Facile fabrication of superhydrophobic polyaniline structures and their anticorrosive properties

Abstract

We report a simple approach for the preparation of superhydrophobic polyaniline (PANI) and its application for the corrosion protection coatings. First, PANI was synthesized conventionally by oxidative polymerization with APS. Subsequently, PANI with different wettability was obtained by modification with different surfactants. The surface modification of PANI with three different surfactants (sodium dodecylbenzenesulfonate, polyethylene glycol, and cetyltrimethylammonium bromide) provided excellent surface superhydrophobicity (water contact angle >150°). The structure and morphology of as‐prepared PANI were characterized with Fourier transform infrared, Energy dispersive X‐ray spectroscopy, and Scanning electron microscopy. Corrosion protection performance of PANI with different wettability was evaluated in 3.5% NaCl electrolyte using Tafel polarization curves and electrochemical impedance spectroscopy. The results indicated that various superhydrophobic PANI coatings have better anticorrosion performance as compared to the hydrophilic PANI. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 44248.

Conductive Polyaniline-Based Microwire Arrays for SO2 Gas Detection

“…Conductive polymers are a promising class of materials for various applications as they possess similar electrical properties to inorganic conductive materials, while also being highly processable and flexible. , Among the conductive polymers, polyaniline (PANI) stands out as a typical material, possessing several remarkable properties, such as reversible doping-dedoping behavior, excellent flexibility, chemical and thermal stability, good absorption properties, lightweight, corrosion resistance, and easy synthesis. PANI can be prepared in various dimensions, such as thin films, fibers, nanorods, nanosheets, and nanowire arrays, − and has found extensive applications in diverse fields such as electrochemical sensing, − anticorrosion coatings, , electromagnetic shielding, , solar cells, , and biomedical devices. − The one-dimensional (1D) PANI materials have garnered significant interest, and numerous methods have been developed for their synthesis. 1D conductive materials have a high aspect ratio, and a small amount of material can construct a conductive network capable of maintaining excellent conductivity.…”

“…1,2 Among the conductive polymers, polyaniline (PANI) stands out as a typical material, possessing several remarkable properties, such as reversible dopingdedoping behavior, excellent flexibility, chemical and thermal stability, good absorption properties, lightweight, corrosion resistance, and easy synthesis. PANI can be prepared in various dimensions, such as thin films, fibers, nanorods, nanosheets, and nanowire arrays, 3−7 and has found extensive applications in diverse fields such as electrochemical sensing, 8−10 anticorrosion coatings, 11,12 electromagnetic shielding, 13,14 solar cells, 15,16 and biomedical devices. 17−19 The one-dimensional (1D) PANI materials have garnered significant interest, and numerous methods have been developed for their synthesis.…”

Superhydrophobic PES/PDA/ODTS fibrous mat prepared by electrospinning and silanization modification for oil/water separation

“…Owing to their self‐cleaning and antifouling properties, superhydrophobic surfaces with water contact angles higher than 150° have drawn both great theoretical and technical interest in recent years. For a flat solid surface, the contact angle (CA) θ can be described by Young's model .…”

Surfactant doped polyaniline coatings for functionalized gas diffusion layers in low temperature fuel cells

“…The chemical oxidative polymerization of aniline was performed in aqueous solution at room temperature as previously reported by Xu et al 53 However, the drop-coating method used by Xu et al was modified as follows to enable the dip-coating of the carbon paper and produce uniform coatings. For each dip-coating approach two reaction solutions A and B were prepared in a beaker.…”