Mechanically tunable PDMS-based polyHIPE acoustic materials. Issue 16 (30th March 2022)

• Record Type: Journal Article
• Authors: McKenzie, Tucker J.; Rost, Kathryn; Smail, Soren; Mondain-Monval, Olivier; Brunet, Thomas; Ayres, Neil
• Is Part Of: Journal of materials chemistry. Volume 10:Issue 16(2022)
• Page Start: 6222
• Page End: 6226
• Publication Date: 2022-03-30
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d2tc00136e
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : Porous PDMS elastomers were synthesized using emulsion templated thiol–ene "click" reactions to obtain materials with tunable storage moduli at a single porosity value that achieve low sound speed values of ∼40 m s −1 . Abstract : 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.