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Effect of Nanoplatelets on the Rheological Behavior of Epoxy Monomers
Author(s) -
Sun Luyi,
Boo WoongJae,
Liu Jia,
Clearfield Abraham,
Sue HungJue,
Verghese Nikhil E.,
Pham Ha Q.,
Bicerano Jozef
Publication year - 2009
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.200800258
Subject(s) - materials science , rheology , epoxy , composite material , shear thinning , monomer , viscosity , nanocomposite , exfoliation joint , polymer , nanotechnology , graphene
The effect of nanoplatelets on the rheological behavior of epoxy monomers with variations in nanoplatelet exfoliation level and aspect ratio was investigated. The results show that the presence of exfoliated nanoplatelets in epoxy can significantly influence viscosity and lead to shear‐thinning phenomena, especially when the aspect ratio of the nanoplatelets is high. By employing the Krieger‐Dougherty model, the effectiveness of nanoplatelets in altering epoxy rheological behavior was quantitatively described and compared with experimental findings. Possible physical reasons for the observed rheological behaviors are discussed. The implication of the present study for polymer nanocomposites processing is also addressed.