Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/73611
Título: | Nanocomposite polymer electrolytes of sodium alginate and montmorillonite clay |
Autor(es): | Sentanin, Franciani C. Caliman, Willian R. Sabadini, Rodrigo C. Cavalheiro, Carla C. S. Pereira, Rui Francisco Gonçalves Pinto Fernandes Silva, Maria Manuela Pawlicka, Agnieszka |
Palavras-chave: | Nanocomposites Polymer electrolytes Clay Sodium alginate |
Data: | 8-Abr-2021 |
Editora: | Multidisciplinary Digital Publishing Institute (MDPI) |
Revista: | Molecules |
Citação: | Sentanin, F.C.; Caliman, W.R.; Sabadini, R.C.; Cavalheiro, C.C.S.; Pereira, R.F.P.; Silva, M.M.; Pawlicka, A. Nanocomposite Polymer Electrolytes of Sodium Alginate and Montmorillonite Clay. Molecules 2021, 26, 2139. https://doi.org/10.3390/molecules26082139 |
Resumo(s): | Nanocomposite polymer electrolytes (NPEs) were synthesized using sodium alginate (Alg) and either sodium (SCa-3-Na<sup>+</sup>)- or lithium (SCa-3-Li<sup>+</sup>)-modified montmorillonite clays. The samples were characterized by structural, optical, and electrical properties. SCa-3-Na<sup>+</sup> and SCa-3-Li<sup>+</sup> clays’ X-ray structural analyses revealed peaks at 2θ = 7.2° and 6.7° that corresponded to the interlamellar distances of 12.3 and 12.8 Å, respectively. Alg-based NPEs X-ray diffractograms showed exfoliated structures for samples with low clay percentages. The increase of clay content promoted the formation of intercalated structures. Electrochemical Impedance Spectroscopy revealed that Alg-based NPEs with 5 wt% of SCa-3-Na<sup>+</sup> clay presented the highest conductivity of 1.96 × 10<sup>−2</sup> S/cm<sup>2</sup>, and Alg with 10 wt% of SCa-3-Li<sup>+</sup> showed conductivity of 1.30 × 10<sup>−2</sup> S/cm<sup>2</sup>, both measured at 70 °C. From UV-Vis spectroscopy, it was possible to infer that increasing concentration of clay promoted a decrease of the samples’ transmittance and, consequently, an increase of their reflectance. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/73611 |
DOI: | 10.3390/molecules26082139 |
e-ISSN: | 1420-3049 |
Versão da editora: | https://www.mdpi.com/1420-3049/26/8/2139 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CDQuim - Artigos (Papers) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
molecules-26-02139.pdf | 1,64 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons