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.
LanguageEnglish
Pages51-59
Number of pages9
JournalComposites. Part B: Engineering
Volume36
Issue number1
DOIs
StatePublished - 2005

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Crystallization
Fillers
Nanocomposites
Activation energy
Crystallization kinetics
Nylons
Calorimeters
Polyamides
Nucleation
Polymerization
Scanning
Microstructure
Scanning electron microscopy
Substrates

Cite this

Carvalho Esteves, de, A.C. ; Barros-Timmons, A.M.M.V. ; Martins, J.A. ; Zhang, Weidong ; Cruz-Pinto, J.J. ; Trindade, T./ Crystallization behavior of new poly(tetramethyleneterephthalamide) nanocomposites containing SiO2 fillers with distinct morphologies. In: Composites. Part B: Engineering. 2005 ; Vol. 36, No. 1. pp. 51-59
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Crystallization behavior of new poly(tetramethyleneterephthalamide) nanocomposites containing SiO2 fillers with distinct morphologies. / Carvalho Esteves, de, A.C.; Barros-Timmons, A.M.M.V.; Martins, J.A.; Zhang, Weidong; Cruz-Pinto, J.J.; Trindade, T.

In: Composites. Part B: Engineering, Vol. 36, No. 1, 2005, p. 51-59.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Crystallization behavior of new poly(tetramethyleneterephthalamide) nanocomposites containing SiO2 fillers with distinct morphologies

AU - Carvalho Esteves, de,A.C.

AU - Barros-Timmons,A.M.M.V.

AU - Martins,J.A.

AU - Zhang,Weidong

AU - Cruz-Pinto,J.J.

AU - Trindade,T.

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AB - 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.

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