✦ LIBER ✦

Dynamic shear modulus of polystyrene bead foams

✍ Scribed by J. A. Rinde; K. G. Hoge

Publisher: John Wiley and Sons
Year: 1972
Tongue: English
Weight: 305 KB
Volume: 16
Category: Article
ISSN: 0021-8995
DOI: 10.1002/app.1972.070160609

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✦ Synopsis

The shear storage modulus has been determined for 0.05, 0.10, and 0.22 g/cc polystyrene bead foams and for the full density polymer a t frequencies from 0.005 to 0.5 Hz a t temperatures from -5' to 84°C. These data are superposed to form master curves of log modulus versus log temperature-reduced frequency, using shift factors calculated by the Arrhenius equation. A plot of log modulus versus log density is linear for the three density foams; however, the modulus value for the solid polymer does not follow this relationship.

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