Effects of mixing protocol on morphology and properties of PA6/ABS blends compatibilized with MMA-MA

Autor(es)

Castro, L. D. C. ; Oliveira, A. D. ; Kersch, M. ; Altstadt, V. ; Pessan, L. A.

• Tipo de documento: Artigo Científico
• Fonte: Journal of Applied Polymer Science; v. 133, n. 27, p. 8-pg., 2016-07-15.

Resumo

The effect of different mixing protocols in the preparation of PA6/ABS/MMA-MA (57.5/37.5/5 wt %) blends on their morphological, rheological, thermal, thermomechanical, and mechanical behavior were studied. Despite the second-phase size reduction due to copolymer incorporation, mixing sequence seems to play an important role in the properties of the blends. When PA6 is blended with the pre-blended ABS/MMA-MA system, compatibilizer is preferentially located in ABS phase and a co-continuous structure is formed. The co-continuity is believed to be responsible for the enhancements in toughness, but excessive presence of MMA-MA in ABS phase seems to hamper thermomechanical properties. On the other hand, when ABS is blended with the PA6/MMA-MA system previously prepared, compatibilizer is preferentially located in PA6 phase and a particle-in-matrix morphology is observed. The absence of excessive amount of MMA-MA in ABS phase avoids the negative effect on thermomechanical resistance, however enhancements in toughness are not so pronounced. (c) 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43612. (AU)

• Processo FAPESP: 12/15445-5 - Desenvolvimento de nanocompósitos de blendas PA6/ABS compatibilizadas com copolímeros funcionalizados
• Beneficiário: Lucas Daniel Chiba de Castro
• Modalidade de apoio: Bolsas no Brasil - Mestrado