Physical Characterization of a Commercial Suspoemulsion as a Reference for the Development of Suspoemulsions. Issue 11 (11th October 2013)

• Record Type: Journal Article
• Authors: Santos, J.; Trujillo, L. A.; Calero, N.; Alfaro, M. C.; Muñoz, J.
• Is Part Of: Chemical engineering & technology. Volume 36:Issue 11(2013:Nov.)
• Page Start: 1883
• Page End: 1890
• Publication Date: 2013-10-11
• Subjects: Chemical engineering -- Periodicals; Chemical processes -- Periodicals; 660.05
• DOI: 10.1002/ceat.201300284
• Languages: English
• ISSNs: 0930-7516

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Viscoelasticity, low shear flow, microstructure, and physical stability of a commercial suspoemulsion pesticide are studied to serve as a point of reference for the development of new suspoemulsions. Creep compliance tests allow the zero‐shear rate viscosity, η₀, to be calculated. As expected, the values of η₀ decrease with temperature. The storage modulus is higher than the loss modulus until a crossover frequency, ω*, which is located at the lower frequencies studied. The dynamic parameters decrease with higher temperature and ω* increases in agreement with a faster relaxation mechanism. Multiple light scattering predicts the occurrence of a creaming destabilization process, whose kinetics depends on temperature. Rheological measurements are demonstrated to be a powerful tool to assist in the prediction of destabilization processes together with the multiple light scattering technique.</p> </abstract>