Silver nanoparticles/polyvinyl alcohol film: studies of thermal characterization, AFM and corrosion protection by electrodeposition on 304L stainless steel

Samide, Adriana; Iacobescu, Gabriela; Tutunaru, Bogdan; Iordache, Simona

doi:10.1007/s10973-020-10444-0

Cited by 8 publications

(9 citation statements)

References 33 publications

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“…The environment temperature from the electrochemical cell was continuously controlled with a specific thermometer. The electrochemical assembly was also reported in our previous studies [ 5 , 6 , 7 , 8 , 32 ].…”

Section: Methodssupporting

confidence: 73%

“…The average roughness ( R a ), root-mean-square roughness ( R q ) and maximum peak-to-valley height ( R p−v ) of the surfaces were estimated over the areas of 45 × 45 μm 2 . The devices were also described in our early studies [ 6 , 8 ].…”

Section: Methodsmentioning

confidence: 99%

“…Therefore, a particular attention has been paid to the corrosion inhibition processes of metals/alloys with protective films, developed by the adsorption of some polymers on their surface. The anticorrosion performance of various materials, including polyvinyl acetate [ 5 ], polyvinyl alcohol/silver nanoparticle composite [ 6 , 7 ], their copolymers, such as poly(vinyl butyral-co-vinyl alcohol-co-vinyl acetate) [ 8 ], polyamide [ 9 ], polypyrrole [ 10 ], chitosan [ 11 ] and polyacrylic acid [ 12 ], was reported for the corrosion inhibition of copper in different media [ 9 , 10 , 11 ], carbon steel [ 5 , 8 ], stainless steel [ 6 , 7 ] and aluminum [ 12 ]. Additionally, self-healing vinyl-ester polymer [ 13 ] and epoxy [ 14 ] based coatings, as well as Prunus domestica gum-grafted polyaniline (PDG-g-PANI) composite [ 15 ], were used to promote carbon steel [ 13 , 14 , 15 ] and stainless steel [ 15 ] corrosion inhibition.…”

Section: Introductionmentioning

confidence: 99%

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New Inhibitor Based on Hydrolyzed Keratin Peptides for Stainless Steel Corrosion in Physiological Serum: An Electrochemical and Thermodynamic Study

Samide,

Iacobescu,

Tutunaru

et al. 2024

Polymers

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Reducing the impact of some biological fluids on bioimplants involves the control of surface characteristics by modeling the interface architecture and assembling ecofriendly thin films to retard corrosion. Therefore, a mixture of hydrolyzed keratin peptides (HKER) was investigated as a corrosion inhibitor for 304L stainless steel (SS) in physiological serum (PS), using electrochemical measurements associated with optical microscopy and atomic force microscopy (AFM). The tests, performed for various concentrations of the inhibitor at different temperatures, showed that the inhibition efficiency (IE) decreased with a rise in temperature and proportionally increased with the HKER concentration, reaching its maximum level, around 88%, at 25 °C, with a concentration of 40 g L−1 HKER in physiological serum. The experimental data best fitted the El-Awady adsorption model. The activation parameters (Ea, ∆Ha and ∆Sa) and the adsorption ones (∆Gads0, ∆Hads, ∆Sads) have highlighted a mixed action mechanism of HKER, revealing that physisorption prevails over chemisorption. AFM parameters, such as the average roughness (Ra), root-mean-square roughness (Rq) and maximum peak-to-valley height (Rp−v), confirmed HKER adsorption, indicating that a smoother surface of the 304L stainless steel was obtained when immersed in a PS-containing inhibitor, compared to the surface designed in blank solution, due to the development of a protective layer on the alloy surface.

