ABSTRACT:The proposed technique allows determination of variation in a macromolecular coil structure of dimethyl diallyl ammonium chloride, characterized by its fractal dimension, during polymerization. It is shown that this one factor, unaccounted for in conventional theories, determines the most important characteristics of a polymerization process: rate, output of a finite product, and molecular weight. Further, the methods of fractal kinetics allow the quantitative description of synthesis of polymers and, in particular, give the correct shape of the conversion degreetime kinetic curve.

The results of the present study have shown that the molecular weight distribution of polydimethyldiallyl ammonium chloride is simulatable and predictable within the framework of the irreversible cluster-cluster aggregation model. The shape and position of a curve of molecular weight distributiion are influenced by a number of factors, for example, by macromolecular coil structure, stochastic contribution of a coil environment to polymerization intensity, and level of coil destruction during polymer-ization. These factors can be linked by simple relationships to technical characteristics of the polymerization process, which is especially important for fractal applictions of the proposed theoretical model.