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Compounding sequence as a critical factor in the dispersion of OMMT/hydrocarbon resin/PP-g-MA/PP nanocomposites

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Abstract

The properties of polyolefin nanocomposites strongly depend on the dispersion level of the nanoparticles, and the addition of dispersion agents has contributed to improvements in their performance. However, the mixing order of the components must be considered due to potential effects of each component alone. In this study, the morphology of the polypropylene nanocomposites was correlated to the preparation method, the use of hydrogenated hydrocarbon resin and the use of compatibilizing agents (PP-g-MA). The nanocomposites were prepared by intercalation of organoclay montmorillonite (OMMT) and PP-g-MA as compatibilizer with different maleic anhydride (MA) content in the molten state with either one-step or two-step mixing. A better distribution and dispersion of the OMMT platelets was achieved by using the two-step procedure. This improvement was observed to a significantly greater extent in samples with compatibilizing agents in the first mixing step. Additionally, the use of hydrogenated hydrocarbon resin showed improvement in morphology with lower MA content. These results point to the two-step method as a means to improve clay dispersion in the field of polyolefin nanocomposite processing.

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Acknowledgements

The authors are grateful to CAPES, CNPq, Finep and FAPERGS/PRONEX for their financial support.

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Authors and Affiliations

  1. Institute of Chemistry, Universidade Federal do Rio Grande do Sul–UFRGS, Av. Bento Gonçalves 9500, Porto Alegre, RS, 91501-970, Brazil

    Eveline Bischoff, Douglas Alexandre Simon, Susana Alcira Liberman & Raquel Santos Mauler

  2. Federal Institute of Rio Grande do Sul – IFRS – Campus Farroupilha, Av. São Vicente 785, Farroupilha, RS, 95180-000, Brazil

    Eveline Bischoff & Douglas Alexandre Simon

Authors
  1. Eveline Bischoff
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  2. Douglas Alexandre Simon
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  3. Susana Alcira Liberman
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  4. Raquel Santos Mauler
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Correspondence to Eveline Bischoff or Raquel Santos Mauler.

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Bischoff, E., Simon, D.A., Liberman, S.A. et al. Compounding sequence as a critical factor in the dispersion of OMMT/hydrocarbon resin/PP-g-MA/PP nanocomposites. Polym. Bull. 76, 849–863 (2019). https://doi.org/10.1007/s00289-018-2408-9

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  • DOI: https://doi.org/10.1007/s00289-018-2408-9

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