Molecular separation using poly (styrene-co-maleic anhydride) grafted to γ-alumina

Surface versus pore modification

Mohammad Amirilargani*, Renaud B. Merlet, Liangyong Chu, Arian Nijmeijer, Louis Winnubst, Louis C.P.M. de Smet, Ernst J.R. Sudhölter

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

1 Citation (Scopus)

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 languageEnglish
Pages (from-to)298-306
JournalJournal of Membrane Science
Volume582
DOIs
Publication statusPublished - 15 Jul 2019

Fingerprint

Aluminum Oxide
Maleic anhydride
anhydrides
Styrene
polystyrene
Alumina
aluminum oxides
Copolymers
membranes
Membranes
porosity
copolymers
rejection
Permeability
permeability
styrenes
solutes
Nanofiltration membranes
Sudan
poly(styrene-co-maleic anhydride)

Keywords

  • Alumina membrane
  • Copolymer grafting
  • Molecular separation
  • Pore modification
  • Surface modification

Cite this

Amirilargani, Mohammad ; Merlet, Renaud B. ; Chu, Liangyong ; Nijmeijer, Arian ; Winnubst, Louis ; de Smet, Louis C.P.M. ; Sudhölter, Ernst J.R. / Molecular separation using poly (styrene-co-maleic anhydride) grafted to γ-alumina : Surface versus pore modification. In: Journal of Membrane Science. 2019 ; Vol. 582. pp. 298-306.
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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 .",
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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 journalArticleAcademicpeer-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

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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 .

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