info:eu-repo/semantics/article
Ca(II) and Ce(III) homogeneous alginate hydrogels from parent alginic acid precursor: a structural study
Fecha
2016-04Registro en:
Sonego, Juan Manuel; Santagapita, Patricio Roman; Perullini, Ana Mercedes; Jobbágy, Matías; Ca(II) and Ce(III) homogeneous alginate hydrogels from parent alginic acid precursor: a structural study; Royal Society of Chemistry; Dalton Transactions; 45; 4-2016; 10050-10057
1477-9226
CONICET Digital
CONICET
Autor
Sonego, Juan Manuel
Santagapita, Patricio Roman
Perullini, Ana Mercedes
Jobbágy, Matías
Resumen
Alginate hydrogels are suitable for the encapsulation of biomolecules and microorganisms for the building of bioactive materials. Several alternatives to the conventional alginate formulation are being studied for a broad range of biotechnological applications; among them the crosslinking of alginate by lanthanide cations, Ln(III), envisages expanded biomedical applications. The performance of these functional materials is highly related to the microstructure of the alginate matrix, which in turn is affected by the conditions of synthesis. In particular, when a diffusing gradient of the crosslinking cation is involved, microstructure inhomogeneities are expected at the macroscopic level. Here we discuss the subtle differences in the microstructure, as assessed by SAXS (Small Angle X-ray Scattering), established in the direction of the gradient of diffusion of Ca(II) or Ce(III).