Crystallization behavior of new poly(tetramethyleneterephthalamide) nanocomposites containing SiO2 fillers with distinct morphologies

A.C. Carvalho Esteves, de, A.M.M.V. Barros-Timmons, J.A. Martins, Weidong Zhang, J.J. Cruz-Pinto, T. Trindade

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Abstract

Polyamide-based nanocomposites containing surface-modified SiO2 nanofillers with different morphologies were prepared by in situ polymerisation. The nanocomposites microstructure was investigated by scanning electron microscopy, which showed a high degree of dispersion of the fillers. The isothermal crystallization kinetics, recorded with a differential scanning calorimeter, has shown a strong influence of the nanofillers morphology on the poly(tetramethyleneterephthalamide) crystallization behaviour. The strong nucleating effect of the inorganic substrate is interpreted as the combined result of a lower activation energy for the primary nucleation and a higher activation energy for the transport of chain stems to the growing lamellae.
Original languageEnglish
Pages (from-to)51-59
Number of pages9
JournalComposites. Part B: Engineering
Volume36
Issue number1
DOIs
Publication statusPublished - 2005

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