Efecto del catión, del anión y del co-ión sobre la agregación de líquidos iónicos en solución acuosa

AUTOR(ES)

Guzmán, Nólides Marina, Fernández, José Francisco, Parada, Mónica, Orbegozo, Carlos, Rodríguez, María Alejandra, Padrón, Alida, Thöming, Jorg

FONTE

Química Nova

DATA DE PUBLICAÇÃO

2010

RESUMO

The aggregation behavior of thirteen 1-alkyl-3-methylimidazolium based ionic liquids in aqueous solution is presented, considering variations of the alkyl side chain length as well as the anionic moiety. Cation and anion molecular volumes are selected as appropriate molecular descriptors. Additionally, the existing relationship between critical micelle concentration (CMC) and electrolyte concentration in solution is established, aiming to clarify ion effects. CMC values were obtained by measuring electrical conductivity and surface tension. It was confirmed that aggregation of ionic liquids in aqueous solution and in presence of inorganic salts is affected by the factors developed in this study.

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