Effects of recycling on mechanical and thermal properties of polystyrene | Zendy

Djidjelli H. | Zendy; Benachour D. | Zendy

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Effects of recycling on mechanical and thermal properties of polystyrene

Author(s) -

Djidjelli H.,

Benachour D.

Publication year - 1998

Publication title -

macromolecular symposia

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.257

H-Index - 76

eISSN - 1521-3900

pISSN - 1022-1360

DOI - 10.1002/masy.19981270124

Subject(s) - polystyrene , materials science , thermal , composite material , expanded polystyrene , polymer , thermodynamics , physics

A commercial Polystyrene (M w = 2.5 10 5 , MFI =14.80) was extruded repeatedly from one to eight times at 190 °C. The effects of extrusion process on physical and chemical properties of polystyrene were investigated using: ‐Average molecular weight—Izod Impact strength; —Thermal properties (TGA, DTA).The results showed that processing of polystyrene leads to degradation. In fact, a decrease of 23% in the average molecular weight was observed for the 8 th cycle sample and a reduction in impact strength by 34% was also noticed for the 4 th cycle sample.

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