High energy density interpenetrating networks from ionic networks and silicone

Liyun Yu, Frederikke Bahrt Madsen, Søren Hvilsted, Anne Ladegaard Skov

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The energy density of dielectric elastomers (DEs) is sought increased for better exploitation of the DE technology since an increased energy density means that the driving voltage for a certain strain can be lowered in actuation mode or alternatively that more energy can be harvested in generator mode. One way to increase the energy density is to increase dielectric permittivity of the elastomer. A novel silicone elastomer system with high dielectric permittivity was prepared through the development of interpenetrating networks from ionically assembled silicone polymers and covalently crosslinked silicones. The system has many degrees of freedom since the ionic network is formed from two polymers (amine and carboxylic acid functional, respectively) of which the chain lengths can be varied, as well as the covalent silicone elastomer with many degrees of freedom arising from amongst many the varying content of silica particles. A parameter study is performed to elucidate which compositions are most favorable for the use as dielectric elastomers. The elastomers were furthermore shown to be self-repairing upon electrical breakdown.
Original languageEnglish
Title of host publicationProceedings of SPIE: Electroactive Polymer Actuators and Devices (EAPAD) 2015
EditorsBar-Cohen Yoseph
Number of pages11
PublisherSPIE - International Society for Optical Engineering
Publication date2015
Article number94300T
Publication statusPublished - 2015
EventElectroactive Polymer Actuators and Devices (EAPAD) XVII - Town & Country Resort and Convention Center, San Diego, California, United States
Duration: 9 Mar 201512 Mar 2015
Conference number: 9430


ConferenceElectroactive Polymer Actuators and Devices (EAPAD) XVII
LocationTown & Country Resort and Convention Center
CountryUnited States
CitySan Diego, California
SeriesProceedings of SPIE, the International Society for Optical Engineering

Bibliographical note

Copyright 2015 Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic electronic or print reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.


  • Silicone elastomers
  • Dielectric elastomers
  • PDMS
  • Self-repairing
  • Ionic moieties

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