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Paradigm Shift for Preparing Versatile M2+-Free Gels from Unmodified Sodium Alginate

Pérez-Madrigal, Maria M. ; Torras, Joan ; Casanovas, Jordi ; Häring, Marleen ; Alemán, Carlos ; Díaz, David Díaz



Abstract

This manuscript describes a new route to prepare rapidly Ca2+-free hydrogels from unmodified sodium alginate by simply mixing with small organic molecules such as poly(carboxylic acid) compounds as cross-linker agents instead of classical divalent metal salts such as CaCl2. Dimethyl sulfoxide (DMSO) was also found to induce the rapid gelation of aqueous alginate solutions. The gelation process ...

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