Abstract: The theory of sol-gel distribution and gelatinization region is a powerful tool for dealing with the structure of crosslinking networks in the molecular level in the classical theory. The present paper covers the sol-gel distribution and gelatinization of A_a-B_b(B′)_btype of polycondensation and the q_b'-S equation obtained from T_b' =T_bS_a/S_b. The experimental results with polyester as the model compound supports the theoretical ones of this paper.

Key words: Sol-gel distribution, Gelatinization region, A_a-B_b(B′)_btype of polycondensation