Polímeros: Ciência e Tecnologia
Polímeros: Ciência e Tecnologia
Scientific & Technical Article

Effect of compatibilization in situ on PA/SEBS blends

Carvalho, Anna Paula Azevedo de; Sirqueira, Alex da Silva

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This paper presents the mechanical, thermal and rheological properties of polymer blends of polyamide 6 (PA) and styrene-butylene-styrene (SEBS) using SEBS-g-MA as a coupling agent. The increase in the interfacial interaction of PA/SEBS blends with the addition of SEBS-g-MA was observed to enhance the mechanical properties studied (excellent elongation at break revealed by a 500% increase). Higher hardness values and a higher degree of crystallinity were obtained for compatibilized blends. In the presence of the SEBS-MA compatibilizer, the heat sweep thermograms obtained by DSC showed only one melting peak, which confirms the effect of the compatibilizer. The best rheological properties were observed for the ternary blends. The lowest concentration of SEBS-g-MA promoted the toughening of PA, and 7.5 phr of compatibilizer increased the modulus E' of the ternary blends compared to that of the binary blends. DMTA analysis allowed for the system to be characterized as partially miscible.


polyamide, SEBS, compatibilization, rheology, DMTA.


1. Utracki, L. A. (1989). Polymer alloys and blends: thermodynamics and rheology. New York: Hanser Publisher.

2. Pavlidou, S., & Papaspyrides, D. (2008). A review on polymer-layered silicate nanocomposites. Progress in Polymer Science, 33(12), 1119-1139. http://dx.doi.org/10.1016/j.progpolymsci.2008.07.008.

3. Paul, D. R., & Robeson, L. M. (2008). Polymer technology: nanocomposites. Polymer, 49(15), 3187-3204. http://dx.doi.org/10.1016/j.polymer.2008.04.017.

4. Maglio, G., & Palumbo, R. (1994). The role of interfacial agents in polymer Blends, Processing, Morphology and Properties. New York: Plenum Press.

5. Gomes, S. A., Barbosa, R. V., & Soares, B. G. (1992). Agentes compatibilizantes não reativos para blendas polimericas. I. síntese de poli(etileno-co-acetato de vinila-G-estireno). Polímeros: Ciência e Tecnologia, 2, 19-24. Retrieved in 21 June 2015, from http://revistapolimeros.org.br/articles/view/id/515c6c9e1ef1fae740000540

6. Fiegenbaum, F. (2007). Estudo da compatibilização das blendas PP/PA e PP/EPR (Master's dissertation). Universidade Federal do Rio Grande do Sul, Porto Alegre.

7. Kusomoto, Ishak, M. Z. A., Chow, W. S., Takeichi, T., & Rochmadi. (2008). Influence of SEBS-g-MA on morphology, mechanical and thermal properties of PA/PP/organoclay nanocomposites. European Polymer Journal, 44, 1023-1029. http://dx.doi.org/10.1016/j.eurpolymj.2008.01.019

8. Roeder, J., Oliveira, R. V. B., Gonçalves, M. C., Soldi, V., & Pires, A. T. N. (2002). Polypropylene/polyamide-6 blends: influence of compatibilization agent on interface domains. Polymer Testing, 21(7), 815-821. http://dx.doi.org/10.1016/S0142-9418(02)00016-8.

9. Jiang, C., Filippi, S., & Magagnini, P. (2003). Reactive compatibilizer precursors for LDPE/PA6 blends. I: maleic anhydride grafted polyethylenes. Polymer, 44(8), 2144-2149. http://dx.doi.org/10.1016/S0032-3861(03)00133-2.

10. Bassani, A.; Hage, E., Jr.; Persan, L. A.; Machado, A. V., & Covas, J. A. (2005). Evolução da morfologia de fases de blendas PA6/AES em extrusora de dupla rosca e moldagem por injeção. Revista Polímeros: Ciência e Tecnologia, 15, 176-185. http://dx.doi.org/10.1590/S0104-14282005000300007

11. Almeida, M. S. M. (2006). Compatibilização reativa e vulcanização dinâmica em misturas de polipropileno e borracha nitrílica (Doctoral thesis). Universidade Federal do Rio de Janeiro, Rio de Janeiro.

12. Shi, D., Ke, Z., Yang, J., Gao, Y., Wu, J., & Yin, J. (2002). Rheology and morphology of reactively compatibilized/PA6 blends. Macromolecules, 35(21), 8005-8012. http://dx.doi.org/10.1021/ma020595d.

13. Marco, C., Ellis, G., Gómez, M. A., Fatou, J. G., Arribas, J. M., Campoy, I., & Fontecha, A. (1997). Rheological properties, crystallization, and morphology of compatibilized blends of isotactic polypropylene and polyamide. Journal of Applied Polymer Science, 65, 13-20. http://dx.doi.org/10.1002/(SICI)1097-4628(19970926)65:13<2665::AID-APP8>3.0.CO;2-9.

14. Campbell, D., Pethrick, R. A., & White, J. R. (2000). Polymer characterization: physical techniques. New York: Hanser Publisher.

15. Sanchez, A., Rosales, C., Laredo, E., Muller, A. J., & Pracella, M. (2001). In situ fibrillar reinforced PET/PA6/PA66. Polymer Science Engineer, 41, 205-208. http://dx.doi.org/10.1002/pen.10721.

16. Walters, K. (1989). An introductiuon to rheology. Amsterdam: Elsevier Press.

17. Ollshom, B., Hassander, H., & Tornell, B. (1998). Improved compatibility between polyamide and polypropylene by the use of maleic anhydride grafted SEBS. Polymer, 39, 26-33. http://dx.doi.org/10.1016/S0032-3861(97)10290-7.
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