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Synthesis and characterization of ethylene-1-hexene copolymers using homogeneous Ziegler-Natta catalysts

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Summary

This study investigated the copolymerization of ethylene with 1-hexene using the homogeneous Et[Ind]2ZrCl2 and [Ind]2ZrCl2 catalysts. The Et[Ind]2ZrCl2 catalyst gave a higher catalytic activity than the [Ind]2ZrCl2 and also showed a better incorporation of 1-hexene for the same comonomer concentration in the feed. Thermal analysis (DSC) and viscosity measurements showed that an increase of the 1-hexene incorporated in the copolymer results in a decrease of the melting point, crystallinity and molecular weight of the polymer formed. The reactivity ratios for ethylene and 1-hexene confirmed the more successful incorporation of the comonomer for the polymerization catalyzed by Et[Ind]2ZrCl2.

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Author notes

  1. Raul Quijada & Raquel S. Mauler

    Present address: Departamento de Ingenieria Química, Fac. Ciencias Físcas y Matemáticas, Universidad de Chile, Casilla, 2777, Santiago, Chile

Authors and Affiliations

  1. Instituto de Química, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, 91501-970, Porto Alegre, Brazil

    Raul Quijada, Rosângela B. Scipioni, Raquel S. Mauler, Griselda B. Galland & Márcia S. L. Miranda

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  1. Raul Quijada
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  2. Rosângela B. Scipioni
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  3. Raquel S. Mauler
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  4. Griselda B. Galland
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  5. Márcia S. L. Miranda
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Quijada, R., Scipioni, R.B., Mauler, R.S. et al. Synthesis and characterization of ethylene-1-hexene copolymers using homogeneous Ziegler-Natta catalysts. Polymer Bulletin 35, 299–306 (1995). https://doi.org/10.1007/BF00963127

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  • DOI: https://doi.org/10.1007/BF00963127

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