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Nucleating Effect and Dynamic Crystallization of a Poly(propylene)/Attapulgite System

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Abstract

In this work, the influence of attapulgite concentration on the nucleating efficiency of isotactic polypropylene (iPP) and on the kinetics of non-isothermal crystallization were ascertained.The study was conducted by DSC. The nucleating efficiency was determined according to the procedure described by Fillon and the kinetics of non-isothermal crystallization was determined using Ozawa's method using cooling rates of 2, 5 and 10°C min−1.Our results indicate that both the relative crystallinity and the crystallization temperature increase with filler content and that a maximum occurs at 2% mass/mass filler content. Both parameters decrease with increasing cooling rates. The Ozawa's exponent tended to increase with temperature and filler content.

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Authors and Affiliations

  1. Departamento de Engenharia de Materiais, CCT, Universidade Federal da Paraíba, 58109-970, Campina Grande, Paraíba, Brazil

    E. S. Medeiros, R. S. Tocchetto & L. H. Carvalho

  2. Departamento de Química, CCEN, Universidade Federal da Paraíba, 58059-900, cJoão Pessoa, Paraíba, Brazil

    M. M. Conceição & A. G. Souza

Authors
  1. E. S. Medeiros
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  2. R. S. Tocchetto
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  3. L. H. Carvalho
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  4. M. M. Conceição
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  5. A. G. Souza
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Corresponding author

Correspondence to L. H. Carvalho.

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Medeiros, E.S., Tocchetto, R.S., Carvalho, L.H. et al. Nucleating Effect and Dynamic Crystallization of a Poly(propylene)/Attapulgite System. Journal of Thermal Analysis and Calorimetry 67, 279–285 (2002). https://doi.org/10.1023/A:1013946310044

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  • DOI: https://doi.org/10.1023/A:1013946310044

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