Elongational rheology of polymer/clay dispersions: Determination of orientational extent in elongational flow processes
Document Type
Article
Publication Date
4-14-2008
Abstract
The purpose of the present contribution is to provide an efficient method that would help to quantify the orientational levels occurring in polymer/clay dispersions subjected to elongational flow. The extent of internal orientation developed in salt containing montmorillonite/polyethylene oxide) gels is investigated, combining shear and elongational rheology methods. Entropic changes indicate that the strength of the transient network present in each gel affects the orientational ability of clay particles and polymer chains. We found that an increased Hencky strain of the hyperbolic die leads to a higher variation of the calculated entropy of the material. © 2008 WILEY-VCH Verlag GmbH & Co. KGaA.
Publication Source (Journal or Book title)
Macromolecular Materials and Engineering
First Page
303
Last Page
309
Recommended Citation
Stefanescu, E., Petrovan, S., Daly, W., & Negulescu, I. (2008). Elongational rheology of polymer/clay dispersions: Determination of orientational extent in elongational flow processes. Macromolecular Materials and Engineering, 293 (4), 303-309. https://doi.org/10.1002/mame.200700371