M. Rosche et M. Schulz, GELATION AS A PERCOLATION PROBLEM WITH FINITE DIFFUSION, Makromolekulare Chemie. Theory and simulations, 2(3), 1993, pp. 361-369
The formation of polymer networks (gelation process) was studied by a
numerical simulation of a lattice spin model with 3 states, which allo
ws the representation of simple diffusion and aggregation processes. N
ear the percolation threshold, p(c), the same critical exponents were
detected as in the usual diffusion-free classical percolation theory.
Only non-universal values (for example p(c)) show a significant depend
ence on the ratio between diffusion and reaction constants.