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Section: Methodssupporting

confidence: 73%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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New Inhibitor Based on Hydrolyzed Keratin Peptides for Stainless Steel Corrosion in Physiological Serum: An Electrochemical and Thermodynamic Study

Samide,

Iacobescu,

Tutunaru

et al. 2024

Polymers

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“…During the coordination bonding of PVA with the metallic surface, the polar hydrophilic side orients or directs toward the metal side and the hydrophobic hydrocarbon chain directs toward the solution side. Therefore, the corrosion protection mechanism of PVA can be assumed similar to the mechanism of action of organic corrosion inhibitors [59][60][61][62][63]. The oxygen atom of the -OH group has two lone pairs of electrons that can be directly transferred in the metallic d-orbital during the coordination bonding.…”

Section: Polyvinyl Alcohol (Pva): Fundamental and Anticorrosive Propertymentioning

confidence: 99%

Polyvinyl alcohol (PVA) as a biodegradable polymeric anticorrosive material: A review on present advancements and future directions

Verma

Quraishi

2022

Corrosion Engineering, Science and Technology

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Polyvinyl Alcohol (PVA) is a water-soluble biodegradable polymer with many industrial and biological applications. Because of its polymeric nature, reasonably high aqueous phase solubility and biodegradable properties, the use of PVA and its suitably modified derivatives as aqueous and coating phase corrosion inhibitors have acquired great recent attention. PVA and its derivatives are associated with a proper combination of hydrophilicity and hydrophobicity, essential for effective anticorrosive activity. The present review aims to describe the past and present advancements in using PVA and its derivatives as aqueous and coating phase corrosion inhibitors. Bonding of PVA with the metallic surface in anodic, basic and neutral electrolytes has also been proposed along with their orientation. They become effective by adsorbing on the metal surface. They act as mixed-type inhibitors and create a barrier to the charge transfer process. Various experimental and computational techniques are used to describe their corrosion inhibition property.

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“…The chemistry of interfacial interaction of GO with epoxy improve the performance of nanocomposites. 19 The study of surface energy, wettability and adhesion of low surface energy materials is possible by measuring the contact angle using simple method like sessile drop method instead of expensive method.…”

mentioning

confidence: 99%

Investigation of Structural and Thermal Properties of Graphene Oxide Reinforced Epoxy Nanocomposites

Gaur¹,

Raghav²,

Sagar³

et al. 2022

ECS J. Solid State Sci. Technol.

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A nanocomposites thin film was prepared by adding exfoliated GO in epoxy-hardner solution in different weight ratio. We investigated the thermal and surface properties of epoxy- graphene oxide (GO) nanocomposites using differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FTIR), atomic force microscopy (AFM), and contact angle measurement method. AFM and contact angle results show that graphene oxide provides the best reinforcement in epoxy. AFM was used to investigate the dispersion of GO and structural morphology of epoxy nanocomposites. FTIR results show that exfoliated GO of two-dimensional shape favors the hardening process of the epoxy matrix, increasing its reaction rate by observing an epoxy stretching frequency at 907 cm−1. The GO modified with an amino group of epoxy led to an increase of cross-linking density. FTIR absorption peak in 1700–1500 cm−1 regions is due to amino group. This is attributed to the significant increase of glass transition temperature of epoxy/GO nanocomposites as shown in DSC spectra. The contact angle and surface roughness increases with increase in concentration of GO in epoxy shows roughness induced hydrophobic surface. The solid surface energy was calculated by contact angle favors the good dispersion of GO in epoxy matrix.

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Silver nanoparticles/polyvinyl alcohol film: studies of thermal characterization, AFM and corrosion protection by electrodeposition on 304L stainless steel

Cited by 8 publications

References 33 publications

New Inhibitor Based on Hydrolyzed Keratin Peptides for Stainless Steel Corrosion in Physiological Serum: An Electrochemical and Thermodynamic Study

New Inhibitor Based on Hydrolyzed Keratin Peptides for Stainless Steel Corrosion in Physiological Serum: An Electrochemical and Thermodynamic Study

Polyvinyl alcohol (PVA) as a biodegradable polymeric anticorrosive material: A review on present advancements and future directions

Investigation of Structural and Thermal Properties of Graphene Oxide Reinforced Epoxy Nanocomposites

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