AGING OF DRAWN AND GAMMA-IRRADIATED ISOTACTIC POLYPROPYLENE USING HIGH OXYGEN-PRESSURE

Authors
STOJANOVIC Z KOSTOSKI D DUDIC D KACAREVICPOPOVIC Z
Citation
Z. Stojanovic et al., AGING OF DRAWN AND GAMMA-IRRADIATED ISOTACTIC POLYPROPYLENE USING HIGH OXYGEN-PRESSURE, Polymer degradation and stability, 51(1), 1996, pp. 45-49
Citations number
8
Categorie Soggetti
Polymer Sciences
Journal title
Polymer degradation and stability → ACNP
ISSN journal
01413910
Volume
51
Issue
1
Year of publication
1996
Pages
45 - 49
Database
ISI
SICI code
0141-3910(1996)51:1<45:AODAGI>2.0.ZU;2-9
Abstract
Drawn and undrawn samples of gamma-irradiated isotactic polypropylene (iPP) were aged under 0.5 MPa of oxygen at 80 degrees C. Radiation-ind uced and post-irradiation effects were observed using infra-red spectr oscopy. Changes of the elongation at break and strength at break as fu nctions of aging time and draw ratio were determined from the stress-s train measurements. It is shown that the strength at break of drawn an d gamma-irradiated iPP after accelerated aging for more than 20 h is s till high (> 50 N/mm(2)). These data were related to the radiation eff ects in drawn and undrawn iPP.