Carbon nanoparticles as effective nucleating agents for polypropylene

  • S. Reyes-de Vaaben
  • A. Aguilar
  • F. Avalos
  • L. F. Ramos-de Valle
Article

Abstract

The effect of four nucleating agents on the crystallization of isotactic polypropylene (iPP) was studied by differential scanning calorimetry (DSC) under isothermal and non-isothermal conditions. The nucleating agents are: carbon nanofibers (CNF), carbon nanotubes (CNT), lithium benzoate and dimethyl-benzylidene sorbitol.

Avramișs model is used to analyze the isothermal crystallization kinetics of iPP.

Based on the increase in crystallization temperature (Tc) and the decrease in half-life time (τ½) for crystallization, the most efficient nucleating agents are the CNF and CNT, at concentrations as low as 0.001 mass%. Sorbitol and lithium benzoate show to be less efficient, while the sorbitol needs to be present at concentrations above 0.05 mass% to even act as nucleating agent.

Keywords

carbon nanofibers carbon nanotubes dimethyl-benzylidene sorbitol isothermal kinetics lithium benzoate nucleating agents polypropylene 

Copyright information

© Springer Science+Business Media, LLC. 2008

Authors and Affiliations

  • S. Reyes-de Vaaben
    • 1
  • A. Aguilar
    • 1
  • F. Avalos
    • 1
  • L. F. Ramos-de Valle
    • 2
  1. 1.Universidad Autónoma de CoahuilaFacultad de Ciencias QuímicasSaltillo CoahuilaMexico
  2. 2.Centro de Investigación en Química Aplicada (CIQA)Saltillo CoahuilaMexico

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