AbstractThe polymerization of ARB type reversible step growth polymerization in semibatch reactors has been simulated. It is assumed that the condensation byproductWand the monomer P1both can vaporize, but P1is refluxed back to the reactor. Raoults law as well as Flory–Huggins theory have been used to account for vapor–liquid equilibrium. The degree of polymerization, μn, and the polydispersity indexDNhave been computed for various situations. The results are found to be most sensitive to the total pressure and the equilibrium constant. A limiting total pressure historyPT(T) has been obtained, going below which does not help to increase μn. The final set of equations incorporate both equalities as well as inequalities, and a simple and efficient computational scheme has been suggested to solve
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