Slow Initiation Plus Chain Transfer to Monomer

2 Slow Initiation Plus Chain Transfer to Monomer 

The chain transfer constants can be obtained from the intercept and slop of Eq. (40) (see Fig. 14B). In this experiment, only two points were suitable for the determination of c1 and c11, causing high uncertainty in their values (see Fig. 14A). According to these results cB 0, and c = 4.74 10 4 mole/L. From 

(35) and (36), we can now readily calculate the [NJ = ((conversion) function (see Fig. 14A). Since the conversion = f(time) function is always available, [NJ = f(C) can easily be converted to [NJ = f(time) function. From this point the procedure presented in Section 2.3.1 can be followed. (In this treatment instead of [N], [NJ stands for the concentration of purposely added initiator). See Eqs. (27) and (31). 

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Fig. 14A-C. Isobutylene polymerization by TMPCl/TiCl4 and HX /TiCl4 at — 60 °C A,B determination of chain transfer constants in systems with slow initiation plus chain transfer to monomer C N vs conversion plot at various ED concentrations in the presence of initiator ([TEA] = (mol/l) =5-10 A = 1.5-HT3, = 3-l(T3, = 6-103) and in the absence of initiator (O, A, , V)...

J.J Slow Initiation Plus Initiation by "HX Plus Chain Transfer to Monomer... 

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