Accumulation of 2-Acetylamino-5-mercapto-1,3,4-thiadiazole in chitosan coatings for improved anticorrosive effect on zinc

Szőke, Árpád Ferenc; Szabó, Gabriella; Hórvölgyi, Zoltán; Albert, Emőke; Végh, Attila Gergely; Zimányi, László; Mureşan, Liana Maria

doi:10.1016/j.ijbiomac.2019.09.114

Cited by 16 publications

(12 citation statements)

References 37 publications

(43 reference statements)

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“…The calculated (Equation ( 4)) inhibition efficiency IE% value for the Zn/Chit sample was close to 6%. This indicates that, as was expected from previous studies, the Chit coating alone did not offer any significant protection to the metal in the 3 w/w% NaCl solution, due to its porosity [14,18]. In contrast, the EP and Chit/EP coatings exhibited 99.95%, and 99.97% inhibition efficiency values, respectively.…”

Section: Znsupporting

confidence: 76%

“…The examination of the coatings' thickness and their surface will enlighten us to the causes of this behavior (see Section 2.1). The pseudo-porosity of the coatings can be calculated as in previous studies regarding chitosan [14] and titanium nitride [36]…”

Section: Influence Of the Immersion Timementioning

confidence: 99%

“…Chitosan (Chit) is a polysaccharide widely used and studied for several applications in medicine [12] (development of antibacterial agents and wound healing [13]), agriculture, packaging, electroanalysis, the temporary anti-corrosive protection of zinc [14], the protection of biocompatible magnesium alloys [15], and the treatment of heavy-metal ions [16]. This wide array of applications is possible due to its eco-friendly nature, simple production process, and antimicrobial properties.…”

Section: Introductionmentioning

confidence: 99%

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Temporary Anti-Corrosive Double Layer on Zinc Substrate Based on Chitosan Hydrogel and Epoxy Resin

Ovari

Szőke

Katona

et al. 2023

Gels

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In practice, metal structures are frequently transported or stored before being used. Even in such circumstances, the corrosion process caused by environmental factors (moisture, salty air, etc.) can occur quite easily. To avoid this, metal surfaces can be protected with temporary coatings. The objective of this research was to develop coatings that exhibit effective protective characteristics while also allowing for easy removal, if required. Novel, chitosan/epoxy double layers were prepared on zinc by dip-coating to obtain temporary tailor-made and peelable-on-demand, anti-corrosive coatings. Chitosan hydrogel fulfills the role of a primer that acts as an intermediary between the zinc substrate and the epoxy film to obtain better adhesion and specialization. The resulting coatings were characterized using electrochemical impedance spectroscopy, contact angle measurements, Raman spectroscopy, and scanning electron microscopy. The impedance of the bare zinc was increased by three orders of magnitude when the protective coatings were applied, proving efficient anti-corrosive protection. The chitosan sublayer improved the adhesion of the protective epoxy coating. The structural integrity and absolute impedance of the protective layers were conserved in both basic and neutral environments. However, after fulfilling its lifespan, the chitosan/epoxy double-layered coating could be removed after treatment with a mild acid without damaging the substrate. This was because of the hydrophilic properties of the epoxy layer, as well as the tendency of chitosan to swell in acidic conditions.

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Section: Znsupporting

confidence: 76%

Section: Influence Of the Immersion Timementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Temporary Anti-Corrosive Double Layer on Zinc Substrate Based on Chitosan Hydrogel and Epoxy Resin

Ovari

Szőke

Katona

et al. 2023

Gels

Self Cite

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“…These compounds have a wide range of biological properties, including antiproliferative [7], antimicrobial [8,9], anti-inflammatory [10,11], antitumor [12,13], antioxidant [14,15], antitubercular [16], antileishmanial [17], anticonvulsant [18,19], antibacterial [20,21], antiviral [22], analgesic [23], antipsychotic [24], antidepressive [25], antihypertensive [26], and antihistamine [27]. Other analogs of these ring systems are important as MDR-TB inhibitors and anticorrosive agent [28,29]. Similarly, the pharmaceutical activities of diverse 1,3,4-thiadiazole derivatives and fused heterocyclic thiadiazole analogs have been widely studied as antibacterial, antioxidant [30,31], antifungal [32], and antihyperlipidemic [33].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and antimicrobial evaluation of novel tris‐thiadiazole derivatives

Kalantarian

Kefayati

Montazeri

2022

Journal of Heterocyclic Chem

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1,1 0 ,1 00 -(((1,3,5-triazine-2,4,6-triyl)tris(oxy))tris(benzene-4,1-diyl))tris(ethan-1-one) 1 reacted with extra bromine to afford the corresponding 1,1 0 ,1 00 -(((1,3,5-triazine-2,4,6-triyl)tris(oxy))tris(benzene-4,1-diyl))tris(2-bromoethan-1-one) 2. Also, reaction of acetophenone derivatives 3 with 5-amino-1,3,4-thiadiazole-2-thiol 4 give the 5-((1-arylethylidene)amino)-1,3,4-thiadiazole-2-thiol 5. Compounds 5a-h reacted with 2 in the presences of acetic acid to afford novel 1,1 0 ,1 00 -(((1,3,5triazine-2,4,6-triyl)tris(oxy))tris(benzene-4,1-diyl))tris(2-((5-((1-arylethylidene) amino)-1,3,4-thiadiazol-2-yl)thio)ethan-1-one) derivatives 6a-h. Antimicrobial activities of the products were evaluated against five bacterial strains including Streptococcus pneumoniae, Staphylococcus aureus, Bacillus subtilis, Escherichia coli, and Serratia marcescens. The antimicrobial results indicated that products 6b, 6d, and 6h had excellent activities as compared to other synthesized products against a variety of bacterial strains. The compounds having Cl and NO 2 substituents showed notable inhibition of bacterial growth almost near to Ciprofloxacin as standard.

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“…some coatings. For instance, 2-acetylamino-5-mercapto-1,3,4-thiadiazole (C-5,Figure 12) has shown a good ability to improve the protective quality of chitosan coatings on zinc, for which the protection efficiency passed from 64 to 91% in the presence of C-5 derivative[119].…”

mentioning

confidence: 99%

Azole-Based Compounds as Corrosion Inhibitors for Metallic Materials

Ibrahimi¹,

Guo²

2021

Azoles - Synthesis, Properties, Applications and Perspectives

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To face against metallic corrosion and its corresponding undesirable consequences, the implementation of corrosion inhibitor compounds is a well-known method. In this regard, a wide range of organic heterocyclic molecules has been employed as anti-corrosion agents for several metal/medium systems. Azole-based compounds, namely, N-azole, N&S-azole (i.e., thiazole), and N and O-azole (i.e., oxazole) molecules, as well as their derivatives, have shown an excellent ability to act as efficient corrosion inhibitors for different metals and alloys in various corrosive media. For this purpose, we aim in the current chapter to discuss the application of these compounds as retarders of metallic corrosion as well as related highlighted outcomes in recent years.

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Accumulation of 2-Acetylamino-5-mercapto-1,3,4-thiadiazole in chitosan coatings for improved anticorrosive effect on zinc

Cited by 16 publications

References 37 publications

Temporary Anti-Corrosive Double Layer on Zinc Substrate Based on Chitosan Hydrogel and Epoxy Resin

Temporary Anti-Corrosive Double Layer on Zinc Substrate Based on Chitosan Hydrogel and Epoxy Resin

Synthesis and antimicrobial evaluation of novel tris‐thiadiazole derivatives

Azole-Based Compounds as Corrosion Inhibitors for Metallic Materials

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