Separation Mechanisms and Anti-Fouling Properties of a Microporous Polyvinylidene Fluoride–Polyacrylic Acid–Graphene Oxide (PVDF-PAA-GO) Composite Membrane with Salt and Protein Solutions
This research demonstrates the preparation of composite membranes containing graphene oxide (GO) and investigates the separation mechanisms of various salts and bovine serum albumin (BSA) solutions. A microporous polyvinylidene fluoride–polyacrylic acid–GO (PVDF-PAA-GO) separation layer was fabricat...
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MDPI AG
2022-12-01
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| Series: | Membranes |
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| Online Access: | https://www.mdpi.com/2077-0375/13/1/40 |
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| author | Li-Ting Wang Yu-Han Chen Wei-Ting Chang Selvaraj Rajesh Kumar Chien-Chang Chen Shingjiang Jessie Lue |
| author_facet | Li-Ting Wang Yu-Han Chen Wei-Ting Chang Selvaraj Rajesh Kumar Chien-Chang Chen Shingjiang Jessie Lue |
| author_sort | Li-Ting Wang |
| collection | DOAJ |
| description | This research demonstrates the preparation of composite membranes containing graphene oxide (GO) and investigates the separation mechanisms of various salts and bovine serum albumin (BSA) solutions. A microporous polyvinylidene fluoride–polyacrylic acid–GO (PVDF-PAA-GO) separation layer was fabricated on non-woven support. The GO-incorporating composite resulted in enlarged pore size (0.16 μm) compared with the control membrane (0.12 μm). The zeta potential of the GO composite was reduced to –31 from –19 mV. The resulting membranes with and without GO were examined for water permeability and rejection efficiency with single salt and BSA solutions. Using the non-woven/PVDF-PAA composite, the permeance values were 88–190 kg/m<sup>2</sup>hMPa, and the salt rejection coefficients were 9–28% for Na<sub>2</sub>SO<sub>4</sub>, MgCl<sub>2</sub>, MgSO<sub>4</sub>, and NaCl solutions. These salt removals were based on the Donnan exclusion mechanism considering the ion radii and membrane pore size. Incorporating GO into the separation layer exhibited limited impacts on the filtration of salt solutions, but significantly reduced BSA membrane adhesion and increased permeance. The negatively charged protein reached almost complete removal (98.4%) from the highly negatively charged GO-containing membrane. The GO additive improved the anti-fouling property of the composite membrane and enhanced BSA separation from the salt solution. |
| first_indexed | 2024-03-09T11:44:37Z |
| format | Article |
| id | doaj.art-8ee520c6e94b46b189a5cc182905942c |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-09T11:44:37Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj.art-8ee520c6e94b46b189a5cc182905942c2023-11-30T23:26:23ZengMDPI AGMembranes2077-03752022-12-011314010.3390/membranes13010040Separation Mechanisms and Anti-Fouling Properties of a Microporous Polyvinylidene Fluoride–Polyacrylic Acid–Graphene Oxide (PVDF-PAA-GO) Composite Membrane with Salt and Protein SolutionsLi-Ting Wang0Yu-Han Chen1Wei-Ting Chang2Selvaraj Rajesh Kumar3Chien-Chang Chen4Shingjiang Jessie Lue5Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan City 333, TaiwanDepartment of Chemical and Materials Engineering, Chang Gung University, Taoyuan City 333, TaiwanDepartment of Chemical and Materials Engineering, Chang Gung University, Taoyuan City 333, TaiwanDepartment of Chemical and Materials Engineering, Chang Gung University, Taoyuan City 333, TaiwanDivision of Pediatric Gastroenterology and Hepatology, Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan 333, TaiwanDepartment of Chemical and Materials Engineering, Chang Gung University, Taoyuan City 333, TaiwanThis research demonstrates the preparation of composite membranes containing graphene oxide (GO) and investigates the separation mechanisms of various salts and bovine serum albumin (BSA) solutions. A microporous polyvinylidene fluoride–polyacrylic acid–GO (PVDF-PAA-GO) separation layer was fabricated on non-woven support. The GO-incorporating composite resulted in enlarged pore size (0.16 μm) compared with the control membrane (0.12 μm). The zeta potential of the GO composite was reduced to –31 from –19 mV. The resulting membranes with and without GO were examined for water permeability and rejection efficiency with single salt and BSA solutions. Using the non-woven/PVDF-PAA composite, the permeance values were 88–190 kg/m<sup>2</sup>hMPa, and the salt rejection coefficients were 9–28% for Na<sub>2</sub>SO<sub>4</sub>, MgCl<sub>2</sub>, MgSO<sub>4</sub>, and NaCl solutions. These salt removals were based on the Donnan exclusion mechanism considering the ion radii and membrane pore size. Incorporating GO into the separation layer exhibited limited impacts on the filtration of salt solutions, but significantly reduced BSA membrane adhesion and increased permeance. The negatively charged protein reached almost complete removal (98.4%) from the highly negatively charged GO-containing membrane. The GO additive improved the anti-fouling property of the composite membrane and enhanced BSA separation from the salt solution.https://www.mdpi.com/2077-0375/13/1/40polymer–graphene oxide compositemicroporous membraneprotein separationanti-fouling |
| spellingShingle | Li-Ting Wang Yu-Han Chen Wei-Ting Chang Selvaraj Rajesh Kumar Chien-Chang Chen Shingjiang Jessie Lue Separation Mechanisms and Anti-Fouling Properties of a Microporous Polyvinylidene Fluoride–Polyacrylic Acid–Graphene Oxide (PVDF-PAA-GO) Composite Membrane with Salt and Protein Solutions Membranes polymer–graphene oxide composite microporous membrane protein separation anti-fouling |
| title | Separation Mechanisms and Anti-Fouling Properties of a Microporous Polyvinylidene Fluoride–Polyacrylic Acid–Graphene Oxide (PVDF-PAA-GO) Composite Membrane with Salt and Protein Solutions |
| title_full | Separation Mechanisms and Anti-Fouling Properties of a Microporous Polyvinylidene Fluoride–Polyacrylic Acid–Graphene Oxide (PVDF-PAA-GO) Composite Membrane with Salt and Protein Solutions |
| title_fullStr | Separation Mechanisms and Anti-Fouling Properties of a Microporous Polyvinylidene Fluoride–Polyacrylic Acid–Graphene Oxide (PVDF-PAA-GO) Composite Membrane with Salt and Protein Solutions |
| title_full_unstemmed | Separation Mechanisms and Anti-Fouling Properties of a Microporous Polyvinylidene Fluoride–Polyacrylic Acid–Graphene Oxide (PVDF-PAA-GO) Composite Membrane with Salt and Protein Solutions |
| title_short | Separation Mechanisms and Anti-Fouling Properties of a Microporous Polyvinylidene Fluoride–Polyacrylic Acid–Graphene Oxide (PVDF-PAA-GO) Composite Membrane with Salt and Protein Solutions |
| title_sort | separation mechanisms and anti fouling properties of a microporous polyvinylidene fluoride polyacrylic acid graphene oxide pvdf paa go composite membrane with salt and protein solutions |
| topic | polymer–graphene oxide composite microporous membrane protein separation anti-fouling |
| url | https://www.mdpi.com/2077-0375/13/1/40 |
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