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Influence of the compatibilizer/nanoclay ratio on final properties of polypropylene matrix modified with montmorillonite-based organoclay

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Abstract

The use of nanoclays as additives for polymer matrices requires, in some cases (with non-polar matrices) the use of a compatibilizer agent which will act as a bridge or permanent buffer for nanoclay-matrix interaction. In this research, we have worked on the improvement of mechanical and thermal properties of polypropylene matrices by adding montmorillonite based nanoclays (MMT) which have been previously modified with an organic component (a quaternary ammonium salt modifier). In this particular case, we have worked on the optimization of the compatibilizer:nanoclay ratio. As a compatibilizer agent it has been used a propylene graft maleic anhydride copolymer (PP-g-MA) and the PP-g-MA:MMT ratio has varied from 0.25:1 to 4:1. Nanoclay dispersion and intercalation–exfoliation degree has been investigated by X-ray diffraction spectroscopy (XRD) and transmission electron microscopy (TEM). Also, mechanical and thermal properties for different PP-g-MA:MMT ratios have been determined. The results show optimum dispersion and intercalation–exfoliation levels for PP-g-MA:MMT ratios close to 3:1 and 4:1 and also we can observe a slight increase in mechanical and especially in thermal properties for similar ratios.

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Acknowledgments

Authors thank “Ministerio de Ciencia y Tecnología”, Ref: DPI2007-66849-C02-02, “Ministerio de Ciencia e Innovación”, Ref: CIT-020000-2008-14 and IMPIVA Ref: IMIDIN/2008/26 and for financial support.

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Authors and Affiliations

  1. Instituto Tecnológico Textil (AITEX), Plaza Emilio Sala 1, 03801, Alcoy (Alicante), Spain

    J. Pascual & E. Fages

  2. Instituto de Tecnología de Materiales (ITM), Universidad Politécnica de Valencia (UPV), Plaza Ferrandiz y Carbonell s/n, 03801, Alcoy (Alicante), Spain

    O. Fenollar, D. García & Rafael Balart

Authors
  1. J. Pascual
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  2. E. Fages
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  3. O. Fenollar
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  4. D. García
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  5. Rafael Balart
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Correspondence to Rafael Balart.

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Pascual, J., Fages, E., Fenollar, O. et al. Influence of the compatibilizer/nanoclay ratio on final properties of polypropylene matrix modified with montmorillonite-based organoclay. Polym. Bull. 62, 367–380 (2009). https://doi.org/10.1007/s00289-008-0018-7

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  • DOI: https://doi.org/10.1007/s00289-008-0018-7

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