M. Miyamoto et al., RADICAL POLYMERIZATION OF OLIGOETHYLENE GLYCOL METHYL VINYL ETHERS INPROTIC POLAR-SOLVENTS, Macromolecular chemistry and physics, 199(1), 1998, pp. 119-125
The radical polymerization of three oligoethylene glycol methyl vinyl
ethers, ethylene glycol methyl vinyl ether, diethylene glycol methyl v
inyl ether, and triethylene glycol methyl vinyl ether, was examined in
aqueous and in alcoholic media. These monomers showed a relatively hi
gh polymerizability in aqueous media when 2,2'-azobis(2-amidinopropane
) dihydrochloride was chosen as the initiator and produced polymers of
2000<(M) over bar(n)<6600 in moderate yields. Formamide was also a go
od solvent for their radical polymerization, in which polymers of (M)
over bar(n)<1100 were produced. These solvents are considered to form
strong hydrogen-bonds with these monomers, thus stabilizing the propag
ating radical ends.