Abstract
The thermally stimulated depolarization currents (TSDC) spectrum of the poly( trans 1-octenylene) has been analysed by means of the thermal sampling technique over the 150–320 K temperature range. Three relaxation zones are defined. In the first zone, up to some degrees above T g ( ⋍208 K ) the relaxation is mainly dipolar, associated with motions in the amorphous phase, and the analysis reveals dipole-dipole interactions. In the second zone, above T g the relaxation takes place in the crystalline-amorphous interface. In the third zone, a relaxation at the crystalline phase is identified in the high temperature region. In addition, a shoulder localized in a narrow temperature interval (220–240 K) of the TSDC spectrum between the first and second zones is observed. It was found to be correlated with a change in the slope of the microhardness (Vickers) vs. T plot. This suggests a relation between the anomalous relaxation and the motion of the polymer chains bound to the crystalline-amorphous interface.
Published Version
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