Diffusion coefficients of bolaform alkane-1,n-bis(trimethylammonium bromide) surfactants
Ribeiro, A. C. F.[Ana C. F.], Santos, C. I. A. V.[Cecilia I. A. V.], Murtinho, D. B.[Dina B.], Lobo, V. M. M.[Victor M. M.], Valente, A. J. M.[Artur J. M.]
Mutual diffusion coefficients of alkane-1,n-bis(trimethylammonium bromide), CnMe6Br2 (n=8, 10, 12) surfactants have been measured using the Taylor dispersion technique, at 298.15 K, at concentrations from (0.000 to 0.0380) mol dm-3. The dependence of mutual diffusion coefficients on the concentration has been discussed in the framework of Onsager-Fuoss and Pikal models. On the basis of this discussion it is suggested that these surfactants behave as associated electrolytes. From limiting mutual diffusion coefficients values, extrapolated from experimental values for c tending to 0, limiting ionic conductance, tracer diffusion coefficients and hydration radii of alkane-1,n-bistrymethyl ammonium ions have been estimated. For the case of dodecane-1,12-bis(trimethylammonium bromide) no aggregation has been noticed up to 0.04 mol dm-3.
The table above is generated from the ThermoML associated json file (link above).
POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied;
the numbers refer to the table of compounds on the left.