Abstract: Based on the similarities between hydrogen bonding(HB) and polycondensations, we have investigated some properties of a modeling system of HB solutions by means of the statistical theory of polymeric reactions and theory of reaction dynamics. It is shown that some systems may undergo a sol-gel phase transition process under proper conditions. The gelation condition involving the critical HB degrees is given, on which the effects of compettion between the two types of proton donors are then presented. Moreover, we discussed the size distribution of HB clusters and the related problems.

Key words: Hydrogen bonding, Statistical theory, Equilibrium reaction dynamics theory