Polymer Radii and Moments in the Polycondensation Reaction of A_a Type

For the polycondensation reaction of A. type, the kth radius for k>2 can be expressed in terms of polymer moments.

ON THE POLYCONDENSATION REACTION WITH MONOMER OF A_aB_b TYPE (Ⅱ)——THE POLYMER MOMENTS

With monomer of A_aB_b type, the polymer moments of polycondensation reaction is inves-tigated in detail by means of direct differentiation technique to obtain a recursion formula.This formula is suitable for both pre-gel and post-gel in evaluating the polymer momentsexplicitly.

含引发机制的A_(f-)A_g型缩聚反应的标度研究

讨论了含引发机制的Af-Ag型缩聚反应体系,根据该反应体系的数量分布函数,导出凝胶点附近分布函数和高分子矩的渐进表示式,进一步应用标度变换,得到了描述溶胶-凝胶相变的广义标度律,揭示出含引发机制的Af-Ag型缩聚反应体系的固化过程是一个相变过程。