Applied Rheology: Publications
You have network access to this resource: k-mai670 [1758]
A.C.K. Sato, F.A. Perrechil, R.L. Cunha
Rheological behavior of suspensions dispersed in non-Newtonian matrix

Appl. Rheol. 23:4 (2013) 45397 (10 pages)

Abstract: Suspensions composed with silica particles or cellulose fibers dispersed in glycerin and/or xanthan aqueous solutions were formulated with solids volume fraction varying up to 15 and 10 % for silica and cellulose dispersions, respectively. In addition, xanthan was added to the aqueous solutions (water or 82 % glycerin + water) at concentrations of 0.005, 0.1, and 0.2 % to impart non-Newtonian character to matrices, and results were compared to the Newtonian systems, without xanthan addition. Even though developed for suspensions in Newtonian fluids, Krieger-Dougherty and Eilers models described properly the influence of solids content on the flow behavior of suspensions in non-Newtonian fluids. Generally, increasing cellulose particles concentration led to an increase on the suspension pseudoplasticity, while for silica particles such increase was more discrete. Low deformation rheological measurements showed that glycerin-containing matrices were more independent on frequency as compared to suspensions of aqueous xanthan solutions. Results showed that, besides particles characteristics, the rheological properties of the suspending matrix are crucial for determining the arragements and flow properties of suspensions. © 2013 Applied Rheology.

DOI 10.3933/ApplRheol-23-45397

-- full text PDF available for subscribers --

-- open access PDF extract available for non-subscribers --


You have no password-free access to Applied Rheology Online. If you are a subscriber, enter login details below. For password-free access, we need your IP address. Sample manuscripts for free download can be found here

download to disk (some browsers prefer this option)
login name
password

Purchase this article for 20 € ?

Forgotten your login details? Send an email with subject "AR login" to login@appliedrheology.org


Appl Rheol 23 (2013) issues:

           


© Applied Rheology 2018