Study of lineal and non lineal viscoelastic behavior of PP/PA-6 polymer blends compatibilized or no. / Estudo da viscoelasticidade linear e não linear de misturas de PP/PA-6 compatibilizadas ou não.

AUTOR(ES)
DATA DE PUBLICAÇÃO

2006

RESUMO

Rheological and morphological behaviour of polypropylene and polyamide polymer blend was studied. The values of interfacial tension were obtained between 10mN/m and 13mN/m. The interfacial tension decreased in 87% for compatibilized blend. Morphology analysis for linear viscoelastic regime shows dispersed drop diameter between 1,5µm and 20µm. The diameter of the drops decreased with the addition of maleic polypropylene reducing until 98%, keeping constant the concentration of the disperse phase. In non linear viscoelastic regime different models were tested to evaluate the behavior of the blends in shear and elongacional flows. However, only the elongacional flow results were acquired with theoretical - experimental corroboration.

ASSUNTO(S)

non lineal viscoelastic polymer blends lineal viscoelastic pp/pa-6 viscoelasticidade linear extensional flow pp/pa-6 tensão interfacial fiber retraction and breaking thread misturas poliméricas retração de fibra e fibra quebrante interfacial tension viscoelasticidade não linear fluxo elongacional

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