Production, measurements and anticorrosion properties of electroactive polyimide/tin oxide nanocomposites

Malav, Jeetendra Kumar; Rathod, Ramesh Chandra; Umare, Suresh S.; Patil, Awanikumar P.; Ghugal, Sachin G.

doi:10.1088/2053-1591/ab0925

Cited by 9 publications

(3 citation statements)

References 31 publications

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“…Aromatic polyimides (PIs) exhibiting extremely high thermal and chemical stability, as well as outstanding mechanical and insulating properties, have found widespread use in numerous applications spanning from microelectronics to aerospace engineering [ 1 , 2 , 3 ]. However, the scope of PIs’ application could be substantially expanded, taking into account the cutting-edge techniques for fabrication of polymer-based nanocomposites doped with various inorganic species, i.e., metal oxides, Fe 3 O 4 [ 4 ], SnO 2 [ 5 ], NiO [ 6 ], TiO 2 [ 7 ], Al 2 O 3 [ 8 ], etc. An important advantage of nanocomposites in comparison with conventional multicomponent materials is that nanoparticles provide an increase in the matrix-filler contact area.…”

Section: Introductionmentioning

confidence: 99%

Polyimide-Based Nanocomposites with Binary CeO2/Nanocarbon Fillers: Conjointly Enhanced Thermal and Mechanical Properties

et al. 2020

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To design novel polymer materials with optimal properties relevant to industrial usage, it would seem logical to modify polymers with reportedly good functionality, such as polyimides (PIs). We have created a set of PI-based nanocomposites containing binary blends of CeO2 with carbon nanoparticles (nanocones/discs or nanofibres), to improve a number of functional characteristics of the PIs. The prime novelty of this study is in a search for a synergistic effect amidst the nanofiller moieties regarding the thermal and the mechanical properties of PIs. In this paper, we report on the structure, thermal, and mechanical characteristics of the PI-based nanocomposites with binary fillers. We have found that, with a certain composition, the functional performance of a material can be substantially improved. For example, a PI containing SO2-groups in its macrochains not only had its thermal stability enhanced (by ~20 °C, 10% weight loss up to 533 °C) but also had its stiffness increased by more than 10% (Young’s modulus as high as 2.9–3.0 GPa) in comparison with the matrix PI. In the case of a PI with no sulfonic groups, binary fillers increased stiffness of the polymer above its glass transition temperature, thereby widening its working temperature range. The mechanisms of these phenomena are discussed. Thus, this study could contribute to the design of new composite materials with controllable and improved functionality.

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Section: Introductionmentioning

confidence: 99%

Polyimide-Based Nanocomposites with Binary CeO2/Nanocarbon Fillers: Conjointly Enhanced Thermal and Mechanical Properties

et al. 2020

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“…It is a semiconductor material with a unique characteristic of high optical transparency in the visible range of electromagnetic radiation and low electrical resistance [3,4]. Tin dioxide has numerous applications, serving as a gas-trapping layer in various gas sensors [5,6], an effective photoanode [7,8], a protective coating against corrosion [9,10], an antibacterial coating [11,12], an anode for high-performance lithium-ion batteries [13,14] and for various other purposes. Tin dioxide also has medical applications, such as serving as a glucose sensor [15,16].…”

Section: Introductionmentioning

confidence: 99%

Influence of Annealing Time on the Optical and Electrical Properties of Tin Dioxide-Based Coatings

Dmitriyeva,

Lebedev,

Bondar

et al. 2024

Eurasian Chem.-Technol. J.

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This study investigates the effects of annealing time on the optical and electrical properties of tin dioxide coatings, specifically surface resistivity and specific conductivity. The thickness of the film, as well as its density and void density, were calculated from the interference peaks. The results suggest that as the duration of annealing increases, the density of the film decreases and the void volume increases. The lack of interference peaks in the transmission spectra of films containing additives is caused by the development of dendritic structures within the films. As the annealing duration is extended to 6 h, the surface resistivity increases, resulting in a decrease in the specific conductivity of all films. As the duration of annealing increases, the surface resistivity of the films studied increases and therefore their overall quality decreases.

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“…Polymer/filler nanocomposites have received significant attention because of their excellent electrical, mechanical, thermal, barrier, and anticorrosion properties [1]. Nanofillers such as clay [2,3], silica [4,5], metallic oxide [6,7], boron nitride [8,9], ZrP [10,11], CNT [12] and alumina [13] have been conventionally incorporated within a polymer matrix or coated on the surface of the polymer film to improve their barrier and anticorrosion properties [14][15][16]. Recently, graphene, graphene oxide (GO), and reduced graphene oxide (rGO) have been demonstrated to have a strong anticorrosion ability because of their layered structure.…”

Section: Introductionmentioning

confidence: 99%

Transparency anticorrosion coatings prepared from alumina-covered graphene oxide/polyimide nanocomposites

Lai¹,

Huang²,

Tseng³

et al. 2019

Express Polym. Lett.

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In this study, a novel alumina-covered graphene oxide/polyimide (AlGO/PI) nanocomposite was developed as an anticorrosion coating material. The hydroxyl groups on GO reacted with aluminum isopropoxide via a sol-gel process to yield AlGO nanosheets. The characterization and structure were confirmed by Fourier transform infrared spectrometry, X-ray photoelectron spectroscopy, field emission scanning electron microscopy, and field emission transmission electron microscopy. Subsequently, GO and AlGO were incorporated into a PI matrix, leading to the formation of GO/PI and AlGO/PI nanocomposites. Well-dispersed AlGO nanosheets in the PI matrix acted as effective additives to enhance the water barrier properties of GO/PI (58 g/(m 2 •day)) and AlGO/PI (43 g/(m 2 •day)) coatings. Most importantly, the resultant AlGO/PI films exhibited excellent optical transparency (>75%) and anticorrosion properties. Electrochemical measurements of corrosion potential, polarization resistance, and corrosion current as well as electrochemical impedance spectroscopy confirmed that the AlGO/PI nanocomposites exhibited better anticorrosion properties than GO/PI nanocomposites. This is likely because the insulating layer of alumina on GO can isolate the charge transfer pathway between GO and the metal substrates, leading to improved anticorrosion behavior.

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Production, measurements and anticorrosion properties of electroactive polyimide/tin oxide nanocomposites

Cited by 9 publications

References 31 publications

Polyimide-Based Nanocomposites with Binary CeO2/Nanocarbon Fillers: Conjointly Enhanced Thermal and Mechanical Properties

Polyimide-Based Nanocomposites with Binary CeO2/Nanocarbon Fillers: Conjointly Enhanced Thermal and Mechanical Properties

Influence of Annealing Time on the Optical and Electrical Properties of Tin Dioxide-Based Coatings

Transparency anticorrosion coatings prepared from alumina-covered graphene oxide/polyimide nanocomposites

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