Thiol living radical polymerization

Free radical initiators having alcoholic or acidic functions can be deactivated by a living cationic polymer. Thus the alkali metal salt of succinic acid peroxide reacts with a cationic polymer to produce a product which is used for radical polymerization of a second monomer." Another approach uses a transfer agent like thiol s as deactivator. The functionalized polymer, introduced into a free radical system, produces a sulfide radical able to initiate radical polymerization... 

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