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ABSTRACTS POR TÓPICO

S5. Reología y procesamiento de polímeros

INFLUENCE OF WATER ADDITION ON THE RHEOLOGICAL BEHAVIOR AND SYNERESIS OF EUTECTOGELS
Salvador Enrique Farías Anzo1, Emma Rebeca Macias Balleza1, Erika Roxana Larios Durán2, Silvia Teresa Huerta Marcial3, Josue Mota-Morales4
1Universidad de Guadalajara, Reología, Mexico. 2Universidad de Guadalajara, Electroquímica, Mexico. 3Universidad de Guadalajara, Mecánica Eléctrica, Mexico. 4Centro de física aplicada y tecnología avanzada (CFATA), Nanotecnología, Mexico.


An aspect that has gained considerable relevance in the current context is the need to implement smart and sustainable materials. Within this framework, eutectogels represent a novel class of materials with great potential for applications across diverse fields, including biomedicine (e.g., biosensors), owing to their tunable properties primarily imparted by deep eutectic solvents (DESs). Moreover, their negligible volatility makes them suitable candidates to replace conventional hydrogels. Recent studies have highlighted particular interest in the incorporation of water into eutectogels as a strategy to mitigate syneresis. Accordingly, in this work, the rheological behavior of eutectogels composed of the DES ethylene glycol:choline chloride in a 2:1 molar ratio and type A gelatin as the gelling agent was investigated. Strain, frequency, and temperature sweeps, as well as compression tests, were carried out to evaluate the influence of water on the mechanical and rheological properties of the gels. The results showed that water incorporation decreases syneresis in eutectogels and, although it reduces the viscosity of the precursor solution, the final gels exhibit no significant changes in their rheological and mechanical properties. Thus, water addition enhances gel stability without compromising their mechanical performance


Keywords: Deep eutectic solvents, Eutectic point, Syneresis

Presenting authors email: salvador.farias7849@alumnos.udg.mx
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