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Synthesis of polypropylene-graft-norbornene by reactive extrusion and its rheological behavior

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Abstract

To overcome the steric effect of norbornene (NB), first-generation Grubbs’ catalyst (GC1) was used as the catalyst to graft NB onto the polypropylene (PP) chain by reactive extrusion. Instead of harsh reaction conditions, such as anhydrous, which was the general method to synthesize NB polymers, this convenient method would be easier to industrialize. The mechanism of grafting was studied by using Fourier Transform InfraRed spectra and differential scanning calorimetry. It was found that GC1 could initiate the ring-opening metathesis polymerization of NB to obtain short NB chain-grafted PP-g-NB. The rheological behavior showed that the grafted NB short chains on PP-g-NB increase the shear thinning of the polymers and decrease the system viscosity.

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Authors and Affiliations

  1. School of Materials and Chemical Engineering, Ningbo University of Technology, Ningbo, Zhejiang, China

    Zhenghui Li, Lu Chen & Peijie Yu

  2. Ningbo College of Health Sciences, Ningbo, Zhejiang, China

    Lingli Zhang

  3. Xingzhi College Zhejiang Normal University, Jinhua, Zhejiang, China

    Hongyu Hu

Authors
  1. Zhenghui Li
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  2. Lu Chen
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  3. Peijie Yu
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  4. Lingli Zhang
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  5. Hongyu Hu
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Correspondence to Hongyu Hu.

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Li, Z., Chen, L., Yu, P. et al. Synthesis of polypropylene-graft-norbornene by reactive extrusion and its rheological behavior. MRS Communications 10, 487–491 (2020). https://doi.org/10.1557/mrc.2020.51

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  • DOI: https://doi.org/10.1557/mrc.2020.51

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