Polydopamine-mediated superlyophobic polysiloxane coating of porous substrates for efficient separation of immiscible liquids
Lyophobic membrane has the potential to separate immiscible liquids. However, the multistep fabrication and limited option of materials have created major challenges for their practical application. Here, a strategy to fabricate superlyophobic materials is presented by using polydopamine (PDA) as an...
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sg-ntu-dr.10356-1547252022-01-05T06:43:22Z Polydopamine-mediated superlyophobic polysiloxane coating of porous substrates for efficient separation of immiscible liquids Mai, Van Cuong Lim, Desmond Xin An Das, Paramita Hou, Shuai Lim, Teik Thye Duan, Hongwei School of Chemical and Biomedical Engineering Nanyang Environment and Water Research Institute Engineering::Chemical engineering Membranes Polydopamine Lyophobic membrane has the potential to separate immiscible liquids. However, the multistep fabrication and limited option of materials have created major challenges for their practical application. Here, a strategy to fabricate superlyophobic materials is presented by using polydopamine (PDA) as an intermediate coating. The results demonstrate that PDA nanoparticles deposited on diverse substrates can direct the subsequent formation of polysiloxane microsheets (PSMSs), which increases surface roughness and results in superlyophobicity towards high surface tension (ST) liquids and superlyophilicity to liquids with ST of 33 mN m-1 and below. Superlyophobic membranes fabricated from stainless steel mesh, cotton fabric, and filter papers show high efficiency for continuous separations of chloroform/water (>96%) and carbon tetrachloride/formamide (>97%). In addition, superlyophobic melamine foam and polyurethane foam can absorb various low ST liquids with capacities ranging from 53 to 120 g g-1 and from 26.5 to 52.5 g g-1, respectively, revealing the efficient separation of a broad range of immiscible liquids. All of the as-prepared superlyophobic materials show excellent regeneration with insignificant change of separation efficiency over 10 cycles. The preparation route for superlyophobic materials in this work introduces a new strategy for the separation of immiscible liquids by both batch absorption and continuous filtration treatment. Nanyang Technological University This work was supported by College of Engineering at Nanyang Technological University. 2022-01-05T06:43:22Z 2022-01-05T06:43:22Z 2020 Journal Article Mai, V. C., Lim, D. X. A., Das, P., Hou, S., Lim, T. T. & Duan, H. (2020). Polydopamine-mediated superlyophobic polysiloxane coating of porous substrates for efficient separation of immiscible liquids. Advanced Materials Interfaces, 7(20), 2000428-. https://dx.doi.org/10.1002/admi.202000428 2196-7350 https://hdl.handle.net/10356/154725 10.1002/admi.202000428 2-s2.0-85089687854 20 7 2000428 en Advanced Materials Interfaces © 2020 Wiley-VCH GmbH. All rights reserved. |
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Engineering::Chemical engineering Membranes Polydopamine Mai, Van Cuong Lim, Desmond Xin An Das, Paramita Hou, Shuai Lim, Teik Thye Duan, Hongwei Polydopamine-mediated superlyophobic polysiloxane coating of porous substrates for efficient separation of immiscible liquids |
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Lyophobic membrane has the potential to separate immiscible liquids. However, the multistep fabrication and limited option of materials have created major challenges for their practical application. Here, a strategy to fabricate superlyophobic materials is presented by using polydopamine (PDA) as an intermediate coating. The results demonstrate that PDA nanoparticles deposited on diverse substrates can direct the subsequent formation of polysiloxane microsheets (PSMSs), which increases surface roughness and results in superlyophobicity towards high surface tension (ST) liquids and superlyophilicity to liquids with ST of 33 mN m-1 and below. Superlyophobic membranes fabricated from stainless steel mesh, cotton fabric, and filter papers show high efficiency for continuous separations of chloroform/water (>96%) and carbon tetrachloride/formamide (>97%). In addition, superlyophobic melamine foam and polyurethane foam can absorb various low ST liquids with capacities ranging from 53 to 120 g g-1 and from 26.5 to 52.5 g g-1, respectively, revealing the efficient separation of a broad range of immiscible liquids. All of the as-prepared superlyophobic materials show excellent regeneration with insignificant change of separation efficiency over 10 cycles. The preparation route for superlyophobic materials in this work introduces a new strategy for the separation of immiscible liquids by both batch absorption and continuous filtration treatment. |
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School of Chemical and Biomedical Engineering |
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School of Chemical and Biomedical Engineering Mai, Van Cuong Lim, Desmond Xin An Das, Paramita Hou, Shuai Lim, Teik Thye Duan, Hongwei |
format |
Article |
author |
Mai, Van Cuong Lim, Desmond Xin An Das, Paramita Hou, Shuai Lim, Teik Thye Duan, Hongwei |
author_sort |
Mai, Van Cuong |
title |
Polydopamine-mediated superlyophobic polysiloxane coating of porous substrates for efficient separation of immiscible liquids |
title_short |
Polydopamine-mediated superlyophobic polysiloxane coating of porous substrates for efficient separation of immiscible liquids |
title_full |
Polydopamine-mediated superlyophobic polysiloxane coating of porous substrates for efficient separation of immiscible liquids |
title_fullStr |
Polydopamine-mediated superlyophobic polysiloxane coating of porous substrates for efficient separation of immiscible liquids |
title_full_unstemmed |
Polydopamine-mediated superlyophobic polysiloxane coating of porous substrates for efficient separation of immiscible liquids |
title_sort |
polydopamine-mediated superlyophobic polysiloxane coating of porous substrates for efficient separation of immiscible liquids |
publishDate |
2022 |
url |
https://hdl.handle.net/10356/154725 |
_version_ |
1722355353196167168 |