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Synthesis of vinylferrocene and the ligand-exchange reaction between its copolymer and carbon nanotubes

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Abstract

To improve the dispersibility of carbon nanotubes (CNTs), poly(vinylferrocene-co-styrene) (poly (Vf-co-St)), was grafted onto the surface of CNTs by a ligand-exchange reaction. Poly(Vf-co-St) was obtained by a radical copolymerization reaction using styrene and vinylferrocene as the monomers. The vinylferrocene was synthesized from ferrocene via a Friedel-Crafts acylation. The molecular weight, molecular weight distribution, and amount of Vf in the poly(Vf-co-St) were 1.32 × 104, 1.69 and 17.6% respectively. The degree of grafting of the copolymer onto the CNTs surface was calculated from thermogravimetric analysis and varied from 27.1% to 79.7%. The addition of the poly(Vf-co-St) greatly promoted the dispersibility of the modified CNTs in anhydrous alcohol. The electrical conductivity of composites prepared from the polymer-grafted CNTs and copolymer (acrylonitrile, 1,3-butadiene and styrene, ABS) strongly depended on the degree of grafting. These results show that the amount of polymer grafted onto the surface of CNTs can be controlled and that the electrical properties of composites prepared with these grafted polymers can be tuned.

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Authors and Affiliations

  1. Department of Polymer Materials and Engineering, Dalian University of Technology, Dalian, 116024, China

    Ran Shi, Ping Tang & Yuezhen Bin

  2. Department of Future Industry-Oriented Basic Science and Materials, Toyota Technological Institute, Tempaku, Nagoya, 468-8511, Japan

    Hai Wang

Authors
  1. Ran Shi
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  2. Hai Wang
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  3. Ping Tang
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  4. Yuezhen Bin
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Correspondence to Yuezhen Bin.

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Shi, R., Wang, H., Tang, P. et al. Synthesis of vinylferrocene and the ligand-exchange reaction between its copolymer and carbon nanotubes. Front. Chem. Sci. Eng. 8, 171–178 (2014). https://doi.org/10.1007/s11705-014-1428-8

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  • DOI: https://doi.org/10.1007/s11705-014-1428-8

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