Polymerization of 2-hydroxyethyl methacrylate induced by azo compounds: Solvent effects

Encinas, M., V; Lissi E.A.; Martínez C

Abstract

The rate of polymerization of 2-hydroxyethyl methacrylate in aqueous media, photoinitiated by aliphatic azo compounds, is proportional to the monomer concentration and the square root of the photosensitizer concentration. These results are indicative of a simple photoinitiation mechanism, in which the monomer does not interfere with the photoinitiator cleavage and the primary radicals add quantitatively to the monomer. The polymerization rate has been measured for a series of solvents and solvent mixtures. The rate correlates with the cohesive energy of the co-solvent, being faster in monomer/water mixtures. The high rates in these systems are explained in terms of the polymer conformation and solvophobic effects. Copyright © 1996 Elsevier Science Ltd.

Más información

Título de la Revista: EUROPEAN POLYMER JOURNAL
Volumen: 32
Número: 9
Editorial: Elsevier Ltd.
Fecha de publicación: 1996
Página de inicio: 1151
Página final: 1154
URL: http://www.scopus.com/inward/record.url?eid=2-s2.0-0013537076&partnerID=q2rCbXpz