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Polyurethane/acrylate crosslinked gel polymer electrolytes

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2,4‐Toluene diisocyanate, poly(propylene glycol), poly(ethylene glycol) (PEG) and 2‐hydroxyethyl methacrylate were used to synthesize PEG–UA (urethane acrylate) monomer. The crosslinked polymer and gel polymer electrolytes were prepared in dioxane by free radical polymerization. The swelling behaviour, thermal degradation properties, morphology and ionic conductivity of the gel polymer electrolytes were investigated. With decrease in the proportion of dioxane used, the synthesized polymer's network density increased, its affinity with a solution of 1 M LiClO4 in propylene carbonate (PC) decreased, and more microgel which diffused in the network. At the same time, the conductivity increased and reached 4 × 10−4 S cm−1 at 25 °C. Copyright © 2003 Society of Chemical Industry
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Keywords: affinity; crosslinked urethane acrylate; gel polymer electrolyte; ionic conductivity; microgel

Document Type: Research Article

Affiliations: School of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China

Publication date: August 1, 2003

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