(1) Department of Resin and Additives, Institute for Color Science and Technology, Tehran, Iran - Tehran - Iran, (2) Department of Science, Islamic Azad University, Central Tehran Branch,Tehran, Iran - Tehran - Iran, (3) Department of Chemical Engineering, Islamic Azad University, Central Tehran Branch,Tehran, Iran - Tehran - Iran, (4) Department of Polymer Engineering, Mahshahr Branch, Islamic Azad University, Mahshahr, Iran - Khoozestan - Iran, (5) Department of Polymer Engineering, Science and Research branch, Islamic Azad University, Sirjan - Kerman - Iran
The interfacial adhesion situation in HDPE/PA6/EVOH ternary blends with core-shell morphology is discussed based on tensile properties of prepared specimens. With this aim in view, different theoretical and experimental approaches originally proposed for evaluating interfacial adhesion in particulate composites and binary blends are successfully extended to the case of ternary blends and their parameters are obtained. In addition, the stress-strain curves of all prepared binary and ternary blends comprising different PA-6 to EVOH weight ratios in the minority phase are taken into account to study the yielding and toughening phenomena followed by quantitative evaluation of interfacial adhesion. The results provided support for the fact that the yielding behavior of prepared ternary blends is dependent on the weight fraction of minor components in the minority phase, which is attributable to formation of voids at the interface of polymers. Eventually, the interfacial adhesion in the assigned ternary systems is quantitatively tracked by using three perpendicular plates (3PP) model generalizing this model
Keywords: Interfacial adhesion, ternary blends, mechanical properties, core-shell morphology