Exploring the potential of fluorinated polyurethane membranes in hydrocarbon separation

Somaye Nilouyal, Ali Pournaghshband Isfahani, H. Enis Karahan, Ansori Muchtar, Ikumi Joko, Habib Al-Aziz, Detao Qin, Masateru M. Ito, Easan Sivaniah*, Behnam Ghalei

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

We designed a range of fluorinated polyurethanes (FPUs) to overcome gas-induced plasticization limitations in hydrocarbon separation membranes. Incorporating fluorinated groups in the polyol or chain extender restricted chain mobility and influenced phase behavior. Fluorolink® E10-H, a fluorinated polyol, significantly improved the mechanical properties of FPUs. All FPUs with Fluorolink® exhibited over four times higher propane permeability, though with decreased propane/methane selectivity. Notably, our mechanically hardest FPU remained stable during continuous propane exposure, demonstrating resistance to plasticization. These findings highlight the potential of fluorination in designing PU membranes that resist gas-induced plasticization for efficient condensable gas separation.

Original languageEnglish
Article number135653
JournalMaterials Letters
Volume357
DOIs
Publication statusPublished - 15 Feb 2024

Bibliographical note

Publisher Copyright:
© 2023 Elsevier B.V.

Keywords

  • Chain mobility
  • Fuoropolymer
  • Hydrocarbon separation
  • plasticization
  • Stability

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