Pullulan-1-Ethyl-3-Methylimidazolium Tetrafluoroborate Composite as a Water-Soluble Active Component for Vibration Sensors

Summary

Electronic waste has pushed research towards devices that biodegrade, or even dissolve, once their working life ends. This work presents a vibration sensor built entirely around that idea: an electrospun pullulan membrane - a water-soluble, biodegradable biopolymer - is impregnated with the ionic liquid 1-ethyl-3-methylimidazolium tetrafluoroborate and coated with a silver-based conductive varnish. Exploiting the piezoionic effect, the resulting composite generates a measurable signal under mechanical vibration, demonstrating a functioning transducer whose active layer can be washed away in water at end of life rather than entering the e-waste stream.

Authors & Affiliations

• Giovanna Di Pasquale

  Dipartimento di Scienze Chimiche (DSC), University of Catania, Italy
• Salvatore Graziani Corresponding

  Dipartimento di Ingegneria Elettrica Elettronica e Informatica (DIEEI), University of Catania, Italy
• Antonino Pollicino

  Dipartimento di Ingegneria Civile e Architettura (DICAr), University of Catania, Italy
• Carlo Trigona

  Dipartimento di Ingegneria Elettrica Elettronica e Informatica (DIEEI), University of Catania, Italy

Linari Electrospinning Systems

Topics

Materials