Polysulfone mixed matrix gas separation hollow fibre membranes filled with polymer and carbon xerogels

Vitor Magueijo, Lynsey Anderson, Ashleigh Fletcher, Simon James Shilton

Research output: Contribution to journalArticle

  • 22 Citations

Abstract

This work involves the preparation, tensile testing and gas separation characterization of polysulfone mixed matrix hollow fibres filled with polymeric sol based, and subsequently carbonised, xerogels. The pore characteristics of the xerogels were determined using a surface area and porosity analyser. The xerogel materials were reduced to submicron particles by grinding and wet milling, and the resultant particle size was determined using dynamic light scattering. Using dry/wet forced convection spinning, mixed matrix hollow fibre membranes (MMMs) were spun from solutions of polysulfone loaded with the submicron xerogel particles. At 5% loading, all MMMs exhibited higher strain at break and higher strength than unfilled membranes. Compared to unfilled fibres, MMMs were stiffer when filled with hard xerogel inclusions but became more pliable when filled with soft xerogel particles. Knudsen diffusion becomes an important gas transport mechanism in the membranes filled with mesoporous xerogels. When compared to the unfilled hollow fibres, these membranes showed a strong increase in the permeation of low molecular weight, high kinetic diameter gases, leading to a decline in fast/slow gas selectivities. All types of MMM gave higher CO2/O2 (fast/fast) and CH4/N2 (slow/slow) selectivities than unfilled hollow fibres. The MMMs filled with a microporous xerogel gave a higher CO2 pressure normalized flux when compared to the unfilled fibres without sacrificing the CO2/CH4 selectivity. Future work should focus on the tailoring of the pore size of the xerogels and on the wet milling procedure to obtain smaller filler particles.
LanguageEnglish
Pages13-20
Number of pages8
JournalChemical Engineering Science
Volume92
DOIs
Publication statusPublished - 5 Apr 2013

Fingerprint

Xerogels
Polysulfones
Polymers
Carbon
Membrane
Gases
Fiber
Membranes
Fibers
Selectivity
polysulfone P 1700
Gas
Kinetic theory of gases
Forced Convection
Dynamic Light Scattering
Grinding
Tensile testing
Forced convection
Polymethyl Methacrylate
Dynamic light scattering

Keywords

  • polysulfone
  • mixed matrix
  • hollow fibre membranes
  • gas separation
  • polymer
  • carbon xerogels

Cite this

@article{ccc0b32538704c65b5acd9db6a3705f8,
title = "Polysulfone mixed matrix gas separation hollow fibre membranes filled with polymer and carbon xerogels",
abstract = "This work involves the preparation, tensile testing and gas separation characterization of polysulfone mixed matrix hollow fibres filled with polymeric sol based, and subsequently carbonised, xerogels. The pore characteristics of the xerogels were determined using a surface area and porosity analyser. The xerogel materials were reduced to submicron particles by grinding and wet milling, and the resultant particle size was determined using dynamic light scattering. Using dry/wet forced convection spinning, mixed matrix hollow fibre membranes (MMMs) were spun from solutions of polysulfone loaded with the submicron xerogel particles. At 5{\%} loading, all MMMs exhibited higher strain at break and higher strength than unfilled membranes. Compared to unfilled fibres, MMMs were stiffer when filled with hard xerogel inclusions but became more pliable when filled with soft xerogel particles. Knudsen diffusion becomes an important gas transport mechanism in the membranes filled with mesoporous xerogels. When compared to the unfilled hollow fibres, these membranes showed a strong increase in the permeation of low molecular weight, high kinetic diameter gases, leading to a decline in fast/slow gas selectivities. All types of MMM gave higher CO2/O2 (fast/fast) and CH4/N2 (slow/slow) selectivities than unfilled hollow fibres. The MMMs filled with a microporous xerogel gave a higher CO2 pressure normalized flux when compared to the unfilled fibres without sacrificing the CO2/CH4 selectivity. Future work should focus on the tailoring of the pore size of the xerogels and on the wet milling procedure to obtain smaller filler particles.",
keywords = "polysulfone, mixed matrix , hollow fibre membranes , gas separation, polymer , carbon xerogels",
author = "Vitor Magueijo and Lynsey Anderson and Ashleigh Fletcher and Shilton, {Simon James}",
year = "2013",
month = "4",
day = "5",
doi = "10.1016/j.ces.2013.01.043",
language = "English",
volume = "92",
pages = "13--20",
journal = "Chemical Engineering Science",
issn = "0009-2509",

}

Polysulfone mixed matrix gas separation hollow fibre membranes filled with polymer and carbon xerogels. / Magueijo, Vitor; Anderson, Lynsey; Fletcher, Ashleigh; Shilton, Simon James.

