Abstract
A novel method for producing carbon membranes for ultrafiltration applications is presented using a spray deposition and pyrolysis of poly(furfuryl alcohol)/poly(ethylene glycol) mixtures on macroporous stainless steel supports. The poly(ethylene glycol) or PEG employed as a carbonization template creates a mesoporosity that leads to pores in the ultrafiltration range. Scanning electron microscopy (SEM) shows that the membranes consisted of 12- to 15-μm thick carbon films. Gas permeation and water permeability data were used for the calculation of mean pore sizes, which were found to decrease with decreasing average molecular weight of the PEG template. Ultrafiltration of a polydisperse dextran solution was used to quantify the retention properties of the membranes. Molecular weight cutoffs determined from dextran retention data were shown to vary with template molecular weight: values of 2 × 104, 3.5 × 104, and 6 × 104 g mol-1 dextran were measured for respective templates of 2000, 3400, and 8000 g mol-1 PEG. For PEG molecular weights of 2000 or below, the templating effect was ill defined, membrane film cracking became more prominent, and membrane selectivity and reproducibility were adversely affected.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 173-186 |
| Number of pages | 14 |
| Journal | Journal of Membrane Science |
| Volume | 198 |
| Issue number | 2 |
| DOIs | |
| State | Published - Apr 15 2002 |
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All Science Journal Classification (ASJC) codes
- Biochemistry
- Materials Science(all)
- Physical and Theoretical Chemistry
- Filtration and Separation
Cite this
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Ultrafiltration membrane synthesis by nanoscale templating of porous carbon. / Strano, Michael S.; Zydney, Andrew; Barth, Howard; Wooler, Gilber; Agarwal, Hans; Foley, Henry C.
In: Journal of Membrane Science, Vol. 198, No. 2, 15.04.2002, p. 173-186.Research output: Contribution to journal › Article
TY - JOUR
T1 - Ultrafiltration membrane synthesis by nanoscale templating of porous carbon
AU - Strano, Michael S.
AU - Zydney, Andrew
AU - Barth, Howard
AU - Wooler, Gilber
AU - Agarwal, Hans
AU - Foley, Henry C.
PY - 2002/4/15
Y1 - 2002/4/15
N2 - A novel method for producing carbon membranes for ultrafiltration applications is presented using a spray deposition and pyrolysis of poly(furfuryl alcohol)/poly(ethylene glycol) mixtures on macroporous stainless steel supports. The poly(ethylene glycol) or PEG employed as a carbonization template creates a mesoporosity that leads to pores in the ultrafiltration range. Scanning electron microscopy (SEM) shows that the membranes consisted of 12- to 15-μm thick carbon films. Gas permeation and water permeability data were used for the calculation of mean pore sizes, which were found to decrease with decreasing average molecular weight of the PEG template. Ultrafiltration of a polydisperse dextran solution was used to quantify the retention properties of the membranes. Molecular weight cutoffs determined from dextran retention data were shown to vary with template molecular weight: values of 2 × 104, 3.5 × 104, and 6 × 104 g mol-1 dextran were measured for respective templates of 2000, 3400, and 8000 g mol-1 PEG. For PEG molecular weights of 2000 or below, the templating effect was ill defined, membrane film cracking became more prominent, and membrane selectivity and reproducibility were adversely affected.
AB - A novel method for producing carbon membranes for ultrafiltration applications is presented using a spray deposition and pyrolysis of poly(furfuryl alcohol)/poly(ethylene glycol) mixtures on macroporous stainless steel supports. The poly(ethylene glycol) or PEG employed as a carbonization template creates a mesoporosity that leads to pores in the ultrafiltration range. Scanning electron microscopy (SEM) shows that the membranes consisted of 12- to 15-μm thick carbon films. Gas permeation and water permeability data were used for the calculation of mean pore sizes, which were found to decrease with decreasing average molecular weight of the PEG template. Ultrafiltration of a polydisperse dextran solution was used to quantify the retention properties of the membranes. Molecular weight cutoffs determined from dextran retention data were shown to vary with template molecular weight: values of 2 × 104, 3.5 × 104, and 6 × 104 g mol-1 dextran were measured for respective templates of 2000, 3400, and 8000 g mol-1 PEG. For PEG molecular weights of 2000 or below, the templating effect was ill defined, membrane film cracking became more prominent, and membrane selectivity and reproducibility were adversely affected.
UR - http://www.scopus.com/inward/record.url?scp=0037089725&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0037089725&partnerID=8YFLogxK
U2 - 10.1016/S0376-7388(01)00574-9
DO - 10.1016/S0376-7388(01)00574-9
M3 - Article
AN - SCOPUS:0037089725
VL - 198
SP - 173
EP - 186
JO - Journal of Membrane Science
JF - Journal of Membrane Science
SN - 0376-7388
IS - 2
ER -