title: Constitutive equations for Ca2+-alginate gels.
abstract: Constitutive equations accounting for the coupling between chemical and mechanical phenomena are developed for the Ca(2+) alginate gel from the framework of thermodynamics of irreversible processes with internal variables. The development of the model is based on the Gibbs-Duhem relation and kinetic relations acting on generalized non-equilibrium forces. The constitutive equations are then compared to mechanical data obtained from uniaxial compressive tests at different velocities. A good agreement is observed between model and data. Furthermore, the model is able to predict the evolution of the mechanical response when the initial quantity of crosslinked Ca(2+) ions varies.
authors.affiliation: Laboratoire Environnement Géomécanique et Ouvrages, Nancy-Université, Rue du Doyen Roubault BP 40, 54501 Vandoeuvre-lès-Nancy Cedex, France. Vincent.Magnenet@ensg.inpl-nancy.fr
authors.forename: V
authors.initials: V
authors.lastname: Magnenet
authors.forename: J
authors.initials: J
authors.lastname: Schiavi-Tritz
authors.forename: C
authors.initials: C
authors.lastname: Huselstein
authors.forename: R
authors.initials: R
authors.lastname: Rahouadj
mesh_terms: D000464:Alginates / Q000737:chemistry*; D005782:Gels; D020723:Glucuronic Acid / Q000737:chemistry; D006603:Hexuronic Acids / Q000737:chemistry; D007700:Kinetics; D055595:Mechanical Phenomena; D015203:Reproducibility of Results; D013816:Thermodynamics
chemical_list: D000464:Alginates; D005782:Gels; D006603:Hexuronic Acids; D020723:Glucuronic Acid