AN ANALYSIS OF FRACTAL GEOMETRY OF MACROMOLECULAR GELATION

With fractal geometry theory and based on experiments, an analysis of fractal geometry behavior of gelation of macromolecules was carried ou t. Using the cross-linking copolymerization of styrene-divinylbenzene (DVB) as an example, through the determinations of the evolution of th e molecular weight, size and the dependence of scattering intensity on the angle of macromolecules by employing laser and synchrotron small angle X-ray scattering, respectively, this chemical reaction was descr ibed quantitatively, its fractal behavior was analyzed and the fractal dimension was also measured. By avoiding the complex theories on gela tion, this approach is based on modern physical techniques and theorie s to perform the analysis of the behavior of fractal geometry of macro molecular gelation and thus is able to reveal the rules of this kind o f complicated gelation more essentially and profoundly.