Stable Free Radical Polymerization

Stable-radical-mediated polymerization (SRMP) or also stable-free-radical-mediated polymerization (SFRP) is a special type of controlled radical polymerization . In SRMP, radical polymerization is controlled, i.e. the average molar mass of the polymer obtained is specifically influenced by adding a stable radical to the reaction mixture. The control results from a strong reduction in the concentration of propagating radicals through the establishment of a chemical equilibrium through reversible termination of the radicals in which a so-called dormant species is formed.

Since the substance class of nitroxides (e.g. TEMPO ) is mostly used for this purpose, one often speaks only of nitroxide-mediated polymerization (NMP), even if SRMP is a more comprehensive term.

See also

• Atom-Transfer-Radical Polymerization
• RAFT polymerization
• Free radical polymerization

literature

• Krzysztof Matyjaszewski , Thomas. P. Davis: Handbook of Radical Polymerization. Wiley-Interscience, Hoboken 2002, ISBN 978-0471392743

Individual evidence

1. ↑ Aubrey D. Jenkins, Richard G. Jones, Graeme Moad: Terminology for reversible-deactivation radical polymerization previously called "controlled" radical or "living" radical polymerization (IUPAC Recommendations 2010) , In: Pure and Applied Chemistry , Vol. 82, No. 2, 2010, pp. 483-491. ( pdf )