مرکز منطقه ای اطلاع رساني علوم و فناوري -

چكيده لاتين :

Particle size distribution determines the major end-use properties of latex produced by emulsion. Therefore simulation and control of particle size distribution are important in emulsion polymerization. The investigated system is styrene polymerization. The model for determination of particle size distribution is based on population balance, accounting for nucleation and growth phenomena. The population balance equation (PBE) is discretized respect to particle radius. The ordinary differential equations obtained from discretization of PBE, initiator and monomers mass balances and algebraic thermodynamic equations are solved simultaneously via MATLAB programme. The accuracy of the model has been determined by the experimental results. The open-loop optimal surfactant feed profile for achieving a desired bimodal particle size distribution in a semi-batch reactor is obtained. The genetic algorithm is employed for the optimization