The dynamic mechanical behavior of ultra‐high modulus linear polyethylenes

The dynamic mechanical properties of a number of ultra‐highly drawn polyethylenes have been studied over a wide range of temperature. It is shown that the materials possess low temperature Young's moduli as high as 1.6 Mbar, a figure which approaches the theoretical and experimental values for the c ‐axis crystalline modulus of this polymer. The α and γ relaxation processes are still clearly discernible even at highest drawn ratios (ca. 35) and...