Electroinitiated copolymerization

Figure 13. Electroinitiated copolymerization of a-methyl styrene and isoprene ( -non ultrasonic o - ultrasonic). Top figure—isoprene content of copolymer bottom figure—overall conversion (taken from ref. 166).

Figure 18 - Electroinitiated copolymerization of a-methylstyrene and isoprene. (a) isoprene content of polymer (b) overall conversion (open symbols with ultrasound full symbols without ultrasound)...

We condude this section by stating that the field-accelerating effect on copolymerizations and the change of the monomer reactivity ratio with the field can be accounted for in terms of the interpretation proposed for cationic homopolymerizations, namely the field-facilitated dissociation of the growing chain ends. We should note that the observed field influence on the copolymerization excludes the possibility of the electroinitiated polymerization mechanism. 

Another coherent series of reports on sonoelectrosynthesis concerns the effect of ultrasound on electroinitiated polymerizations. The potentiostatic control of a number of copolymerizations was examined and compared to the more often used galvanostatic control technique. 

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