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

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Resumo: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.
Autores principais:Esteves, Ana Catarina C.
Outros Autores:Timmons, Ana Margarida Madeira Viegas de Barros; Martins, J. A.; Zhang, W.; Pinto, J. J. C. Cruz; Trindade, Tito
Assunto:A. Polymer–matrix composites (PMCs) A. Nano-structures B. Thermal properties D. Thermal analysis polymer-matrix composites (PMCs) nano-structures thermal properties thermal analysis
Ano:2005
País:Portugal
Tipo de documento:artigo
Tipo de acesso:acesso restrito
Instituição associada:Universidade do Minho
Idioma:inglês
Origem:RepositóriUM - Universidade do Minho

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