:: Advanced Composites Letters on-line ABSTRACTS ::

Volume 10, Issue 2, 2001

THE EFFECT OF TRANSCRYSTALLINE INTERFACE ON THE MECHANICAL PROPERTIES OF POLYETHYLENE /POLYETHYLENE COMPOSITES

D. Levitus¹, S. Kenig¹, M. Kazanci², H. Harel² and G. Marom²

¹Department of Plastics Engineering, Shenkar College of Engineering & Design, 52526 Ramat Gan, Israel.

²Casali Institute of Applied Chemistry, The Hebrew University of Jerusalem, 91904 Jerusalem, Israel.

(Received 12/00; accepted 4/01)

ABSTRACT

The effect of the transcrystalline layer on the longitudinal properties of unidirectional polyethylene/polyethylene (PE/PE) composites was studied. Two sets of PE/PE composites were prepared by quenching and by isothermal crystallisation, respectively, using a wide range of fibre volume fractions. Quenching and isothermal crystallisation were expected, respectively, to prevent or to induce generation of a highly ordered transcrystalline layer. The experimental results showed that isothermal crystallisation produced a substantial positive effect on both the longitudinal strength and modulus, which was attributed to transcrystallinity.

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