INDEX reactor curve

This trend is illustrated by the curves for the micro-mixed reactor in Figures 8 through 14. Also characteristic of the seeded, micro-mixed reactor is the convergence of the polydispersity index to 2 for a high degree of polymerization. This trend is illustrated to some extent in Table VI which presents the calculated degrees of polymerizations. 

The conversions in a PMMR for an endothermic and an exothermic reaction as a function of the reactor temperature are given in Figure 11.24 and Figure 11.25, respectively. The intersection of a material balance curve with a given ratio of the permeation to reaction rate and an energy balance line with a known heat generation index provides the conversion under the operating conditions. 

Figure 13.1. Dispersion index as a function of monomer conversion, for polymerizations with instantaneous initiation, no termination and no chain transfer (e.g., ionic polymerizations), for three reactor types. The molecular monomer initiator ratio is 100. For much higher (more realistic) values of this ratio the folds in the curves coincide with the vertical axis.

The polydispersity index in the first reactor is always equal to 2, independent of conversion and intensity of chain transfer. This is in contrast to batch polymerization, where Pvi/Pn can exceed 4. The MWD of the polymer formed in the first reactor is the most probable Floty distribution, as for hving polymerization in CSTR, but with a considerably smaller Typical MWD curves of the polymer formed in CSTRs are... 

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