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Copolymerization of Norbornene and Butyl Methacrylate at Elevated Temperarure by Single Centre Nickel Catalyst Bearing Bulky Bis(α-diimine) Ligand with Strong Electron-Withdrawing Group

Abstract

Three dimensional geometry bulky a-diimine ligand with strong electron-withdrawing groups (-NO2), 9,10-dihydro-9,10-ethanoanthracene-11,12-di(p-PhNO2)imine(L), and corresponding single nickel catalyst (NiL2Br2) were synthesized and the molecular structure of NiL2Br2 catalyst was confirmed by X-ray crystallography. After being activated with B(C6F5)3, the NiL2Br2 catalyst exhibited high activity toward homopolymerization and copolymerization of norbornene(NB) and butyl methacrylate(BMA). The obtained poly(NB-co-BMA)s were confirmed to be vinyl-addition copolymers and noncrystalline. The BMA monomer content in the copolymers could be controlled up to 6.0–78.7 % by varying the BMA monomer feed ratios from 10 to 90 %. The obtained poly(NB-co-BMA)s exhibited high thermal stability (Td > 390 oC), high-molecular-weight and narrow molecular weight distribution (PDI ≤ 1.4), and could be processed into films with good transparency and mechanical properties.

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Publication details

The article was received on 16 Jan 2017, accepted on 17 Mar 2017, published on 20 Mar 2017 and first published online on 20 Mar 2017


Article type: Paper
DOI: 10.1039/C7PY00081B
Citation: Polym. Chem., 2017, Accepted Manuscript
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    Copolymerization of Norbornene and Butyl Methacrylate at Elevated Temperarure by Single Centre Nickel Catalyst Bearing Bulky Bis(α-diimine) Ligand with Strong Electron-Withdrawing Group

    X. He, Y. Deng, Z. Wang, X. Jiang, Z. Han, Y. Yang and D. Chen, Polym. Chem., 2017, Accepted Manuscript , DOI: 10.1039/C7PY00081B

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