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Norbornene polymerization and copolymerization with ethylene by titanium complexes bearing pyridinium imide ligand

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Abstract

A novel titanium complex was synthesized and characterized, and its catalytic behavior for the homopolymerization of norbornene (NB) and copolymerization with ethylene (E) was investigated. After activation with tri-isobutyl aluminum (TIBA), the titanium complex showed good activity for both homopolymerization of norbornene (NB) and copolymerization with ethylene (E), and the effect of reaction conditions on the catalytic activity was investigated. The norbornene copolymer (PNB) and norbornene-ethylene polymer (NB-E) were also characterized by nuclear magnetic resonance (1H NMR, 13C NMR), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). The results showed that PNB is an addition polymerization product of norbornene, and the insertion ratio of NB in NB-E is 83.40%. The morphology of PNB is flaky, while the morphology of NB-E is a cross-linked network. The solubility of PNB and NB-E is poor, and they have a good thermal decomposition temperature of about 400 ℃.

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Authors and Affiliations

  1. College of Chemistry and Chemical Engineering, Northeast Petroleum University, Heilongjiang, 163318, People’s Republic of China

    Jinyan Tan, Na Zhang, Ling Wang, Liduo Chen, Cuiqin Li & Jun Wang

  2. Daqing Chemical Research Center, Petrochina Petrochemical Research Institute, Heilongjiang, 163714, People’s Republic of China

    Yan Jiang

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"Jinyan Tan wrote the main manuscript text and prepared all figures . All authors reviewed the manuscript."

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Tan, J., Zhang, N., Wang, L. et al. Norbornene polymerization and copolymerization with ethylene by titanium complexes bearing pyridinium imide ligand. Transit Met Chem 48, 11–20 (2023). https://doi.org/10.1007/s11243-022-00517-4

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