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Dynamic optimization of semicontinuous emulsion copolymerization reactions: composition and molecular weight distribution

2001; Elsevier BV; Volume: 25; Issue: 4-6 Linguagem: Inglês

10.1016/s0098-1354(01)00658-5

1873-4375

Cláudia Sayer, Gurutze Arzamendi, José M. Asúa, Enrique Luis Lima, José Carlos Pinto,

Process Optimization and Integration

Iterative dynamic programming (IDP) is used to compute optimal monomer and chain transfer agent feed profiles to produce polymer with specified copolymer composition and molecular weight distribution. The approach used allows the implementation of constrained optimization procedures for systems described by complex mathematical models, as those needed for proper description of emulsion copolymerization reactors, especially when the computation of the whole molecular weight distribution is desired. The proposed approach is applied to the semicontinuous methyl methacrylate (MMA)/butyl acrylate (BuA) emulsion copolymerization in stirred tank reactors, using dodecanethiol as chain transfer agent (CTA). It is shown that this technique allows the effective computation of feed policies for the production of copolymers with constant composition and well-defined molecular weight distributions.