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Maggay IV, Liao TY, Venault A, Lin HT, Chao CC, Wei TC, Chang Y. Leveraging the Dielectric Barrier Discharge Plasma Process to Create Regenerative Biocidal ePTFE Membranes. ACS APPLIED MATERIALS & INTERFACES 2023; 15:48001-48014. [PMID: 37787514 DOI: 10.1021/acsami.3c10800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
The utilization of dielectric barrier discharge (DBD) plasma treatment for modifying substrate surfaces constitutes an easy and simple approach with a potential for diverse applications. This technique was used to modify the surface of a commercial porous expanded poly(tetrafluoroethylene) (ePTFE) film with either dimethylaminoethyl methacrylate (DMAEMA) or (trimethylamino)ethyl methacrylate chloride (TMAEMA) monomers, aiming to obtain antibacterial ePTFE. Physicochemical analyses of the membranes revealed that DBD successfully enhanced the surface energy and surface charge of the membranes while maintaining high porosity (>75%) and large pore size (>1.0 μm). Evaluation of the bacteria killing-releasing (K-R) function revealed that both DMAEMA and TMAEMA endowed ePTFE with the ability to kill Escherichia coli bacteria. However, only TMAEMA-grafted ePTFE allowed for the release of dead bacteria from the surface upon washing with sodium hexametaphosphate (SHMP) saline solution, owing to its cationic charge derived from the quaternary amine. Washing with SHMP disturbed the electrostatic force between the polymer brushes and dead bacteria, which caused the release of the dead bacteria. Lastly, dead-end bacteria filtration showed that the TMAEMA-grafted ePTFE was able to kill 99.78% of the bacteria, while approximately 61.55% of bacteria were killed upon contact. The present findings support the feasibility of using DBD plasma treatment for designing surfaces that target bacteria and aid in the containment of disease-causing pathogens.
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Affiliation(s)
- Irish Valerie Maggay
- R&D Center for Membrane Technology and Department of Chemical Engineering, Chung Yuan Christian University, Chungli 32023, Taiwan, R.O.C
| | - Ting-Yu Liao
- R&D Center for Membrane Technology and Department of Chemical Engineering, Chung Yuan Christian University, Chungli 32023, Taiwan, R.O.C
| | - Antoine Venault
- R&D Center for Membrane Technology and Department of Chemical Engineering, Chung Yuan Christian University, Chungli 32023, Taiwan, R.O.C
| | - Hao-Tung Lin
- R&D Center for Membrane Technology and Department of Chemical Engineering, Chung Yuan Christian University, Chungli 32023, Taiwan, R.O.C
| | - Chih-Cheng Chao
- Tasheh Biotec Co., LTD, 226, Yuan-Pei Street, Hsinchu City 300, Taiwan, R.O.C
| | - Ta-Chin Wei
- R&D Center for Membrane Technology and Department of Chemical Engineering, Chung Yuan Christian University, Chungli 32023, Taiwan, R.O.C
| | - Yung Chang
- R&D Center for Membrane Technology and Department of Chemical Engineering, Chung Yuan Christian University, Chungli 32023, Taiwan, R.O.C
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Akamatsu K, Shida T, Ochiai A, Fukase R, Ohashi H, Nakao SI, Wang XL. Low-Fouling Polyvinylidene Fluoride Microfiltration Membranes Produced by Grafting Carboxybetaine Polymers by Atom Transfer Radical Polymerization and Activator Generated by Electron Transfer–Atom Transfer Radical Polymerization. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c02757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kazuki Akamatsu
- Department of Environmental Chemistry and Chemical Engineering, School of Advanced Engineering, Kogakuin University, 2665-1 Nakano-machi, Hachioji-shi 192-0015, Tokyo, Japan
| | - Taisei Shida
- Department of Environmental Chemistry and Chemical Engineering, School of Advanced Engineering, Kogakuin University, 2665-1 Nakano-machi, Hachioji-shi 192-0015, Tokyo, Japan
| | - Ayaka Ochiai
- Department of Environmental Chemistry and Chemical Engineering, School of Advanced Engineering, Kogakuin University, 2665-1 Nakano-machi, Hachioji-shi 192-0015, Tokyo, Japan
| | - Ryo Fukase
- Department of Environmental Chemistry and Chemical Engineering, School of Advanced Engineering, Kogakuin University, 2665-1 Nakano-machi, Hachioji-shi 192-0015, Tokyo, Japan
| | - Hidenori Ohashi
- Department of Chemical Engineering, Faculty of Engineering, Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Koganei 184-8588, Tokyo, Japan
| | - Shin-ichi Nakao
- Department of Environmental Chemistry and Chemical Engineering, School of Advanced Engineering, Kogakuin University, 2665-1 Nakano-machi, Hachioji-shi 192-0015, Tokyo, Japan
| | - Xiao-lin Wang
- Department of Environmental Chemistry and Chemical Engineering, School of Advanced Engineering, Kogakuin University, 2665-1 Nakano-machi, Hachioji-shi 192-0015, Tokyo, Japan
- Department of Chemical Engineering, Tsinghua University, Beijing 100084, People’s Republic of China
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