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Title of Journal: Polym Bull

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Abbravation: Polymer Bulletin

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Springer Berlin Heidelberg

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DOI

10.1007/s10800-004-1758-1

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1436-2449

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Analysis of dynamic oscillatory rheological proper

Authors: Masoud Razavi Aghjeh Elham Mardani Faezeh Rafiee Maryam Otadi Hossein Ali Khonakdar Seyed Hassan Jafari Uta Reuter
Publish Date: 2016/06/20
Volume: 74, Issue: 2, Pages: 465-482
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Abstract

A comprehensive investigation was performed on singlestep melt processed polypropylene PP/ethylene vinyl acetate copolymer EVA/organomodified layered double hydroxide LDH counterpart ternary hybrids to explore the effect of LDH loading on smallamplitude oscillatory shear SAOS rheological properties and to correlate the properties with microstructure The rheological results were analyzed in detail from qualitative and quantitative perspectives Using qualitative interoperation of storage modulus and complex viscosity alteration against LDH loading and also quantitative analysis by viscosity models based on both the generalized Newtonian fluid GNF and generalized linear viscoelastic GLVE approaches detailed predictions were carried out on the microstructure of samples and also partitioning of the organomodified LDH particles and their intercalation and exfoliation extent within hybrids By comparing the elasticity and relaxation spectrum of PPrich/LDH with those of EVArich/LDH hybrids it was predicted that organomodified LDH platelets in the case of PPrich samples have been located at the interface or within the EVA dispersed particles while in the case of EVArich samples they mainly localized within the matrix In addition the crossover frequency and slope of G′ and G″ curve at terminal region were correlated with the extent of intercalated and exfoliated structures of filler The validity of these predictions on microstructure of the developed hybrids was confirmed visually using transmission electron microscope TEM micrographs

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