With the new metallocene catalyst technology, ethylene copoly mers of unprecedented lower densities are being introduced rapidly. Since these very low density polyolefins offer interesting mechanical properties, a systematic investigation into their thermal and mechanical properties was made. It was found, for example, that despite the low densities achieved, wide compositional variations existed between materials. A comparison was also made between the thermal mechanical properties with optical properties, with the conclusion that compositional homogeneities are required for good optical properties.
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References
1.
Bouton, T.Private communications.
2.
Wundelich, B.1973. Macromolecular Physics. New York: Academic Press, 1:388.
3.
Flory, P.J.1949. J. Chem. Phys., 17:223.
4.
Wild, L., et al. 1982. J. Poly. Sci. P. Physics Ed., 20:441.
5.
Mirabella, F. and S. Westphal.1988. J. Poly. Sci. Part B, P. Physics, 26:1995.
6.
Usami, T. et al. 1986. Macromolecules, 19:2722.
7.
Ward, I.M.1983. Mechanical Properties of Solid Polymers, 2nd Ed., New York: John Wiley and Sons.
8.
McCrum, N.G., B.E. Read and G. Williams.1967. Anelastic and Dielectric Effects in Polymeric Solids, New York: J. Wiley , p. 366.