In: Chemical Engineering Science , Vol. 92, 05.04.2013, p. 13-20.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Polysulfone mixed matrix gas separation hollow fibre membranes filled with polymer and carbon xerogels

AU - Magueijo, Vitor

AU - Anderson, Lynsey

AU - Fletcher, Ashleigh

AU - Shilton, Simon James

PY - 2013/4/5

Y1 - 2013/4/5

N2 - This work involves the preparation, tensile testing and gas separation characterization of polysulfone mixed matrix hollow fibres filled with polymeric sol based, and subsequently carbonised, xerogels. The pore characteristics of the xerogels were determined using a surface area and porosity analyser. The xerogel materials were reduced to submicron particles by grinding and wet milling, and the resultant particle size was determined using dynamic light scattering. Using dry/wet forced convection spinning, mixed matrix hollow fibre membranes (MMMs) were spun from solutions of polysulfone loaded with the submicron xerogel particles. At 5% loading, all MMMs exhibited higher strain at break and higher strength than unfilled membranes. Compared to unfilled fibres, MMMs were stiffer when filled with hard xerogel inclusions but became more pliable when filled with soft xerogel particles. Knudsen diffusion becomes an important gas transport mechanism in the membranes filled with mesoporous xerogels. When compared to the unfilled hollow fibres, these membranes showed a strong increase in the permeation of low molecular weight, high kinetic diameter gases, leading to a decline in fast/slow gas selectivities. All types of MMM gave higher CO2/O2 (fast/fast) and CH4/N2 (slow/slow) selectivities than unfilled hollow fibres. The MMMs filled with a microporous xerogel gave a higher CO2 pressure normalized flux when compared to the unfilled fibres without sacrificing the CO2/CH4 selectivity. Future work should focus on the tailoring of the pore size of the xerogels and on the wet milling procedure to obtain smaller filler particles.

AB - This work involves the preparation, tensile testing and gas separation characterization of polysulfone mixed matrix hollow fibres filled with polymeric sol based, and subsequently carbonised, xerogels. The pore characteristics of the xerogels were determined using a surface area and porosity analyser. The xerogel materials were reduced to submicron particles by grinding and wet milling, and the resultant particle size was determined using dynamic light scattering. Using dry/wet forced convection spinning, mixed matrix hollow fibre membranes (MMMs) were spun from solutions of polysulfone loaded with the submicron xerogel particles. At 5% loading, all MMMs exhibited higher strain at break and higher strength than unfilled membranes. Compared to unfilled fibres, MMMs were stiffer when filled with hard xerogel inclusions but became more pliable when filled with soft xerogel particles. Knudsen diffusion becomes an important gas transport mechanism in the membranes filled with mesoporous xerogels. When compared to the unfilled hollow fibres, these membranes showed a strong increase in the permeation of low molecular weight, high kinetic diameter gases, leading to a decline in fast/slow gas selectivities. All types of MMM gave higher CO2/O2 (fast/fast) and CH4/N2 (slow/slow) selectivities than unfilled hollow fibres. The MMMs filled with a microporous xerogel gave a higher CO2 pressure normalized flux when compared to the unfilled fibres without sacrificing the CO2/CH4 selectivity. Future work should focus on the tailoring of the pore size of the xerogels and on the wet milling procedure to obtain smaller filler particles.

KW - polysulfone

KW - mixed matrix

KW - hollow fibre membranes

KW - gas separation

KW - polymer

KW - carbon xerogels

UR - http://www.sciencedirect.com/science/article/pii/S0009250913000560

U2 - 10.1016/j.ces.2013.01.043

DO - 10.1016/j.ces.2013.01.043

M3 - Article

VL - 92

SP - 13

EP - 20

JO - Chemical Engineering Science

T2 - Chemical Engineering Science

JF - Chemical Engineering Science

SN - 0009-2509

ER -