Towards the mechanism of electrochemical activity and self-healing of 1 wt% PTSA doped polyaniline in alkyd composite polymer coating: combined AFM-based studies

Li, Jing; Huang, Hui; Fielden, Matthew L.; Pan, Jinshan; Ecco, Luiz Gustavo; Schellbach, Carsten; Delmas, G.; Claesson, Per M.

doi:10.1039/c6ra00661b

Cited by 19 publications

(8 citation statements)

References 92 publications

(143 reference statements)

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“…It was also observed that the inhibition effect of CeO 2 nanoparticles originates from the nanoparticles stabilization through acetic acid. Recently, Li et al 85 utilized in situ AFM, intermodulation AFM and electrochemical controlled AFM with combination of cyclic voltammetry, FTIR etc. in order to investigate the mechanism of self-healing properties of a composite coating, PTSA (P-toluene sulfonic acid) doped with polyaniline (PANI) (Fig.…”

Section: Conventional Characterization Techniquesmentioning

confidence: 99%

“…(c) Represents conservative and dissipative work as the function of oscillation amplitude (measured at marked areas in (b2)). 85 Reprinted with permission from ref. 85 methodology are the unavailability of accurate lateral shear force measurements applied to carbon steels under corrosive media as well as a methodology for simultaneous (a single-cell system) in situ AFM and electrochemical analysis of thin lms of corrosion inhibitors on carbon steels.…”

Section: Conventional Characterization Techniquesmentioning

confidence: 99%

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Carbon steel corrosion: a review of key surface properties and characterization methods

2017

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Section: Conventional Characterization Techniquesmentioning

confidence: 99%

Section: Conventional Characterization Techniquesmentioning

confidence: 99%

Carbon steel corrosion: a review of key surface properties and characterization methods

2017

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“…In a series of studies by Li and his colleagues, they also studied the electrochemical activity of 1.0 wt% p-toluene sulfonic acid (PTSA)-doped PANI in solvent-borne alkyd composite coating, as well as its self-healing corrosion protection mechanism on carbon steel in 3.0 wt% NaCl solution [67]. Through the CV (cyclic voltammetry) curves and EC-AFM imaging, it was proven that doped PANI at low percentage had extremely high electrochemical activity, showing contraction at the reduction potential and expansion at the oxidation potential, which provided evidence for a reversible redox reaction between the ES and LB forms.…”

Section: Coating Protectionmentioning

confidence: 99%

Application of Electrochemical Atomic Force Microscopy (EC-AFM) in the Corrosion Study of Metallic Materials

Chen

Qin

et al. 2020

Materials

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Electrochemical atomic force microscopy (EC-AFM), a branch of a scanning probe microscopy (SPM), can image substrate topography with high resolution. Since its inception, it was extended to a wide range of research areas through continuous improvement. The presence of an electrolytic cell and a potentiostat makes it possible to observe the topographical changes of the sample surface in real time. EC-AFM is used in in situ corrosion research because the samples are not required to be electrically conductive. It is widely used in passive film properties, surface dissolution, early-stage corrosion initiation, inhibitor efficiency, and many other branches of corrosion science. This review provides the research progress of EC-AFM and summarizes the extensive applications and investigations using EC-AFM in corrosion science.

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“…Magnetic force microscopy (MFM) is a high spatially resolved, quantitative imaging technique that has been used extensively in research to detect probe-sample interactions, force gradient, and energy dissipation from superparamagnetic iron oxide NPs for applications such as biomedical devices 26,27 . Due to the appealing advantages of in-situ atomic force microscopy (AFM)- based methods, it thus appeared interesting to study the formation in real time in solution using in-situ AFM-based methods as a model platform for the studies of the self- assembly mechanism of NP-fibril structured functionalized materials 28 .…”

Section: Introductionmentioning

confidence: 99%

Self-assembly of plant protein fibrils interacting with superparamagnetic iron oxide nanoparticles

Pylypchuk

Johansson

et al. 2019

Sci Rep

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In situ fibrillation of plant proteins in presence of the superparamagnetic iron oxide nanoparticles (NP) promoted formation of a hybrid nanocomposite. The morphology of NP-fibril composite was revealed using ex-situ atomic force microscopy (AFM) in air. The NP-fibrils were associated into extended multi-fibril structures, indicating that the addition of NPs promoted protein association via β-sheet assembly. Real-time movement of NPs attached to fibrils under an external magnetic field was visualized using in-situ AFM in liquid, revealing that composite structures were stable at low pH, and displaying dipolar property of the NPs in the composite at high pH. Changes in magnetic properties of NPs when interacting with protein fibrils were quantitatively mapped using magnetic force microscopy (MFM). The magnetic moment of the NPs in composite was increased by co-existing with protein at low pH, while their dipolar nature was maintained at high pH. Self-assembly of the protein into fibrils is accelerated with increasing NP concentration within an optimal range, which is attributed to a fibrillation-competent conformation of the peptides. The latter was explained by the formation of favorable hydrogen bonds, electrostatic interactions, and efficient surface energy transfer between NPs and proteins.

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Towards the mechanism of electrochemical activity and self-healing of 1 wt% PTSA doped polyaniline in alkyd composite polymer coating: combined AFM-based studies

Abstract: The mechanisms of electrochemical activity and the self-healing properties of a composite alkyd coating with 1 wt% PTSA doped polyaniline were investigated.

Cited by 19 publications

References 92 publications

Carbon steel corrosion: a review of key surface properties and characterization methods

Carbon steel corrosion: a review of key surface properties and characterization methods

Application of Electrochemical Atomic Force Microscopy (EC-AFM) in the Corrosion Study of Metallic Materials

Self-assembly of plant protein fibrils interacting with superparamagnetic iron oxide nanoparticles

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