Effects of methacrylate based amphiphilic block copolymer additives on ultra filtration PVDF membrane formation

Sang Hee Park; Yeojin Ahn; Munjeong Jang; Hyun Ji Kim; Kie Yong Cho; Seung Sang Hwang; Jung Hyun Lee; Kyung Youl Baek

doi:10.1016/j.seppur.2018.03.018

Effects of methacrylate based amphiphilic block copolymer additives on ultra filtration PVDF membrane formation

Sang Hee Park, Yeojin Ahn, Munjeong Jang, Hyun Ji Kim, Kie Yong Cho, Seung Sang Hwang, Jung Hyun Lee, Kyung Youl Baek

Research output: Contribution to journal › Article › peer-review

48 Citations (Scopus)

Abstract

Well-defined methacrylate based amphiphilic block copolymers (BCs) consisting of poly(methyl methacrylate) (PMMA) and poly(ethylene glycol) methacrylate (PPEGMA) were synthesized by atom transfer radical polymerization (ATRP) and used as additives in DMAc casting solution to fabricate poly(vinylidene fluoride) (PVDF) ultra-filtration (UF) membranes in non-solvent induced phase separation (NIPS) process, where the amphiphilic BC additives hydrophilically altered PVDF with PPEGMA block segment by strong interaction with the other PMMA block segment, which reduced water resistance to the PVDF polymer solution during phase separation. FT-IR and XPS studies showed carbonyl groups of BCs in the PVDF membranes, which were not changed even after IPA treatment, indicating that BCs in the membrane were very stable. Obtained PVDF membranes with BCs showed porous surface layer and finger-like pore structures with macrovoids on the sublayers, of which sizes were increased with the increase of BC contents, which were then compared to the pristine PVDF membranes and the PVDF membrane with corresponding other additives such as hydrophobic PMMA, hydrophilic PPEGMA, LiCl and BC/LiCl. Obtained PVDF membranes showed MWCO with 100 K PEO and the best water flux (140 LMH) was achieved in the PVDF membrane with BC/LiCl additive, which was almost 4 times higher than the pristine PVDF membrane. In addition, the PVDF membranes with BC and BC/LiCl additives improved the anti-fouling property for BSA protein, of which reversible fouling resistance ratio was ca. 7 times higher than that of the pristine PVDF membrane.

Original language	English
Pages (from-to)	34-44
Number of pages	11
Journal	Separation and Purification Technology
Volume	202
DOIs	https://doi.org/10.1016/j.seppur.2018.03.018
Publication status	Published - 2018 Aug 31

Bibliographical note

Funding Information:
This work was supported by the National Research Council of Science & Technology (NST) grant by the Korea government (MSIP) (No. CMP-16-04-KITECH) and partially supported by R&D Convergence Program of Ministry of Science, ICT and Future Planning, National Research Council of Science & Technology (No. CRC-14-1-KRICT).

Funding Information:
This work was supported by the National Research Council of Science & Technology (NST) grant by the Korea government (MSIP) (No. CMP-16-04-KITECH ) and partially supported by R&D Convergence Program of Ministry of Science, ICT and Future Planning, National Research Council of Science & Technology (No. CRC-14-1-KRICT ). Appendix A

Publisher Copyright:
© 2018 Elsevier B.V.

Keywords

Amphiphilic block copolymer
Lithium chloride
Non-solvent induced phase separation
Poly(vinylidene fluoride)

ASJC Scopus subject areas

Analytical Chemistry
Filtration and Separation

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10.1016/j.seppur.2018.03.018

Cite this

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title = "Effects of methacrylate based amphiphilic block copolymer additives on ultra filtration PVDF membrane formation",

abstract = "Well-defined methacrylate based amphiphilic block copolymers (BCs) consisting of poly(methyl methacrylate) (PMMA) and poly(ethylene glycol) methacrylate (PPEGMA) were synthesized by atom transfer radical polymerization (ATRP) and used as additives in DMAc casting solution to fabricate poly(vinylidene fluoride) (PVDF) ultra-filtration (UF) membranes in non-solvent induced phase separation (NIPS) process, where the amphiphilic BC additives hydrophilically altered PVDF with PPEGMA block segment by strong interaction with the other PMMA block segment, which reduced water resistance to the PVDF polymer solution during phase separation. FT-IR and XPS studies showed carbonyl groups of BCs in the PVDF membranes, which were not changed even after IPA treatment, indicating that BCs in the membrane were very stable. Obtained PVDF membranes with BCs showed porous surface layer and finger-like pore structures with macrovoids on the sublayers, of which sizes were increased with the increase of BC contents, which were then compared to the pristine PVDF membranes and the PVDF membrane with corresponding other additives such as hydrophobic PMMA, hydrophilic PPEGMA, LiCl and BC/LiCl. Obtained PVDF membranes showed MWCO with 100 K PEO and the best water flux (140 LMH) was achieved in the PVDF membrane with BC/LiCl additive, which was almost 4 times higher than the pristine PVDF membrane. In addition, the PVDF membranes with BC and BC/LiCl additives improved the anti-fouling property for BSA protein, of which reversible fouling resistance ratio was ca. 7 times higher than that of the pristine PVDF membrane.",

keywords = "Amphiphilic block copolymer, Lithium chloride, Non-solvent induced phase separation, Poly(vinylidene fluoride)",

author = "Park, {Sang Hee} and Yeojin Ahn and Munjeong Jang and Kim, {Hyun Ji} and Cho, {Kie Yong} and Hwang, {Seung Sang} and Lee, {Jung Hyun} and Baek, {Kyung Youl}",

note = "Funding Information: This work was supported by the National Research Council of Science & Technology (NST) grant by the Korea government (MSIP) (No. CMP-16-04-KITECH) and partially supported by R&D Convergence Program of Ministry of Science, ICT and Future Planning, National Research Council of Science & Technology (No. CRC-14-1-KRICT). Funding Information: This work was supported by the National Research Council of Science & Technology (NST) grant by the Korea government (MSIP) (No. CMP-16-04-KITECH ) and partially supported by R&D Convergence Program of Ministry of Science, ICT and Future Planning, National Research Council of Science & Technology (No. CRC-14-1-KRICT ). Appendix A Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2018",

