Anionic Vinyl Polymerization. Anionic addition polymerization is a form of chain growth polymerization or addition polymerization that involves the polymerization of monomers initiated with anions. Let s see how we get from a vinyl monomer to a vinyl polymer using for an example the simplest vinyl polymer polyethylene polyethylene is made from the monomer ethylene which is also called ethene when polymerized the ethylene molecules are joined along the axes of their. This type of polymerization is often employed to produce synthetic polydiene rubbers solution styrene butadiene rubbers sbr and thermoplastic styrenic elastomers.
Each reactive monomer goes on to react with other monomers to form a linear polymer. Anionic polymerization takes place with monomers having electron withdrawing groups such as nitrile carboxyl phenyl and vinyl.
Anionic polymerizations can be divided into initiation propagation and termination chain transfer does not occur to any appreciable extent and thus the polymerization may be living.
Anionic polymerization is a type of chain growth polymerization in which an anionic initiator transfers a charge to a vinyl monomer which then becomes reactive. Thus in this chapter general aspects of cationic polymerization are discussed followed by a brief overview of early development of living cationic polymerization. Anionic addition polymerization is a form of chain growth polymerization or addition polymerization that involves the polymerization of monomers initiated with anions. Anionic polymerization involves the polymerization of vinyl monomers possessing strong electronegative groups.
