Synthesis and Characterization of Novel Ionoconductor Gels for Biomedical Applications in Space

Paola Romagnoli*, Maria Luisa Di Vona, Livio Narici, Walter G. Sannita, Enrico Traversa, Silvia Licoccia

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Under the framework of the project Anomalous Long Term Effects in Astronauts, an experiment to study the risk for functional brain anomalies due to cosmic radiation during long manned missions, a new gel-type polymer electrolyte membrane for recording bioelectric signals in space has been developed. Ionic conducting gels have been formed by immobilizing liquid solutions, containing LiX salts (X = CIO4, CF3SO3) dissolved in 1,2-diethoxyethane (gly), using poly(methyl methacrylate) (PMMA) as the polymeric matrix. The electrical properties of these membranes have been studied using impedance spectroscopy, The membranes exhibit good mechanical and chemical stability and high conductivity at room temperature (10 3 to 10 4 S cm 1). The highest conductivity value has been determined for membranes prepared from LiCO4-gly-PMMA having molar composition 7.19/64.01/28.80%. Preliminary experiments on electroencephalogram signals recorded with this new gel showed that the recordings are almost identical to those measured simultaneously using a conventional apparatus.

Original languageEnglish (US)
JournalJournal of the Electrochemical Society
Volume148
Issue number12
DOIs
StatePublished - Dec 1 2001

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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