Design and characterization of non-toxic nano-hybrid coatings for corrosion and fouling resistance

Saravanan, P.; Jayamoorthy, K.; Kumar, S. Ananda

doi:10.1016/j.jsamd.2016.07.001

Cited by 33 publications

(20 citation statements)

References 26 publications

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“…The presence of siloxane content was confirmed by EDX analysis showing 6.61 atomic wt.% of Si. Similar findings on the presence of siloxane content homogeneously distributed over the surface of the composite coatings were reported by other researchers . On the other hand, the presence of ZnO nanoparticles was confirmed by EDX analysis showing 0.14 atomic wt.% of Zn and 5.01 atomic wt.% of Si.…”

Section: Resultssupporting

confidence: 90%

“…The digital images of coatings before and after immersion have been reported in Figure wherein the optical micrographs depict the growth of microorganisms over the surface of the films. As clearly seen from the digital images after immersion, EPC coating showed extensive fouling growth consisting of several fouling organisms such as mussels, barnacles, oysters, polychaetes, and tunicates and a thick slime layer . On the other hand, EPZ‐1 nanocomposite coating exhibited higher fouling resistance, showing a clean panel with a small amount of slime adherence with a few macroorganisms .…”

Section: Resultsmentioning

confidence: 95%

“…The pronounced effect of detained degradation was noticed in EPZ‐1 nanocomposite as compared with EPZ‐3.5 and EPZ‐6.5. This can be attributed to the homogeneous dispersion of ZnO nanoparticle within the EP‐hPDMS matrix, which restricted the motion of mobile polymeric chains by introducing zigzag and tortuous pathways, resulting in retarded degradation. Hence, the methodology adapted in the present study can be used to fabricate highly thermally stable nanocomposite coatings for underwater marine applications as compared with the commercial coatings…”

Section: Resultsmentioning

confidence: 99%

“…Nanoscale fillers provide high specific surface area and barrier resistance against delamination and hence are being widely used as reinforcing agents to enhance the potential applications of polymer coatings . Various literatures have reported about the fabrication of EP‐PDMS polymer coatings reinforced with fumed nanosilica, layered silicates, alumina, TiO 2 , CuO, CTAB‐CuO, barium sulfate, tourmaline, nano calcium carbonate, starch, and coal tar . Among them, zinc oxide (ZnO) nanoparticle is well known for its high chemical stability, excellent electrochemical coupling coefficient, outstanding photo stability, catalytic activity, and effective antibacterial properties .…”

Section: Introductionmentioning

confidence: 99%

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Development of multifunctional polydimethylsiloxane (PDMS)‐epoxy‐zinc oxide nanocomposite coatings for marine applications

Verma

Das²,

Mohanty

et al. 2019

Polymers for Advanced Techs

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Multifunctional epoxy-polydimethylsiloxane nanocomposite coatings with antifouling and anticorrosion characteristics have been developed via in situ polymerization method at different loading (1, 3, and 6.5 wt.%) of ZnO nanoparticles to cater marine applications. A detailed comparative analysis has been carried out between epoxy-polydimethylsiloxane control (EPC) and ZnO-reinforced coatings to determine the influence of ZnO loading on various properties. The incorporation of ZnO in EPC led to increase in root mean square (RMS) roughness to 126.75 nm and improved hydrophobicity showing maximum contact angle of 123.5°with low surface energy of 19.75 mN/m of nanocomposite coating as compared with control coating. The differential scanning calorimetry (DSC) result indicated improved glass transition temperature of nanocomposite coatings with highest T g obtained at 83.69°C in case of 1 wt.% loading of ZnO. The increase in hydrophobicity of the system was accompanied by upgraded anticorrosion performance exhibiting 98.8% corrosion inhibition efficiency (CIE) as compared with control coating and lower corrosion rate of 0.12 × 10 −3 mm/year. The Taber abrasion resistance and pull-off adhesion strength results indicated an increment of 34.7% and 150.7%, respectively, in case of nanocomposite coating as compared with the control coating.The hardness of nanocomposite coatings was also improved, and maximum hardness was found to be 65.75 MPa for nanocomposite coating with 1 wt.% of ZnO.Our study showed that the nanocomposite coating was efficient in inhibiting accumulation of marine bacteria and preventing biofouling for more than 8 months. The developed environment-friendly and efficient nanocomposite material has a promising future as a high-performance anticorrosive and antifouling coating for marine applications. | MATERIALSEP resin, i.e., DGEBA, Araldite GY-251 with EP equivalent value ranging from 180 to 189 g/eq and EP value of 5.30 to 5.55 eq/Kg, and hardener triethylene tetra amine (TETA, Aradur HY-951) with amine value 24.04 g/eq were purchased from M/s. Huntsman Int Pvt Ltd, Mumbai, India. PDMS-hydroxy terminated (h-PDMS) with dynamic viscosity of 25 centistokes and density value 0.95 g/mL at temperature of 25°C and APTES (3-aminopropyltriethoxysilane), assay (99%) and density value of 0.946 g/mL at 25°C (lit.) were procured from M/s. Sigma Aldrich Pvt Ltd, India. ZnO nanoparticle with average particle size of approximately 20 nm were purchased from M/s. Sisco

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Section: Resultssupporting

confidence: 90%

Section: Resultsmentioning

confidence: 95%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Development of multifunctional polydimethylsiloxane (PDMS)‐epoxy‐zinc oxide nanocomposite coatings for marine applications

Verma

Das²,

Mohanty

et al. 2019

Polymers for Advanced Techs

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“…Recently, many new protective coatings have been developed; they could be based on graphene [47], hybrid based on graphene oxide (GO) and reduced graphene oxide [22,45,46], polypyrrole [50], polyaniline/polyvinyl chloride blended [51], nano-hybrid epoxy coatings [52], bio-based polymers [53] or inorganic: siloxane based sol-gel coatings [54], silicatitaniahybrid [55] and iron aluminide coating [56]. Some of them can be used to form the superhydrophobicity surface [48,49,[54][55][56][57][58][59]61].…”

Section: Corrosion Protection Methodsmentioning

confidence: 99%

Organic Corrosion Inhibitors

Brycki¹,

Kowalczyk²,

Szulc³

et al. 2018

Corrosion Inhibitors, Principles and Recent Applications

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Organic corrosion inhibitors are one of the five ways, besides material selection, design, cathodic protection and coatings, to protect materials against corrosion. Corrosion is an ubiquitous phenomena that deteriorates all materials, metals, plastics, glass and concrete. The costs of corrosion are tremendous and amounts to 4.0% of gross domestic product (GDP) in USA. The similar losses of GDP are noted in all countries around the world. At this point of time, there is no way to completely stop the corrosion processes. Some new solutions can only slow this process. Organic corrosion inhibitors are widely used in industry because of their effectiveness at wide range of temperatures, compatibility with protected materials, good solubility in water, low costs and relatively low toxicity. Organic corrosion inhibitors adsorb on the surface to form protective film which displace water and protect it against deteriorating. Effective organic corrosion inhibitors contain nitrogen, oxygen, sulfur and phosphorus with lone electron pairs as well can contain structural moieties with π-electrons that interact with metal favoring the adsorption process. This review presents mechanisms and monitoring of corrosion, laboratory methods for corrosion study, relationship between structure and efficacy of corrosion inhibitions, theoretical approach to design new inhibitors and some aspects of biocorrosion.

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