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Morphology Development, Structure and Dielectric Properties of Biaxially Oriented Polypropylene

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review


Original languageEnglish
Title of host publication25th Nordic Insulation Symposium on Materials, Components and Diagnostics
Number of pages6
Publication statusPublished - 18 Jun 2017
Publication typeA4 Article in a conference publication
EventNordic Insulation Symposium -
Duration: 1 Jan 1900 → …

Publication series

NameProceeding of the Nordic Insulation Symposium
ISSN (Electronic)2535-3969


ConferenceNordic Insulation Symposium
Period1/01/00 → …


This paper outlines our recent study on effects of cast film extrusion and biaxial orientation on the morphological development and dielectric performance of biaxially oriented polypropylene (PP) films based on two capacitor-grade isotactic PP (iPP) raw materials. Results on polymorphic composition, melting behavior, microstructure and dielectric properties are reported. Morphological development during film manufacturing is found to have a profound effect on film structure and dielectric characteristics. Formation of structural defects was traced back to β→α crystal transformation upon biaxial stretching.

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