Formation of microporous Teflon® PFA membranes via thermally induced phase separation

Michael Caplan, Chung Yuan Chiang, Douglas R. Lloyd, Larry Y. Yen

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

Poly(tetrafluoroethylene-co-perfluoro-(propyl vinyl ether)) (Teflon® PFA) membranes of a variety of structures have been produced through thermally induced phase separation of Teflon® PFA-chlorotrifluoroethylene melt-blends of different compositions. A phase diagram of the two component system was constructed, and electron microscopy was used to characterize the structures of membranes produced. The morphological characteristics of the Teflon® PFA membranes have been explained on the basis of equilibrium driving forces for liquid-liquid and solid-liquid phase separations.

Original languageEnglish (US)
Pages (from-to)219-237
Number of pages19
JournalJournal of Membrane Science
Volume130
Issue number1-2
DOIs
StatePublished - Jul 23 1997
Externally publishedYes

Fingerprint

teflon (trademark)
Polytetrafluoroethylene
Polytetrafluoroethylenes
Phase separation
membranes
Membranes
Liquids
polytetrafluoroethylene
liquids
Electron microscopy
Phase diagrams
ethers
electron microscopy
Electron Microscopy
liquid phases
phase diagrams
Ethers
Chemical analysis

Keywords

  • Formation
  • Microporous membranes
  • Phase separation
  • Teflon® PFA

ASJC Scopus subject areas

  • Filtration and Separation
  • Polymers and Plastics

Cite this

Formation of microporous Teflon® PFA membranes via thermally induced phase separation. / Caplan, Michael; Chiang, Chung Yuan; Lloyd, Douglas R.; Yen, Larry Y.

In: Journal of Membrane Science, Vol. 130, No. 1-2, 23.07.1997, p. 219-237.

Research output: Contribution to journalArticle

Caplan, Michael ; Chiang, Chung Yuan ; Lloyd, Douglas R. ; Yen, Larry Y. / Formation of microporous Teflon® PFA membranes via thermally induced phase separation. In: Journal of Membrane Science. 1997 ; Vol. 130, No. 1-2. pp. 219-237.
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