Abstract
AbstractThe thermal and dynamic mechanical behavior of polarized low‐density polyethylene (LDPE) was investigated, by applying electric fields in the range of 5.37 to 31.7 MV/m, for 2.75 to 43.5 h. The polarization strongly affected DSC and DMA spectra, indicating that a new and more ordered phase is formed, which disappears gradually after the removal of the electrical field. A shift of −21.3°C was found in the DMTA spectra for the Tg of the polarized material, and no changes could be found in comparing the results of WAXS analyses of the original and treated materials. Very similar effects were observed with mechanical loading of the materials, leading to the conclusion that the amorphous phase of LDPE might be orienting under high electric fields in a similar manner. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 90: 3107–3114, 2003
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