MCKENZIE, Tucker; HEATON, Paul; RISHI, Kabir; KUMAR, Raj; BRUNET, Thomas; BEAUCAGE, Gregory; MONDAIN-MONVAL, Olivier; AYRES, Neil

doi:10.1021/acs.macromol.0c00217

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MCKENZIE, Tucker
Department of Chemistry [Cincinnati]

HEATON, Paul
Department of Chemistry [Cincinnati]

RISHI, Kabir
University of Cincinnati [UC]

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Article de revue

Ce document a été publié dans

Macromolecules. 2020, vol. 53, n° 10, p. 3719-3727

American Chemical Society

Résumé en anglais

Porous elastomeric polymers have been used in a wide range of applications because of their unique characteristics such as biocompatibility,gas permeability, thermal stability, and hydrophobic and dielectric properties. Poly(dimethyl siloxane) (PDMS), a commercially availableelastomer, has also been shown to exhibit specific acoustic properties. However, the material properties were limited because of a lack of control over the chemistry used to prepare the cross-linked PDMS elastomer. Here, the synthesis of PDMS-based polymerized medium internal-phase emulsions (polyMIPEs) with tunable storage shear moduli (G′) has been performed using macromolecular thiol−ene reactions. Storage shear modulus values from ∼38 to ∼330 kPa were achieved by changing the stoichiometric ratio of the thiol-to-ene-functionalized PDMS, whereas the porosity of the polyMIPEs was controlled by the volume of the aqueous phase used in the emulsion formulation. Very low sound velocities (∼40 m/s) through the porous materials were recorded using acoustic characterization. Therefore, this work provides an example of the synthesis of soft polyMIPEs with possible applications as acoustic materials.< Réduire

URI

https://oskar-bordeaux.fr/handle/20.500.12278/75972

DOI

http://dx.doi.org/10.1021/acs.macromol.0c00217

Project ANR

Advanced Materials by Design - ANR-10-LABX-0042
Initiative d'excellence de l'Université de Bordeaux - ANR-10-IDEX-0003
Revêtements fonctionnels acoustiques à base de Métamatériaux souples - ANR-15-CE08-0024

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Importé de hal

Unités de recherche

Institut de Mécanique et d’Ingénierie de Bordeaux (I2M) - UMR 5295