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Title: Polyacrylamide-gelatin polymeric networks: Effect of pH and gelatin concentration on the swelling kinetics and mechanical properties
Author: Martinez-Ruvalcaba, A.
Becerra-Bracamontes, F.
Sanchez-Diaz, J.C.
Gonzalez-Alvarez, A.
Issue Date: 2009
Abstract: This work presents the synthesis of polyacrylamide-gelatin (PAM-G) semi-interpenetrating hydrogels, as well as the study of the swelling capacity of this material at different pH's, and we report its Young modulus. The hydrogels were crosslinked with N,N-methylenebisacrylamide and synthesized at different acrylamide/gelatin weight relationship. It was observed that the swelling capacity of the hydrogels increases when the gelatin concentration is increased; while the Young modulus (at the swelling equilibrium) decreases lightly. Therefore, the gelatin has a small effect in the Young modulus, unlike its influence in the swelling ability. The swelling experiments reveal that the PAM-G hydrogels increase its swelling capacity in alkaline mediums because the presence of the hydrophobic functional groups (mainly COO-) in the gelatin structure. © 2009 Springer-Verlag.
Appears in Collections:Producción científica UdeG (prueba)

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