Electrochemical synthesis of novel conductive polymer and corrosion protection properties on aluminium

Abstract

In this study, the new original copolymer film of pyrrole and 2-amino-4-methyl-pyridine has been electrochemically synthesised on 7075 aluminium alloy. The synthesis was achieved in aqueous oxalic acid containing 1 : 1 monomer feed ratio. The characteristics of copolymer film were compared with polypyrrole film on Al under the same conditions. The characterisation of synthesised polymers was realised with the help of scanning electron microscopy. Fourier transform infrared spectroscopy and gel permeation chromatography techniques. The conductivity values of films were measured with four-probe technique. The stability of copolymer film as a coating material has also been investigated in 3?5% NaCl solution. The quantum theoretical calculations have been employed, and some parameters (dipole moment, energy of the highest occupied molecular orbital and lowest unoccupied molecular orbital) were determined. The calculated quantum parameters revealed correlation with experimental data. Under such severe conditions, the copolymer film exhibits protective coating behaviour on Al. This original, highly stable and conductive copolymer film can find wide application area for various purposes (anticorrosive, electrocatalytic, etc.).

The ability of Mg2Ge crystals to behave as ‘smart release’ inhibitors of the aqueous corrosion of Zn-Al-Mg alloys

“…[25][26] To date, several attempts at nano-container design have been made. These include: polymer based capsules, 39 halloysites (aluminosilicates), [40][41][42] polyelectrolyte shells, 43 layered double hydroxides (LDH), 44 ion exchange resins, 45 conducing polymers, 46 and mesoporous inorganic materials (e.g. silica) 41,47 .…”

In-situ TiB2–NiAl composites synthesised by arc melting: oxidation behaviour, oxidation kinetics and oxidation mechanism

“…To solve these problems different types of reinforcing particle have been used to toughen the NiAl alloy. These include metals (Fe, Mo, Nb, W, Ti, Zr, Hf) [4][5][6][7][8][9][10], carbides and borides (TiC, SiC, B 4 C, TiB 2 ) [11][12][13][14] and oxides (Al 2 O 3 , Y 2 O 3 , Y 3 Al 5 O 12 ) [15][16][17][18]. To further expand the application range of NiAl matrix composites under high temperature, it is necessary to study the oxidation behaviour of NiAl composite in high-temperature environments.…”

Self-Healing Performance of Multifunctional Polymeric Smart Coatings

“…Various nanocontainers have been introduced including polymer containers [25], halloysite [26], ion exchange organic resins [27], nanocontainer with a polyelectrolyte shell [28], layered double hydroxide (LDH) conductive polymer matrix [29], montmorillonite [30], and mesoporous inorganic materials [31]. Haddadi et al [32] successfully synthesized a carbon hollow sphere using the silica templating method and encapsulated 2-mercaptobenzimidazole (MBI) inhibitor.…”