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CO2-, electric potential-, and photo-switchable-hydrophilicity membrane (x-SHM) as an efficient color-changeable tool for oil/water separation

Dehkordi, Tanin Fazel ; Shirin-Abadi, Abbas Rezaee ; Karimipour, Kianoush ; Mahdavian, Ali Reza

Polymer (Guilford), 2021-01, Vol.212, p.123250, Article 123250 [Periódico revisado por pares]

Kidlington: Elsevier Ltd

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Título:
CO2-, electric potential-, and photo-switchable-hydrophilicity membrane (x-SHM) as an efficient color-changeable tool for oil/water separation
Autor: Dehkordi, Tanin Fazel ; Shirin-Abadi, Abbas Rezaee ; Karimipour, Kianoush ; Mahdavian, Ali Reza
Assuntos: Bubbling ; Carbon dioxide ; CO2-Responsive ; Color ; Contact angle ; Controllable wettability membrane ; Electric contacts ; Electric potential ; Electric potential-responsive ; Electrospinning ; Electrospun membrane ; Hydrophobicity ; Irradiation ; Isomerization ; Membrane permeability ; Membranes ; Polarity ; Polymethyl methacrylate ; Polymethylmethacrylate ; Separation ; Solid phases ; Spiropyran ; Spiropyrans ; Ultraviolet radiation ; Wastewater treatment ; Wettability
É parte de: Polymer (Guilford), 2021-01, Vol.212, p.123250, Article 123250
Descrição: Controlling the wettability of a membrane can provide a wide application range, such as wastewater treatment. In this study, a porous membrane was electrospun by doping hydroxyl functionalized spiropyran (SPOH) into poly (methyl methacrylate-co-N, N diethylaminoethyl methacrylate), PMMA-co-PDEAEMA matrix. The membrane demonstrates visual responsivity to CO2 bubbling, electric potential (EP), and UV–Vis irradiation via changing color from colorless to pink, yellow, and purple, respectively. Water contact angle measurement reduction demonstrated that the hydrophobic nature of the membrane was switched to hydrophilic by bubbling CO2 while applying the electric potential (EP) switched back the membrane to its original state. Also, UV–Vis solid-phase measurements showed the photoresponsivity of the membrane. Interestingly, all of these processes are accompanied by noticeable color changes originating from the isomerization of non-polar spiropyran and its polar form named merocyanine. Therefore the combination of a CO2-responsive material and a photochromic-material leads to adjustable polarity and its subsequent selective permeability behavior of the electrospun membrane used in oil/water separation with visual detection. [Display omitted] •CO2- and EP-chromic membrane based on spiropyran with switchable hydrophilicity feature.•Prepared membrane was applied for oil/water separation with visible color changing.•Membrane behavior and color changing of membrane by applying triggers.•Study Effect of UV–Vis light as an individual trigger on polarity of membrane.
Editor: Kidlington: Elsevier Ltd
Idioma: Inglês

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CO2-, electric potential-, and photo-switchable-hydrophilicity membrane (x-SHM) as an efficient color-changeable tool for oil/water separation

Dehkordi, Tanin Fazel ; Shirin-Abadi, Abbas Rezaee ; Karimipour, Kianoush ; Mahdavian, Ali Reza

Kidlington: Elsevier Ltd

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