Structure and separation properties of π-complex membranes comprising poly(hexamethylenevinylene) and silver tetrafluoroborate

Jong Hak Kim, Byoung Ryul Min, Jongok Won, Yong Soo Kang

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Abstract

Polymer/silver-ion π-complex membranes consisting of poly(hexamethylenevinylene) (PHMV) and silver tetrafluoroborate exhibit unusually high separation performance for olefin/olefin and olefin/paraffin mixtures. The formation of π complexes between silver ions and unsaturated C=C bonds of PHMV has been confirmed with wide-angle X-ray scattering, differential scanning calorimetry, and X-ray photoelectron spectroscopy. Fourier transform infrared and ultraviolet spectroscopy studies have revealed that silver ions make π complexes with olefins such as 1,3-butadiene, propylene, and ethylene. Of these three olefins, 1,3-butadiene has the highest binding affinity with silver ions in dissolved in PHMV, and this results in its higher solubility and permeance. Therefore, the π-complex membranes exhibit unusually high separation performance for olefin/olefin and olefin/paraffin mixtures.

Original languageEnglish
Pages (from-to)1434-1441
Number of pages8
JournalJournal of Polymer Science, Part B: Polymer Physics
Volume44
Issue number10
DOIs
Publication statusPublished - 2006 May 15

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All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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