Revision as of 11:34, 26 August 2019 edit Smokefoot (talk \| contribs) Autopatrolled, Extended confirmed users, Pending changes reviewers, Rollbackers 78,524 edits fmt citation ← Previous edit		Revision as of 11:41, 26 August 2019 edit undo Smokefoot (talk \| contribs) Autopatrolled, Extended confirmed users, Pending changes reviewers, Rollbackers 78,524 edits →Initiation by electron transfer: fig Next edit →
Line 43: ===Initiation by electron transfer=== Initiation of styrene polymerization with sodium ~~naphthenate~~naphthalene proceeds by [[electron transfer]] from the [[naphthalene]] radical anion to the monomer. The resulting radical dimerizes to give a dilithio compound, which then functions as the initiator. Polar solvents are necessary for this type of initiation both for stability of the anion-radical and to solvate the cation species formed.<ref name=Odian/> The anion-radical can then transfer an electron to the monomer. Initiation can also involve the transfer of an electron from the alkali metal to the monomer to form an anion-radical. Initiation occurs on the surface of the metal, with the reversible transfer of an electron to the adsorbed monomer.<ref name="Quirk"/> [[File:ET-coupledStyrene.png\|thumb\|Product of the reductive coupling of styrene, 1,4-dilithio-1,4-diphenylbutane.]] ===Initiation by strong anions===

Anionic addition polymerization: Difference between revisions