Polysulfone hollow fiber gas separation membranes filled with sub-micron particles

Vinay Bhardwaj, A Macintosh, Iain Sharpe, Sergey Gordeyev, Simon Shilton

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Three different fillers, carbon black (CB), vapor grown carbon fibers (VGCF), and TiO2, were incorporated into polysulfone spinning solutions with the intention of producing highly selective membranes with enhanced mechanical strength. The effect of filler presence on gas permeation characteristics, mechanical strength (bursting pressure), and morphology was investigated and compared to unfilled membranes. As well as studying filler types, the influence of CB filler concentration on membrane performance was also examined. For all filler types (at a concentration of 5%w/w), the pressure-normalized flux of O2, N2, and CH4 was greater in the composite than in the unfilled membranes. The CO2 pressure-normalized flux was only greater in the TiO2 composite membranes. For CB and VGCF, the CO2 pressure-normalized flux was reduced compared with unfilled membranes. Three CB concentrations were investigated (2, 5, and 10%w/w). For O2, N2, and CH4, pressure-normalized flux peaked at 5%w/w CB. CO2 exhibited the opposite trend, showing a minimum pressure-normalized flux at 5%w/w. Considering O2/N2 and CO2/CH4 gas pairs and the various filled membrane categories, only the O2/N2 selectivity of the 2%w/w CB filled membranes was higher than that of the unfilled fibers—all other selectivities were lower. In terms of CB concentration, selectivity was a minimum at the intermediate concentration of 5%w/w. All the filled membrane types exhibited greater mechanical strength (bursting pressure) than unfilled fibers apart from the 5%w/w VGCF composites. The 2%w/w CB composites were the strongest. Electron microscopy showed no visible differences in general morphology between the various filled and unfilled membranes.
LanguageEnglish
Pages318-328
Number of pages11
JournalAnnals of the New York Academy of Sciences
Volume984
DOIs
Publication statusPublished - 2003

Fingerprint

Soot
Gases
Membranes
Fibers
Fillers
Pressure
Fluxes
Strength of materials
Vapors
Composite materials
polysulfone P 1700
Gas
Fiber
Membrane
Particle
Composite membranes
Black Carbon
Permeation
Electron microscopy
Electron Microscopy

Keywords

  • gas separation membranes
  • sub-micron particles
  • vapor grown carbon fibers

Cite this

Bhardwaj, Vinay ; Macintosh, A ; Sharpe, Iain ; Gordeyev, Sergey ; Shilton, Simon. / Polysulfone hollow fiber gas separation membranes filled with sub-micron particles. In: Annals of the New York Academy of Sciences. 2003 ; Vol. 984. pp. 318-328.
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abstract = "Three different fillers, carbon black (CB), vapor grown carbon fibers (VGCF), and TiO2, were incorporated into polysulfone spinning solutions with the intention of producing highly selective membranes with enhanced mechanical strength. The effect of filler presence on gas permeation characteristics, mechanical strength (bursting pressure), and morphology was investigated and compared to unfilled membranes. As well as studying filler types, the influence of CB filler concentration on membrane performance was also examined. For all filler types (at a concentration of 5{\%}w/w), the pressure-normalized flux of O2, N2, and CH4 was greater in the composite than in the unfilled membranes. The CO2 pressure-normalized flux was only greater in the TiO2 composite membranes. For CB and VGCF, the CO2 pressure-normalized flux was reduced compared with unfilled membranes. Three CB concentrations were investigated (2, 5, and 10{\%}w/w). For O2, N2, and CH4, pressure-normalized flux peaked at 5{\%}w/w CB. CO2 exhibited the opposite trend, showing a minimum pressure-normalized flux at 5{\%}w/w. Considering O2/N2 and CO2/CH4 gas pairs and the various filled membrane categories, only the O2/N2 selectivity of the 2{\%}w/w CB filled membranes was higher than that of the unfilled fibers—all other selectivities were lower. In terms of CB concentration, selectivity was a minimum at the intermediate concentration of 5{\%}w/w. All the filled membrane types exhibited greater mechanical strength (bursting pressure) than unfilled fibers apart from the 5{\%}w/w VGCF composites. The 2{\%}w/w CB composites were the strongest. Electron microscopy showed no visible differences in general morphology between the various filled and unfilled membranes.",
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Polysulfone hollow fiber gas separation membranes filled with sub-micron particles. / Bhardwaj, Vinay; Macintosh, A; Sharpe, Iain; Gordeyev, Sergey; Shilton, Simon.

