2 research outputs found
Rheological behavior of compatibilized and non-compatibilized PA6/EPM blends
The rheological properties of PA-6/EPM polymer
blends, non-compatibilized and compatibilized with grafted
ethylene propylene rubber (EPM-g-MA), have been investigated.
Linear and non-linear (relaxation both in shear
and extension) experiments were realized. Stress relaxation
experiments coupled with scanning electron microscopy
(SEM) analysis showed the existence of one relaxation time
and non-deformed droplets for the immiscible blend, and
two relaxation times and deformed droplets for the compatibilized
ones, the second relaxation being more pronounced
for higher compatibilizer contents. These results clearly
indicate that, despite the high viscosity and elasticity ratios,
if high amounts of compatibilizer are added to the blend,
interfacial slip is suppressed and a high-enough adhesion
between the phases is achieved for the high-viscosity dispersed
phase to be deformed