2024-03-29T01:54:48Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1531982023-01-02T12:48:09Zcom_10261_28com_10261_4col_10261_281
2017-07-14T12:58:29Z
urn:hdl:10261/153198
Characterization of Ferrofluid-Based Stimuli-Responsive Elastomers
de Pedro, Sandra
Muñoz-Berbel, Xavier
Rodríguez Rodríguez, Rosalía
Sort, Jordi
Plaza, José Antonio
Bruegger, Juergen
Llobera, Andreu
Cadarso Busto, Víctor Javier
European Commission
Ministerio de Economía y Competitividad (España)
Stimuli-responsive materials undergo physicochemical and/or structural changes when a specific actuation is applied. They are heterogeneous composites, consisting of a non-responsive matrix where functionality is provided by the filler. Surprisingly, the synthesis of polydimethylsiloxane (PDMS)-based stimuli-responsive elastomers (SRE) has seldomly been presented. Here, we present the structural, biological, optical, magnetic, and mechanical properties of several magnetic SRE (M-SRE) obtained by combining PDMS and isoparafin-based ferrofluid (FF). Independently of the FF concentration, results have shown a similar aggregation level, with the nanoparticles mostly isolated (>60%). In addition to the superparamagnetic behavior, the samples show no cytotoxicity except the sample with the highest FF concentration. Spectral response shows FF concentrations where both optical readout and magnetic actuation can simultaneously be used. The Young’s modulus increases with the FF concentration until the highest FF concentration is used. Our results demonstrate that PDMS can host up to 24.6% FF (corresponding to 2.8% weight of Fe3O4 nanoparticles concentration). Such M-SRE are used to define microsystems – also called soft microsystems due to the use of soft materials as main mechanical structures. In that scenario, a large displacement for relatively low magnetic fields (<0.3 T) is achieved. The herein presented M-SRE characterization can be used for a large number of disciplines where magnetic actuation can be combined with optical detection, mechanical elements, and biological samples.
2017-07-14T12:58:29Z
2017-07-14T12:58:29Z
2016-12-12
2017-07-14T12:58:29Z
artículo
Front. Mech. Eng. 2: 12 (2016)
2297-3079
http://hdl.handle.net/10261/153198
10.3389/fmech.2016.00012
http://dx.doi.org/10.13039/501100000780
http://dx.doi.org/10.13039/501100003329
en
Publisher's version
http://dx.doi.org/10.3389/fmech.2016.00012
Sí
info:eu-repo/grantAgreement/EC/FP7/209243
Copyright © 2016 de Pedro, Muñoz-Berbel, Rodríguez-Rodríguez, Sort, Plaza, Brugger, Llobera and Cadarso.
http://creativecommons.org/licenses/by/4.0/
openAccess
Frontiers Media