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Polímeros

versão impressa ISSN 0104-1428versão On-line ISSN 1678-5169

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SAMIR, My Ahmed Saïd Azizi; ALLOIN, Fannie; SANCHEZ, Jean-Yves  e  DUFRESNE, Alain. Nanocomposite polymer electrolytes based on poly(oxyethylene) and cellulose whiskers. Polímeros [online]. 2005, vol.15, n.2, pp.109-113. ISSN 1678-5169.  http://dx.doi.org/10.1590/S0104-14282005000200009.

Solid lithium-conducting nanocomposite polymer electrolytes based on poly(oxyethylene) (POE) were prepared from high aspect ratio cellulosic whiskers and lithium imide salt, LiTFSI. The cellulosic whiskers were extracted from tunicate -a sea animal- and consisted of slender parallelepiped rods that have an average length around 1 µm and a width close to 15 nm. High performance nanocomposite electrolytes were obtained. The filler provided a high reinforcing effect while a high level of ionic conductivity was retained with respect to unfilled polymer electrolytes. Cross-linking and plasticizing of the matrix as well as preparation of the composites from an organic medium were also investigated.

Palavras-chave : Nanocomposite; polymer electrolyte; cellulose; poly(oxyethylene).

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