THERMOELASTIC STRESSES IN IRRADIATED SAMPLES OF POLY(METHYL METHACRYLATE) BLOCK POLYMERS IN VARYING TEMPERATURE-FIELDS

Authors
SMOLYANSKII AS MISOCHKO EY FILIPPOV PG ZHDANOV GS KLINSHPONT ER
Citation
As. Smolyanskii et al., THERMOELASTIC STRESSES IN IRRADIATED SAMPLES OF POLY(METHYL METHACRYLATE) BLOCK POLYMERS IN VARYING TEMPERATURE-FIELDS, High energy chemistry, 27(5), 1993, pp. 346-351
Citations number
25
Categorie Soggetti
Chemistry Physical
Journal title
High energy chemistry → ACNP
ISSN journal
00181439
Volume
27
Issue
5
Year of publication
1993
Pages
346 - 351
Database
ISI
SICI code
0018-1439(1993)27:5<346:TSIISO>2.0.ZU;2-F
Abstract
The response was studied of samples of poly(methyl methacrylate) block polymers, 10 x 10 x 20 in size, irradiated at a dosage range of 50-50 0 kGy at room temperature, to change of temperature of the environment . A thermostimulated fracture was observed on cooling with helium gas from 300 to 10 K of samples irradiated to doses higher than 100 kGy. T he fracture of the polymer samples occurred at a rate of the temperatu re change of 1-2 K/sec; at a lower cooling rate, the fracture of the s amples was not observed over the entire dose range. The evaluations ob tained agree with the results of the calculation of the maximal coolin g rate at which a fracture of the PMMA samples used in the experiment may occur.