Polymerization death charge

Genuine polymerization of the zwitterions, themselves, by intermolec-ular charge reduction is relatively rare. An example of this is the death charge polymerization described in Section 27.4. 

The compounds formed are converted to zwitterions with sodium methylate or ion exchangers, and these are then polymerized to polysulfide ethers with ring opening and loss of charge in what is known as death-charge polymerization, i.e.,... 

The polymerization of zwitterions can be considered to be a special case of such a termination reaction. This leads to a charge neutralization ( death charge polymerization ), giving uncharged polymers, and so must be distinguished from polymerization via zwitterions ... 

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