Decay of free radicals in irradiated PMMA at high pressures studied by ESR

✍ Scribed by F. Szőcs

• Publisher: John Wiley and Sons
• Year: 1970
• Tongue: English
• Weight: 204 KB
• Volume: 14
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1970.070141018

✦ Synopsis

Abstract

The decay of free radicals in irradiated PMMA subjected to high pressures has been studied by the method of ESR. The rate constants and activation energies has been determined for the decay of free radicals at the pressures of 5000 and 10,000 atm over the temperature range of 100–170°C. It has been found that the rate of decay was reduced essentially by the effect of high pressure. The mechanism of the decay of free radicals in solid polymers is being discussed. The important influence of the motion of macromolecule segments on the course of radical reactions in solid phase is printed out.