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Effect of Morphology on the dielectric properties of a segmented copolyester

✍ Scribed by S. Radhakrishnan; D.R. Saini; M.V. Kuber

Publisher: Elsevier Science
Year: 1991
Tongue: English
Weight: 554 KB
Volume: 27
Category: Article
ISSN: 0014-3057
DOI: 10.1016/0014-3057(91)90108-z

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✦ Synopsis

The dielectric relaxation has been investigated for a segmented copolyester film containing 76% hard segments (PBT) and 24% soft tetramethylene oxide segments grown under different conditions. Distinct features have been noted in the ct-and//-relaxations peaks of dielectric loss spectra depending on whether the samples were melt-grown or solution-cast. These differences have been attributed to the changes in morphology and chain configuration, especially the ---(CH2)4-4)---groups, caused by the preparative technique used.

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