Abstract
Here, we report the covalent coupling of poly (styrene-co-maleic anhydride) onto γ-alumina to develop high-performance organic solvent nanofiltration (OSN) membranes. A high molecular weight (M w ) alternating copolymer of maleic anhydride (MA) and styrene (St) was synthesized and directly grafted to the γ-alumina membrane, while commercially available low M w random copolymers of St and MA were also investigated. We show that solute rejection and membrane permeability strongly depend on the nature of the applied copolymer. In particular, the M w of the copolymer applied is potentially the key for improving the membrane performance. When a high M w copolymer was applied, the grafted layer covered the surface of the membrane. This results in membranes with significantly improved rejection, while maintaining a high permeability. In contrast, we observed pore grafting by applying low M w copolymers, which resulted in membranes with slightly higher rejection and dramatically lower permeability compared to unmodified membrane. The best results were obtained by grafting γ-alumina with a high M w alternating copolymer. These membranes showed a solute rejection of 98% for Sudan Black B (457 g mol −1 ) in toluene, while the permeability remained high at 2.9 L m −2 h −1 bar −1 .
| Original language | English |
|---|---|
| Pages (from-to) | 298-306 |
| Journal | Journal of Membrane Science |
| Volume | 582 |
| DOIs | |
| Publication status | Published - 15 Jul 2019 |
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Keywords
- Alumina membrane
- Copolymer grafting
- Molecular separation
- Pore modification
- Surface modification
Cite this
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Molecular separation using poly (styrene-co-maleic anhydride) grafted to γ-alumina : Surface versus pore modification. / Amirilargani, Mohammad; Merlet, Renaud B.; Chu, Liangyong; Nijmeijer, Arian; Winnubst, Louis; de Smet, Louis C.P.M.; Sudhölter, Ernst J.R.
In: Journal of Membrane Science, Vol. 582, 15.07.2019, p. 298-306.Research output: Contribution to journal › Article › Academic › peer-review
TY - JOUR
T1 - Molecular separation using poly (styrene-co-maleic anhydride) grafted to γ-alumina
T2 - Surface versus pore modification
AU - Amirilargani, Mohammad
AU - Merlet, Renaud B.
AU - Chu, Liangyong
AU - Nijmeijer, Arian
AU - Winnubst, Louis
AU - de Smet, Louis C.P.M.
AU - Sudhölter, Ernst J.R.
PY - 2019/7/15
Y1 - 2019/7/15
N2 - Here, we report the covalent coupling of poly (styrene-co-maleic anhydride) onto γ-alumina to develop high-performance organic solvent nanofiltration (OSN) membranes. A high molecular weight (M w ) alternating copolymer of maleic anhydride (MA) and styrene (St) was synthesized and directly grafted to the γ-alumina membrane, while commercially available low M w random copolymers of St and MA were also investigated. We show that solute rejection and membrane permeability strongly depend on the nature of the applied copolymer. In particular, the M w of the copolymer applied is potentially the key for improving the membrane performance. When a high M w copolymer was applied, the grafted layer covered the surface of the membrane. This results in membranes with significantly improved rejection, while maintaining a high permeability. In contrast, we observed pore grafting by applying low M w copolymers, which resulted in membranes with slightly higher rejection and dramatically lower permeability compared to unmodified membrane. The best results were obtained by grafting γ-alumina with a high M w alternating copolymer. These membranes showed a solute rejection of 98% for Sudan Black B (457 g mol −1 ) in toluene, while the permeability remained high at 2.9 L m −2 h −1 bar −1 .
AB - Here, we report the covalent coupling of poly (styrene-co-maleic anhydride) onto γ-alumina to develop high-performance organic solvent nanofiltration (OSN) membranes. A high molecular weight (M w ) alternating copolymer of maleic anhydride (MA) and styrene (St) was synthesized and directly grafted to the γ-alumina membrane, while commercially available low M w random copolymers of St and MA were also investigated. We show that solute rejection and membrane permeability strongly depend on the nature of the applied copolymer. In particular, the M w of the copolymer applied is potentially the key for improving the membrane performance. When a high M w copolymer was applied, the grafted layer covered the surface of the membrane. This results in membranes with significantly improved rejection, while maintaining a high permeability. In contrast, we observed pore grafting by applying low M w copolymers, which resulted in membranes with slightly higher rejection and dramatically lower permeability compared to unmodified membrane. The best results were obtained by grafting γ-alumina with a high M w alternating copolymer. These membranes showed a solute rejection of 98% for Sudan Black B (457 g mol −1 ) in toluene, while the permeability remained high at 2.9 L m −2 h −1 bar −1 .
KW - Alumina membrane
KW - Copolymer grafting
KW - Molecular separation
KW - Pore modification
KW - Surface modification
U2 - 10.1016/j.memsci.2019.04.013
DO - 10.1016/j.memsci.2019.04.013
M3 - Article
VL - 582
SP - 298
EP - 306
JO - Journal of Membrane Science
JF - Journal of Membrane Science
SN - 0376-7388
ER -