Mechanically tunable PDMS-based polyHIPE acoustic materials

Tucker J. Mckenzie , Kathryn Rost , Soren Smail , Olivier Mondain-Monval (1) , Thomas Brunet (2) , Neil Ayres

1 CRPP - Centre de Recherche Paul Pascal
2 I2M - Institut de Mécanique et d'Ingénierie

Polymer-based acoustic metamaterials possess properties including acoustic wave manipulation, cloaking, and sound dampening. Here, PDMS-based elastomers were prepared using thiol–ene “click reactions” with emulsion templating. Acoustic analysis showed these materials achieved sound speed values of ∼ 40 m s−1, close to the predicted minimum of ∼25 m s−1 attainable.

Domaines: Matériaux

Tucker J. Mckenzie, Kathryn Rost, Soren Smail, Olivier Mondain-Monval, Thomas Brunet, et al.. Mechanically tunable PDMS-based polyHIPE acoustic materials. Journal of Materials Chemistry C, 2022, 10 (16), pp.6222-6226. ⟨10.1039/d2tc00136e⟩. ⟨hal-03697196⟩