EFFECTS OF RECYCLING ON MECHANICAL AND THERMAL-PROPERTIES OF POLYSTYRENE

Authors
DJIDJELLI H BENACHOUR D
Citation
H. Djidjelli et D. Benachour, EFFECTS OF RECYCLING ON MECHANICAL AND THERMAL-PROPERTIES OF POLYSTYRENE, Macromolecular symposia, 127, 1998, pp. 181-185
Citations number
4
Categorie Soggetti
Polymer Sciences
Journal title
Macromolecular symposia → ACNP
ISSN journal
10221360
Volume
127
Year of publication
1998
Pages
181 - 185
Database
ISI
SICI code
1022-1360(1998)127:<181:EOROMA>2.0.ZU;2-D
Abstract
A commercial Polystyrene (M-w =2.5 10(5), MFI =14.80) was extruded rep eatedly from one to eight times at 190 degrees C. The effects of extru sion process on physical and chemical properties of polystyrene were i nvestigated using: Average molecular weight Izod Impact strength; Ther mal properties (TGA, DTA). The results showed that processing of polys tyrene leads to degradation. In fact, a decrease of 23% in the average molecular weight was observed for the 8(th) cycle sample and a reduct ion in impact strength by 34% was also noticed for the 4(th) cycle sam ple.