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Ionic conductive polymers based on polymethylsiloxane graft‐crosslinked with oligo(ethylene oxide)
Author(s) -
Mei Henry L.,
Okamoto Yoshiyuki,
Skotheim Terje
Publication year - 1990
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.1990.220010308
Subject(s) - materials science , ionic conductivity , thermogravimetric analysis , ethylene oxide , polymer , salt (chemistry) , thermal stability , polymer chemistry , glass transition , differential scanning calorimetry , conductivity , lithium (medication) , trifluoromethanesulfonate , sulfonate , oxide , chemical engineering , copolymer , composite material , chemistry , organic chemistry , sodium , medicine , physics , catalysis , electrode , metallurgy , engineering , electrolyte , thermodynamics , endocrinology
Polymethylsiloxane graft‐crosslinked with oligo(ethylene oxide) (EO) was synthesized and characterized. The polymer was an elastic solid and stable to hydrolysis. Polymer/salt complexes were formed on mixing with lithium trifluoromethane‐sulfonate(LiCF 3 SO 3 ). The ionic conductivity of the complexes was measured by complex impedance method and the conductivity reached 6 × 10 −5 S cm −1 at 25°C and 1.5 × 10 −4 S cm −1 at 40°C. The effect of salt concentration, crosslinking, length of EO units and moisture content on the conductivity were investigated. Glass transition temperature and thermal stability of the polymer and the polymer/salt complexes were determined by differential scanning calorimeter and thermogravimetric analysis measurements.