Artículos de revistas
Synthesis And Characterization Of Pva Ferrogels Obtained Through A One-pot Freezing-thawing Procedure
Registro en:
Colloid And Polymer Science. , v. 289, n. 17-18, p. 1839 - 1846, 2011.
0303402X
10.1007/s00396-011-2501-1
2-s2.0-84855185827
Autor
Gonzalez J.S.
Hoppe C.E.
Muraca D.
Sanchez F.H.
Alvarez V.A.
Institución
Resumen
Polyvinyl alcohol (PVA) ferrogels were easily obtained through a one-pot technique that involves co-precipitation of iron salts in the presence of a PVA solution, followed by freezing-thawing cycles of the resulting nanoparticles (NPs) dispersions. The protecting effect of PVA enabled the synthesis of small magnetic NPs that did not agglomerate in the initial solution allowing the synthesis of well-dispersed ferrogels by physical cross-linking. Physical properties of the physically cross-linked ferrogels, as swelling ability, melting temperature, and crystallinity, were barely affected by the presence of NPs, presenting similar or improved values when compared with chemically cross-linked systems. 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