Kim, JH Won, J Kang, YS 2024-01-21T06:44:58Z 2024-01-21T06:44:58Z 2021-09-02 2004-06-15 0887-6266 https://pubs.kist.re.kr/handle/201004/137481 pi-Complexes of silver salts with polystyrene (PS) were prepared and tested in the separation of propylene/propane mixtures. After the incorporation of silver ions into the PS matrix, both the pure propylene gas permeance of the membrane and its olefin selectivity with respect to the propylene/propane mixtures were remarkably higher than those of the pure PS membrane, demonstrating facilitated propylene transport through the solid-state membrane. The remarkable separation performance of the PS/silver salt membranes was attributable to the unusually high solubility of the silver salts in the PS matrix, which was possibly due to the formation of pi-complexes between the silver ion and aromatic C-C bond of PS. The coordination properties and dissolution behavior of the silver salts in PS were investigated with Fourier transform infrared, Fourier transform Raman, and X-ray photoelectron spectroscopy. The values for the intersegmental d-spacing, determined by wide-angle X-ray scattering, also showed that significant transient crosslinks arose between the PS chains when the silver salts were added to the PS matrix. (C) 2004 Wiley Periodicals, Inc. English WILEY X-RAY-SCATTERING POLYMER ELECTROLYTES POLY(PROPYLENE OXIDE) IONS SEPARATION PROPYLENE COORDINATION MECHANISMS ADSORPTION BEHAVIOR pi-complexes of polystyrene with silver salts and their use as facilitated olefin transport membranes Article 10.1002/polb.20106 1 JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, v.42, no.12, pp.2263 - 2269 JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS 42 12 2263 2269 scie scopus 000221769800008 2-s2.0-2942545965 Polymer Science Polymer Science Article X-RAY-SCATTERING POLYMER ELECTROLYTES POLY(PROPYLENE OXIDE) IONS SEPARATION PROPYLENE COORDINATION MECHANISMS ADSORPTION BEHAVIOR membranes facilitated transport polystyrene propylene silver