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Influence of Interfacial Activity and Micelle Formation on Rheological Behavior and Microstructure of Reactively Compatibilized PP/PET Blends
Author(s) -
Entezam Mahdi,
Khonakdar Hossein Ali,
Yousefi Ali Akbar,
Jafari Seyed Hassan,
Wagenknecht Udo,
Heinrich Gert,
Kretzschmar Bernd
Publication year - 2012
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.201100121
Subject(s) - materials science , rheology , interconnectivity , composite material , viscoelasticity , microstructure , micelle , elastic modulus , modulus , compatibilization , copolymer , polymer blend , polymer , chemistry , artificial intelligence , aqueous solution , computer science
Dynamic and start‐up shear flow experiments along with SEM analysis are described for a PP/PET blend compatibilized by two reactive compatibilizers with different interfacial activity and rheological characteristics. The linear viscoelastic behavior of the blends is discussed using Palierne and fractional Zener models (FZMs). The nonzero value of G e , the elastic modulus of spring element of FZM, is explained by the network‐like structure of the blends attributed to the interconnectivity between dispersed‐phase domains. G e increases with increasing interfacial activity. Micelle formation due to extra amounts of compatibilizer in a system with higher interfacial activity leads to an increase of the elastic modulus, but to G e = 0 in system with lower interfacial activity.
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