In: Annals of the New York Academy of Sciences, Vol. 984, 2003, p. 318-328.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Polysulfone hollow fiber gas separation membranes filled with sub-micron particles

AU - Bhardwaj, Vinay

AU - Macintosh, A

AU - Sharpe, Iain

AU - Gordeyev, Sergey

AU - Shilton, Simon

PY - 2003

Y1 - 2003

N2 - Three different fillers, carbon black (CB), vapor grown carbon fibers (VGCF), and TiO2, were incorporated into polysulfone spinning solutions with the intention of producing highly selective membranes with enhanced mechanical strength. The effect of filler presence on gas permeation characteristics, mechanical strength (bursting pressure), and morphology was investigated and compared to unfilled membranes. As well as studying filler types, the influence of CB filler concentration on membrane performance was also examined. For all filler types (at a concentration of 5%w/w), the pressure-normalized flux of O2, N2, and CH4 was greater in the composite than in the unfilled membranes. The CO2 pressure-normalized flux was only greater in the TiO2 composite membranes. For CB and VGCF, the CO2 pressure-normalized flux was reduced compared with unfilled membranes. Three CB concentrations were investigated (2, 5, and 10%w/w). For O2, N2, and CH4, pressure-normalized flux peaked at 5%w/w CB. CO2 exhibited the opposite trend, showing a minimum pressure-normalized flux at 5%w/w. Considering O2/N2 and CO2/CH4 gas pairs and the various filled membrane categories, only the O2/N2 selectivity of the 2%w/w CB filled membranes was higher than that of the unfilled fibers—all other selectivities were lower. In terms of CB concentration, selectivity was a minimum at the intermediate concentration of 5%w/w. All the filled membrane types exhibited greater mechanical strength (bursting pressure) than unfilled fibers apart from the 5%w/w VGCF composites. The 2%w/w CB composites were the strongest. Electron microscopy showed no visible differences in general morphology between the various filled and unfilled membranes.

AB - Three different fillers, carbon black (CB), vapor grown carbon fibers (VGCF), and TiO2, were incorporated into polysulfone spinning solutions with the intention of producing highly selective membranes with enhanced mechanical strength. The effect of filler presence on gas permeation characteristics, mechanical strength (bursting pressure), and morphology was investigated and compared to unfilled membranes. As well as studying filler types, the influence of CB filler concentration on membrane performance was also examined. For all filler types (at a concentration of 5%w/w), the pressure-normalized flux of O2, N2, and CH4 was greater in the composite than in the unfilled membranes. The CO2 pressure-normalized flux was only greater in the TiO2 composite membranes. For CB and VGCF, the CO2 pressure-normalized flux was reduced compared with unfilled membranes. Three CB concentrations were investigated (2, 5, and 10%w/w). For O2, N2, and CH4, pressure-normalized flux peaked at 5%w/w CB. CO2 exhibited the opposite trend, showing a minimum pressure-normalized flux at 5%w/w. Considering O2/N2 and CO2/CH4 gas pairs and the various filled membrane categories, only the O2/N2 selectivity of the 2%w/w CB filled membranes was higher than that of the unfilled fibers—all other selectivities were lower. In terms of CB concentration, selectivity was a minimum at the intermediate concentration of 5%w/w. All the filled membrane types exhibited greater mechanical strength (bursting pressure) than unfilled fibers apart from the 5%w/w VGCF composites. The 2%w/w CB composites were the strongest. Electron microscopy showed no visible differences in general morphology between the various filled and unfilled membranes.

KW - gas separation membranes

KW - sub-micron particles

KW - vapor grown carbon fibers

U2 - 10.1111/j.1749-6632.2003.tb06009.x

DO - 10.1111/j.1749-6632.2003.tb06009.x

M3 - Article

VL - 984

SP - 318

EP - 328

JO - Annals of the New York Academy of Sciences

T2 - Annals of the New York Academy of Sciences

JF - Annals of the New York Academy of Sciences

SN - 0077-8923

ER -