Effect of Mixing on Systems Undergoing Chemical Reactions

5 Effect of Mixing on Systems Undergoing Chemical Reactions 

Two-component, catalyzed, interfacial polymerization of polyurethane has been previously modeled by means of a set of partial differential equations for the diffusion-reaction process, with concentration-dependent difiusivities [105-108]. Their main assumptions were that reactions were fadlitated only toward the end of the mixing process, such as at the end of the reaction injection-molding process, wherein molecular diffusion was significant. It was also assumed that the diisocyanate and diols formed lamellar mixing structures, whereby alternative striations of diisocyanates and diols were present. 

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