Switching Liquid Repellent Surfaces

Lampitt, R. A.; Crowther, and J. M.; Badyal, J. P. S.

doi:10.1021/jp002234a

Cited by 39 publications

(62 citation statements)

References 23 publications

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“…A few previous studies have reported the oddity of stimuli-responsive surfaces with static hexadecane contact angles greater than static water contact angles. [32][33][34][35] However, in our investigation we report the unique case in which the receding contact angle of a low surface energy fluid (hexadecane) is greater than the advancing contact angle of water. This type of surface behavior has potential application as self-cleaning coatings and oil-resistant anti-fog coatings.…”

mentioning

confidence: 68%

Self‐Cleaning and Anti‐Fog Surfaces via Stimuli‐Responsive Polymer Brushes

2007

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mentioning

confidence: 68%

Self‐Cleaning and Anti‐Fog Surfaces via Stimuli‐Responsive Polymer Brushes

2007

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“…These comprised poly(ethylene-alt-maleic anhydride) alternating copolymer as a reference standard (based on previously reported polyelectrolyte-fluorosurfactant switching studies 32 ), poly(styrene-alt-maleic anhydride) where the aforementioned alternating copolymer ethylene segments are replaced with styrene segments, and finally poly(styrene-co-maleic anhydride) which is a copolymer consisting of single maleic anhydride units alternating with styrene block segments (because maleic anhydride does not homopolymerise 43 ). Atomic force microscopy (AFM) images were collected in tapping mode at 20 °C in ambient air (Nanoscope III, Digital Instruments, Santa Barbara, CA) using a tapping mode tip with a spring constant of 42-83 N m -1 (Nanoprobe).…”

Section: Introductionmentioning

confidence: 99%

Ultrafast Oleophobic–Hydrophilic Switching Surfaces for Antifogging, Self-Cleaning, and Oil–Water Separation

Brown

Atkinson

Badyal

2014

ACS Appl. Mater. Interfaces

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. (2014) 'Ultra-fast oleophobic-hydrophilic switching surfaces for anti-fogging, self-cleaning, and oil-water separation.', ACS applied materials interfaces., 6 (10). pp. 7504-7511.Further information on publisher's website:http://dx.doi.org/10.1021/am500882yPublisher's copyright statement:This document is the Accepted Manuscript version of a Published Work that appeared in nal form in ACS Applied Materials Interfaces, copyright c American Chemical Society after peer review and technical editing by the publisher. To access the nal edited and published work see http://pubs.acs.org/doi/abs/10.1021/am500882y. Additional information:Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-pro t purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. be further enhanced by the incorporation of surface roughness to an extent that it reaches a sufficiently high level (water contact angle <10° and hexadecane contact angle >110°) which, when combined with the inherent ultra-fast switching speed, yields oil-water mixture separation efficiencies exceeding 98%.

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“…A number of approaches have been employed to reach this goal, including (a) synthesis of functional polymers with specific composition and architecture; [2][3][4][5][6][7] One example is a novel type of segmented polyurethanes having both fluorocarbon and polyethylene glycol, which shows a range of hydrophobic and hydrophilic properties in response to the polarity of the contacting medium; [4] (b) blending of a virgin polymer materials with small amounts of (macro)-molecular additive; [8][9][10][11][12] (c) surface modification by various chemical/physical treatments. [13][14][15][16] Poly(carbonate urethane)s (PCU) are used as biomedical materials of longterm implants because of their biostability and moderate biocompatibility same as poly(ether urethane)s. [17] The moderate biocompatibility of PCU is due to the hard segment microdomains at the surface because it would keep protein in native or near-native state on adsorption that has the similar size. [18] Polyurethanes with phosphatidylcholine polar head groups are desired due to the advantage of better biocompatibility.…”

Section: Introductionmentioning

confidence: 99%

Novel Biomembrane‐Mimicking Polymer Surface with Environmental Responsiveness

Tan

Sun

et al. 2005

Macromol. Rapid Commun.

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Summary: In this article, we designed and synthesized novel segmented poly(carbonate urethane)s containing both hydrophobic fluorinated alkyl group and hydrophilic phosphatidylcholine polar head groups on the side chain. The contact angle measurement, XPS, together with ATR‐IR investigation indicated a reversible overturn of the phosphatidylcholine groups with the movement of the hydrophobic fluorinated alkyl groups when the samples were treated in dry air or water. The change in environment from air to water induced a reorganization of the surface in order to minimize the interfacial free energy, resulting in a macroscopic change of surface wettability. The good environmental responsiveness of such biomembrane‐mimicking films may find successful applications as biomaterials.Environmentally responsive surface using FPCPCU50 as an example; FPCPCU50 coated on aligned carbon nanotube film and dried in vacuum at 50 °C for 7 h and sample c treated in hot water at 80 °C for 1 h.imageEnvironmentally responsive surface using FPCPCU50 as an example; FPCPCU50 coated on aligned carbon nanotube film and dried in vacuum at 50 °C for 7 h and sample c treated in hot water at 80 °C for 1 h.

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Switching Liquid Repellent Surfaces

Abstract: Cationic fluorosurfactants complexed to maleic anhydride plasma polymer layers readily undergo surface reconstruction in response to their local liquid environment. Repetitive alternation between oleophobic and hydrophilic behavior is observed.

Cited by 39 publications

References 23 publications

Self‐Cleaning and Anti‐Fog Surfaces via Stimuli‐Responsive Polymer Brushes

Self‐Cleaning and Anti‐Fog Surfaces via Stimuli‐Responsive Polymer Brushes

Ultrafast Oleophobic–Hydrophilic Switching Surfaces for Antifogging, Self-Cleaning, and Oil–Water Separation

Novel Biomembrane‐Mimicking Polymer Surface with Environmental Responsiveness

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