Concentration Fluctuations and Surface Adsorption in Hydrogen-Bonded Mixtures

摘要: Concentration fluctuations of the 1,4-butanediol + 1-dodecanol mixture have been characterized by laser light-scattering experiments at two temperatures. The results show that both components a clear tendency toward heterocoordination increases with temperature. combination concentration fluctuation surface tension measurements provided precise values excess adsorption Γ21 as function composition. shows maximum for mole fraction x2 ≈ 0.02; decreases increasing position this contrasts which local compositions extrema in bulk. entropy versus composition curve maxima and minima throughout range. This behavior resembles found some water−alcohol mixtures. Using experimental data, we predicted using lattice-fluid model takes into account the...