Akaganeite polymer nanocomposites

Millan, A. ; Urtizberea, A. ; Natividad, E. (Universidad de Zaragoza) ; Luis, F. (Universidad de Zaragoza) ; Silva, N. J. O. ; Palacio, F. ; Mayoral, I. ; Ruiz-Gonzalez, M. L. ; Gonzalez-Calbet, J. M. ; Lecante, P. ; Serin, V.

Resumen: An “in situ” method for the production of akaganeite polymer nanocomposites is described. A controlled precipitation is achieved by using a polymer matrix, polyvinylpyridine, containing N-base functional groups that form coordination bonds with iron ions. The resulting materials have permitted the observation of two sources of magnetic moment in akaganeite nanoparticles: (1) finite size effects with a characteristic blocking temperature below 2 K; and (2) a deficient Cl− occupancy, with a characteristic blocking temperature around 18 K. Moreover, the nanocomposites can be dissolved in slightly acidic media to obtain stable aqueous nanoparticle dispersions that could be useful in biomedical applications.

Idioma: Inglés

DOI: 10.1016/j.polymer.2009.01.034

Año: 2009

Publicado en: Polymer 50, 5 (2009), 1088-1094
ISSN: 0032-3861

Factor impacto JCR: 3.573 (2009)

Categ. JCR: POLYMER SCIENCE rank: 10 / 76 = 0.132 (2009) - Q1 - T1

Financiación: info:eu-repo/grantAgreement/ES/MICINN/CSD2007-00010
Financiación: info:eu-repo/grantAgreement/ES/MICINN/MAT2007-61621

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Cienc.Mater. Ingen.Metal. (Dpto. Ciencia Tecnol.Mater.Fl.)
Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)