Crystalline microstructure and dielectric properties of oriented poly(ethylene-co-tetrafluoroethylene)

Yun Huang, Daniel F. Miranda, Ciprian Iacob, Shihai Zhang, James Runt

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

In the present investigation, we explore the influence of uniaxial orientation and subsequent thermal annealing on semi-crystalline poly(ethylene-tetrafluoroethylene) (ETFE) microstructure and dynamics, and the connection to dielectric breakdown strength. Understanding the influence of crystalline microstructure on dynamics and breakdown, and in turn how processing influences microstructure, is critical for establishing rational design of polymer dielectrics. When drawn below the glass transition temperature (Tg), the Weibull breakdown strength decreases compared to that of the undrawn precursor film, but increases on thermal annealing near or above Tg. This behavior is associated with the formation and elimination of drawing-induced microvoids, respectively. When drawn above Tg, the breakdown strength increases to ∼870 MV/cm, dominated by orientation of amorphous segments, and decreases on thermal annealing above Tg to near that of the undrawn film.

Original languageEnglish (US)
Pages (from-to)1-8
Number of pages8
JournalPolymer
Volume113
DOIs
StatePublished - Mar 24 2017

Fingerprint

Dielectric properties
Ethylene
Annealing
Crystalline materials
Microstructure
Electric breakdown
Crystal orientation
Polymers
Processing
Hot Temperature
ethylene
tetrafluoroethylene
Glass transition temperature
poly(ethylene-tetrafluoroethylene)

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

Cite this

Huang, Yun ; Miranda, Daniel F. ; Iacob, Ciprian ; Zhang, Shihai ; Runt, James. / Crystalline microstructure and dielectric properties of oriented poly(ethylene-co-tetrafluoroethylene). In: Polymer. 2017 ; Vol. 113. pp. 1-8.
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Crystalline microstructure and dielectric properties of oriented poly(ethylene-co-tetrafluoroethylene). / Huang, Yun; Miranda, Daniel F.; Iacob, Ciprian; Zhang, Shihai; Runt, James.

In: Polymer, Vol. 113, 24.03.2017, p. 1-8.

Research output: Contribution to journalArticle

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