INTEMA   05428
INSTITUTO DE INVESTIGACIONES EN CIENCIA Y TECNOLOGIA DE MATERIALES
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Poly(vinylalcohol) Ferrogels from Chemical Crosslinking and Freezing-Thawing
Autor/es:
J.S. GONZALEZ; C.E. HOPPE; V.A. ALVAREZ
Lugar:
Madrid, España
Reunión:
Conferencia; 6th International ECNP Conference on Nanostructured Polymers and Nanocomposites; 2010
Institución organizadora:
Nanofun-Poly Network of Excellence
Resumen:
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Ferrogels are a new class of polymeric
materials whose properties can be controlled by the application of a magnetic
field. The magneto-elastic properties of such gels give them the potential use
as biomembranes, biomedical materials, biosensors, artificial muscles and
mainly as matrices for drug delivery [1,2]. Stimuli-responsive controlled
release drug from polymeric devices has been received great attention, as it
provides advantages such as better delivery efficiency and site-specific
therapy over the conventional routes of drug delivery. Polyvinyl alcohol (PVA)
is an hydrophilic polymer from which biocompatible and biodegradable high
strength hydrogels can be obtained [3]. This polymer can be crosslinking in
several way such as chemically (by using a crosslinking agent, for example
glutaraldheyde, GA) or physically (by freezing-thawing, F-T, cycles). The main
objective of this work was to synthesize and characterize ferrogels for
biomedical applications from PVA and magnetic nanoparticles (NPs) in-situ
generated, trying to find the effect of crosslinking type and nanoparticles
content on the thermal, magnetic and mechanical properties.