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Polyolefin-based nanocomposites: the effect of organosilane on organoclay dispersion

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Abstract

This work dealt with the morphology and properties of polypropylene/organoclay (PP/OMMt) nanocomposites prepared using maleic anhydride-grafted polypropylene (PP-g-MA) or organosilane (OTMS) as a compatibilizing agent. The content of OMMt was 2 wt%, and different concentrations of OTMS were used to obtain OTMS/OMMt mass ratios of 0/1, 1/1, 0.5/1 or 0.25/1. The results of wide-angle X-ray scattering and transmission electron microscopy investigations showed that the OTMS promoted the total exfoliation of OMMt in the PP matrix, while the OMMt yielded a micrometer-scale dispersion when PP-g-MA was used. In general, the OTMS satisfactorily compatibilized the PP/OMMt nanocomposites, increasing the modulus of the PP matrix. When a hybrid compatibilizer of OTMS/PP-g-MA was used, better thermal and mechanical properties were achieved.

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

    K. S. Santos & R. S. Mauler

  2. Braskem S/A, III Pólo Petroquímico, Via Oeste Lote 5, Passo Raso, Triunfo, Brazil

    S. A. Liberman & M. A. S. Oviedo

Authors
  1. K. S. Santos
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  2. S. A. Liberman
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  3. M. A. S. Oviedo
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  4. R. S. Mauler
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Correspondence to R. S. Mauler.

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Santos, K.S., Liberman, S.A., Oviedo, M.A.S. et al. Polyolefin-based nanocomposites: the effect of organosilane on organoclay dispersion. J Mater Sci 49, 70–78 (2014). https://doi.org/10.1007/s10853-013-7662-5

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  • DOI: https://doi.org/10.1007/s10853-013-7662-5

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