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Polymeric foams with functional nanocomposite cells

journal contribution
posted on 10.06.2015, 16:17 by P. Calcagnile, Despina Fragouli, Elisa MeleElisa Mele, Roberta Ruffilli, Athanassia Athanassiou
A novel strategy for the fabrication of elastomeric poly(dimethylsiloxane) (PDMS) foams with interconnected nanocomposite cells of controlled size is presented. Beads of the natural hydrogel calcium alginate are used as templates for the fabrication of the foams and as initiators for the functionalization of their cells with gold nanoparticles. The hydrogel beads are easily fabricated via external gelation using a fluidic system that permits the control of their size. As a subsequent step, they are assembled in containers where PDMS pre-polymer is poured. As the elastomer cures, the beads shrink releasing the liquid they contain and forming pores in the polymer matrix. By introducing gold precursor solution in the beads, it is possible to develop foams with gold nanoparticles immobilized on the surface of their cells. As the gold ion solution is released by the beads, it chemically interacts with the PDMS, forming nanoparticles locally on the surface of the cavities of the foams. The same procedure can be expanded to various substances resulting in functional foams with localized properties, with applications envisaged in the biomedical field.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Materials

Published in

RSC ADVANCES

Volume

4

Issue

37

Pages

19177 - 19182 (6)

Citation

CALCAGNILE, P. ... et al, 2014. Polymeric foams with functional nanocomposite cells. RSC Advances, 4 (37), pp. 19177 - 19182.

Publisher

© Royal Society of Chemistry

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2014

Notes

This paper is closed access.

ISSN

2046-2069

Language

en

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