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Pressure dependence of free radical decay in irradiated isotactic polypropylene

✍ Scribed by F. Szöcs; O. Rostašová

Publisher
Elsevier Science
Year
1975
Tongue
English
Weight
152 KB
Volume
11
Category
Article
ISSN
0014-3057

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✦ Synopsis

Free radicals were generated in isotactic polypropylene by gamma-irradiation. The samples were annealed at pressures between 1 and 8000 arm and temperatures between 60 and 110 °. The concentration of free radicals was estimated by the ESR method. The rate constants of free radical decay were determined for various pressures and temperatures. The rate constant of free radical decay decreases with increasing pressure while the activation energy increases. The relationship between the kinetics of molecular motion and the kinetics of free radical decay is discussed.

📜 SIMILAR VOLUMES

Dependence of free radical decay on pres
Dependence of free radical decay on pressure in irradiated pmma
✍ F. Szöcs; J. Plaček 📂 Article 📅 1972 🏛 Elsevier Science 🌐 English ⚖ 216 KB

The influence of pressure on the decay of free radicals in irradiated PMMA has been investigated by ESR over the ranges 80-130 ° and 1-13,000 atm. Dependence on pressure of both the rate constants and activation energies for decay has been determined. The influence of pressure on the mechanism of de

Influence of pressure of free radical de
Influence of pressure of free radical decay in irradiated polyethylene
✍ F. Szöcs; O. Rostašova; J. Tiňo; J. Plaček 📂 Article 📅 1974 🏛 Elsevier Science 🌐 English ⚖ 166 KB

Information is given on the effect of high pressure on the decay of free radicals in irradiated polyethylene. The dependence of the rate constant for decay on pressure (1-13,000 atm) was determined at 80, 90, 100 and 110 °. The mechanism of the effect of pressure on the rate constant and activation

Decay of free radicals in irradiated PMM
Decay of free radicals in irradiated PMMA at high pressures studied by ESR
✍ F. Szőcs 📂 Article 📅 1970 🏛 John Wiley and Sons 🌐 English ⚖ 204 KB 👁 1 views

## 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.