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Isothermal crystallization of layered silicate/starch-polycaprolactone blend nanocomposites

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Abstract

The isothermal crystallization behavior of layered silicate/starch-polycaprolactone blend nanocomposites was studied by means of differential scanning calorimetry (DSC) measurements. The theoretical melting point was higher for the matrix than for nanocomposites. At low clay concentration, the induction time decreased and the overall crystallization rate increased acting as nucleating agent whereas at higher concentrations became retardants. Classical Avrami equation was used to analyze the crystallization kinetic of these materials. n values suggested that clay not only affected the crystallization rate but also influenced the mechanism of crystals growth. An Arrhenius type equation was used for the rate constant (k). Models correctly reproduced the experimental data.

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Authors and Affiliations

  1. Research Institute of Material Science and Technology (INTEMA), National University of Mar del Plata (UNMdP), Av. Juan B. Justo 4302, 7600, Mar del Plata, Argentina

    C. J. Perez, A. Vázquez & V. A. Alvarez

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  1. C. J. Perez
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  2. A. Vázquez
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  3. V. A. Alvarez
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Correspondence to V. A. Alvarez.

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Perez, C.J., Vázquez, A. & Alvarez, V.A. Isothermal crystallization of layered silicate/starch-polycaprolactone blend nanocomposites. J Therm Anal Calorim 91, 749–757 (2008). https://doi.org/10.1007/s10973-007-8213-6

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  • DOI: https://doi.org/10.1007/s10973-007-8213-6

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