Elasticity of the spatial network of hydrogen bonds in liquids and solutions

Abstract Elasticity of the spatial H-bond network is manifested in the tendency to retain its initial configuration. It is described most adequately by the isothermal compressibility or by the inverse value – the module of all-round compression. From experimental data on the isothermal compressibility of liquids with and without three-dimensional network we calculated the elasticity at 298 K. A comparison of these two classes of liquids shows, that the elasticity of liquids with spatial network of H-bonds is several times higher than that without and that its dependence on the length of the hydrocarbon chain in the molecule is different. This analysis led us to the conclusion that the elasticity of liquids with spatial H-bond network should be attributed to the elasticity of the H-bond network. We also studied the elasticity of the common spatial network of H-bonds in aqueous solutions of diamines, diols and aminoalcohols.