CARMONA GALLEGO , José Antonio

El objetivo principal de este tesis fue la caracterización reológica de las suspensiones acuosas de una goma xantana comercial (Keltro Advanced performance) con propiedades mejoradas. El fabricante CP Kelco ha perfeccionado el proceso de obtención de la goma xantana lo cual se traduce en valores de viscosidad y viscoelasticidad mayores que las...

En este trabajo se estudiaron las transiciones térmicas de la yema de huevo usando técnicas de calorimetría diferencial de barrido (DSC) y ensayos viscoelásticos lineales, más concretamente, ensayos de cizalla oscilatoria de baja amplitud (SAOS). Se analizó la influencia de la composición (pH, concentración de electrolito y tipo). Los...

A very positive and effective approach to tuning the mechanical properties of polymers has been the development of composites. This paper deals with novel biocomposite hydrogels composed by two biocompatible materials: welan gum as biopolymer matrix and sepiolite as filler. Welan gum content was studied as a tuning parameter to control the...

The influence of EO/BO block copolymer surfactant concentration in the range (1–5% (m/m)) and emulsification time on the emulsion stability and droplet size distribution of bitter fennel essential oil-in-water emulsions has been studied. Essential oils are promising material to be used for emulsion formulation with applications in cosmetics,...

In this work, nanoemulsion-based delivery system was developed by encapsulation of fennel essential oil. A response surface methodology was used to study the influence of the processing conditions in order to obtain monomodal nanoemulsions of fennel essential oil using the microchannel homogenization technique. Results showed that it was...

Diutan gum is a biological polymer produced by Sphingomonas sp. In aqueous solution it shows gel-like structure under quiescent conditions. However, the flow-induced evolution of its viscoelastic properties and its microstructure are not known. In this work, the viscoelastic moduli were obtained under a flow field, applied in parallel, as a...

In this work, the influence of the concentration on the flow behaviour, dynamic viscoelastic and creep properties of diutan gum in aqueous solution was investigated. Diutan gum is a biopolymer which belongs to the sphingans group. To know its rheological properties and its microstructure as a function of the concentration is directly related to...