Large-Scale and Environmentally Friendly Synthesis of pH-Responsive Oil-Repellent Polymer Brush Surfaces under Ambient Conditions

Dunderdale, Gary J.; Urata, Chihiro; Miranda, D.; Hozumi, Atsushi

doi:10.1021/am503931j

Cited by 97 publications

(86 citation statements)

References 33 publications

(34 reference statements)

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“…In this Communication, we report a new type of oil/water separation mesh, which can be programmed to be either water‐selective or oil‐selective using contact angle hysteresis (CA hysteresis, difference between θ A and receding ( θ R ) CAs). This “switchability” is similar to previously reported surfaces which can alter their wetting properties in response to various stimuli . These surfaces commonly contain ionizable groups and counter‐ions, or functional groups which are exchanged to create two different surface wetting states.…”

Section: Introductionsupporting

confidence: 85%

Programmable Oil/Water Separation Meshes: Water or Oil Selectivity Using Contact Angle Hysteresis

Dunderdale

England

Sato

et al. 2016

Macro Materials & Eng

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We report a novel method for oil/water separation using stainless steel meshes functionalized with amphiphilic copolymer, poly(methacrylic acid‐co‐ethylhexylmethacrylate) (PMAA‐co‐EHMA), brushes. Because the PMAA‐co‐EHMA brush‐covered surfaces show a large contact angle hysteresis at the oil/water contact line, the meshes can be programmed to act as either water‐selective or oil‐selective filters simply by pre‐wetting the mesh with one of these liquids. These programmable meshes can separate oil/water mixtures to high filtrate purities (more than 99 % mol/mol) in both oil‐selective and water‐selective modes.

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Section: Introductionsupporting

confidence: 85%

Programmable Oil/Water Separation Meshes: Water or Oil Selectivity Using Contact Angle Hysteresis

Dunderdale

England

Sato

et al. 2016

Macro Materials & Eng

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“…10 However, SI-ATRP requires substantial amounts of chemicals, especially metal catalysts and the reaction mixtures must be rigorously deoxygenated. copper) consumption by constant regeneration of the activator (Cu(I) species) from the Cu(II) deactivator by in situ reduction by chemical, 12,14 electro-15 or photochemical means 16 or with a sacrificial anode. 12,13 Lately, several strategies have been developed to minimize the metal (i.e.…”

Section: Introductionmentioning

confidence: 99%

Wafer-scale synthesis of defined polymer brushes under ambient conditions

et al. 2015

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A method is presented that allows for the first time the preparation of highly defined polymer brush coatings on the wafer-scale under ambient conditions (room temperature, exposure to air) from a broad variety of monomers. The discovered high oxygen-tolerance of the surface-initiated Cu(0)-mediated controlled radical polymerization (SI-CuCRP) yields entire wafers homogeneously covered by a polymer brush of linear, high molar mass polymers with narrow dispersities (Đ = 1.1) at extremely high grafting densities (≈1 chain per nm 2 ). The low-tech and air tolerant method requires only ≲4 mL reaction solution containing a monomer and a ligand between two facing substrates. Thus, the SI-CuCRP is scalable to any surface area with minimal costs and minimal equipment. Despite the simplicity of the method, the high endgroup fidelity of SI-CuCRP is demonstrated by the preparation of a tetrablock copolymer brush which is the first example of a higher order block copolymer brush prepared by any surface-initiated polymerization. Finally, we present a new facile lithographic technique, the copper plate proximity printing (CP 3 ), which relies on the proximity of the bulk copper surface to the initiator-bearing substrate. The CP 3 is resist-and development-free and transfers the copper plate profile (of a copper coin) directly into an image composed of a 3D polymer brush. † Electronic supplementary information (ESI) available. See

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“…Superhydrophobic surfaces are responsive and switchable under circumstances, such as pH, light (UV, plasma, and laser), temperature, humidity and electrochemical treatments. All of these depend on the type of materials utilized for coating applications [191,192,193,194,195,196,197]. Moreover, the durability and breathability of anti-wetting surface is an important question we must address in order to broaden its practical applications.…”

Section: Promising Applications Of Superhydrophobic Fabricsmentioning

confidence: 99%

Recent Progress in Fabrication and Applications of Superhydrophobic Coating on Cellulose-Based Substrates

et al. 2016

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Multifuntional fabrics with special wettability have attracted a lot of interest in both fundamental research and industry applications over the last two decades. In this review, recent progress of various kinds of approaches and strategies to construct super-antiwetting coating on cellulose-based substrates (fabrics and paper) has been discussed in detail. We focus on the significant applications related to artificial superhydrophobic fabrics with special wettability and controllable adhesion, e.g., oil-water separation, self-cleaning, asymmetric/anisotropic wetting for microfluidic manipulation, air/liquid directional gating, and micro-template for patterning. In addition to the anti-wetting properties and promising applications, particular attention is paid to coating durability and other incorporated functionalities, e.g., air permeability, UV-shielding, photocatalytic self-cleaning, self-healing and patterned antiwetting properties. Finally, the existing difficulties and future prospects of this traditional and developing field are briefly proposed and discussed.

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Large-Scale and Environmentally Friendly Synthesis of pH-Responsive Oil-Repellent Polymer Brush Surfaces under Ambient Conditions

Cited by 97 publications

References 33 publications

Programmable Oil/Water Separation Meshes: Water or Oil Selectivity Using Contact Angle Hysteresis

Programmable Oil/Water Separation Meshes: Water or Oil Selectivity Using Contact Angle Hysteresis

Wafer-scale synthesis of defined polymer brushes under ambient conditions

Recent Progress in Fabrication and Applications of Superhydrophobic Coating on Cellulose-Based Substrates

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