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doi = "10.1016/j.seppur.2018.03.018",

language = "English",

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T1 - Effects of methacrylate based amphiphilic block copolymer additives on ultra filtration PVDF membrane formation

AU - Park, Sang Hee

AU - Ahn, Yeojin

AU - Jang, Munjeong

AU - Kim, Hyun Ji

AU - Cho, Kie Yong

AU - Hwang, Seung Sang

AU - Lee, Jung Hyun

AU - Baek, Kyung Youl

N1 - Funding Information: This work was supported by the National Research Council of Science & Technology (NST) grant by the Korea government (MSIP) (No. CMP-16-04-KITECH) and partially supported by R&D Convergence Program of Ministry of Science, ICT and Future Planning, National Research Council of Science & Technology (No. CRC-14-1-KRICT). Funding Information: This work was supported by the National Research Council of Science & Technology (NST) grant by the Korea government (MSIP) (No. CMP-16-04-KITECH ) and partially supported by R&D Convergence Program of Ministry of Science, ICT and Future Planning, National Research Council of Science & Technology (No. CRC-14-1-KRICT ). Appendix A Publisher Copyright: © 2018 Elsevier B.V.

PY - 2018/8/31

Y1 - 2018/8/31

N2 - Well-defined methacrylate based amphiphilic block copolymers (BCs) consisting of poly(methyl methacrylate) (PMMA) and poly(ethylene glycol) methacrylate (PPEGMA) were synthesized by atom transfer radical polymerization (ATRP) and used as additives in DMAc casting solution to fabricate poly(vinylidene fluoride) (PVDF) ultra-filtration (UF) membranes in non-solvent induced phase separation (NIPS) process, where the amphiphilic BC additives hydrophilically altered PVDF with PPEGMA block segment by strong interaction with the other PMMA block segment, which reduced water resistance to the PVDF polymer solution during phase separation. FT-IR and XPS studies showed carbonyl groups of BCs in the PVDF membranes, which were not changed even after IPA treatment, indicating that BCs in the membrane were very stable. Obtained PVDF membranes with BCs showed porous surface layer and finger-like pore structures with macrovoids on the sublayers, of which sizes were increased with the increase of BC contents, which were then compared to the pristine PVDF membranes and the PVDF membrane with corresponding other additives such as hydrophobic PMMA, hydrophilic PPEGMA, LiCl and BC/LiCl. Obtained PVDF membranes showed MWCO with 100 K PEO and the best water flux (140 LMH) was achieved in the PVDF membrane with BC/LiCl additive, which was almost 4 times higher than the pristine PVDF membrane. In addition, the PVDF membranes with BC and BC/LiCl additives improved the anti-fouling property for BSA protein, of which reversible fouling resistance ratio was ca. 7 times higher than that of the pristine PVDF membrane.

AB - Well-defined methacrylate based amphiphilic block copolymers (BCs) consisting of poly(methyl methacrylate) (PMMA) and poly(ethylene glycol) methacrylate (PPEGMA) were synthesized by atom transfer radical polymerization (ATRP) and used as additives in DMAc casting solution to fabricate poly(vinylidene fluoride) (PVDF) ultra-filtration (UF) membranes in non-solvent induced phase separation (NIPS) process, where the amphiphilic BC additives hydrophilically altered PVDF with PPEGMA block segment by strong interaction with the other PMMA block segment, which reduced water resistance to the PVDF polymer solution during phase separation. FT-IR and XPS studies showed carbonyl groups of BCs in the PVDF membranes, which were not changed even after IPA treatment, indicating that BCs in the membrane were very stable. Obtained PVDF membranes with BCs showed porous surface layer and finger-like pore structures with macrovoids on the sublayers, of which sizes were increased with the increase of BC contents, which were then compared to the pristine PVDF membranes and the PVDF membrane with corresponding other additives such as hydrophobic PMMA, hydrophilic PPEGMA, LiCl and BC/LiCl. Obtained PVDF membranes showed MWCO with 100 K PEO and the best water flux (140 LMH) was achieved in the PVDF membrane with BC/LiCl additive, which was almost 4 times higher than the pristine PVDF membrane. In addition, the PVDF membranes with BC and BC/LiCl additives improved the anti-fouling property for BSA protein, of which reversible fouling resistance ratio was ca. 7 times higher than that of the pristine PVDF membrane.

KW - Amphiphilic block copolymer

KW - Lithium chloride

KW - Non-solvent induced phase separation

KW - Poly(vinylidene fluoride)

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SN - 1383-5866

VL - 202

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ER -

Effects of methacrylate based amphiphilic block copolymer additives on ultra filtration PVDF membrane formation

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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