Lab, Sun Yat-sen University, Guangzhou 510275, ChinaSchool of Materials Science and Engineering, PCFM Lab, GD HPPC Lab, Sun Yat-sen University, Guangzhou 510275, ChinaThe homopolymerization of norbornene and the copolymerization of norbornene and ethylene were carried out using the neutral <i>α</i>-sulfonate-<i>β</i>-diimine nickel catalyst <b>SD-Ni</b>. The neutral <i>α</i>-sulfonate-<i>β</i>-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 <b>SD-Ni</b> was also investigated. The <i>α</i>-sulfonate-<i>β</i>-diimine catalyst <b>SD-Ni</b> 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.https://www.mdpi.com/1420-3049/30/1/157cyclo-olefin copolymernorborneneethylenenickel catalystcopolymerization |
| spellingShingle | Donghui Li Lixia Pei Wenbo Du Xieyi Xiao Heng Gao Handou Zheng Haiyang Gao Synthesis of Branched Cyclo-Olefin Copolymers Using Neutral <i>α</i>-Sulfonate-<i>β</i>-Diimine Nickel Catalyst Molecules cyclo-olefin copolymer norbornene ethylene nickel catalyst copolymerization |
| title | Synthesis of Branched Cyclo-Olefin Copolymers Using Neutral <i>α</i>-Sulfonate-<i>β</i>-Diimine Nickel Catalyst |
| title_full | Synthesis of Branched Cyclo-Olefin Copolymers Using Neutral <i>α</i>-Sulfonate-<i>β</i>-Diimine Nickel Catalyst |
| title_fullStr | Synthesis of Branched Cyclo-Olefin Copolymers Using Neutral <i>α</i>-Sulfonate-<i>β</i>-Diimine Nickel Catalyst |
| title_full_unstemmed | Synthesis of Branched Cyclo-Olefin Copolymers Using Neutral <i>α</i>-Sulfonate-<i>β</i>-Diimine Nickel Catalyst |
| title_short | Synthesis of Branched Cyclo-Olefin Copolymers Using Neutral <i>α</i>-Sulfonate-<i>β</i>-Diimine Nickel Catalyst |
| title_sort | synthesis of branched cyclo olefin copolymers using neutral i α i sulfonate i β i diimine nickel catalyst |
| topic | cyclo-olefin copolymer norbornene ethylene nickel catalyst copolymerization |
| url | https://www.mdpi.com/1420-3049/30/1/157 |
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