These results corresponded to the mechanical properties in Table 5. Also, the results are in good agreement with the trend of complex viscosity in Fig. 12 and Fig. 13. Similar causes for the low and high amounts of the compatibilizers exerting on the blend interface described above could be applied to the present results. In addition, some excess amount of compatibilizers might form small micelles, which produce a lubricant effect to the system and, hence, lower flow resistance or lower viscosity.