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Wong LN, Jones SD, Wood K, de Campo L, Darwish T, Moir M, Li H, Segalman RA, Warr GG, Atkin R. Polycation radius of gyration in a polymeric ionic liquid (PIL): the PIL melt is not a theta solvent. Phys Chem Chem Phys 2022; 24:4526-4532. [PMID: 35119064 DOI: 10.1039/d1cp05354j] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The conformation of the polycation in the prototypical polymeric ionic liquid (PIL) poly(3-methyl-1-aminopropylimidazolylacrylamide) bis(trifluoromethylsulfonyl)imide (poly(3MAPIm)TFSI) was probed using small-angle neutron scattering (SANS) and ultra-small-angle neutron scattering (USANS) at 25 °C and 80 °C. Poly(3MAPIm)TFSI contains microvoids which lead to intense low q scattering that can be mitigated using mixtures of hydrogen- and deuterium-rich materials, allowing determination of the polycation conformation and radius of gyration (Rg). In the pure PIL, the polycation adopts a random coil conformation with Rg = 52 ± 0.5 Å. In contrast to conventional polymer melts, the pure PIL is not a theta solvent for the polycation. The TFSI- anions, which comprise 48% v/v of the PIL, are strongly attracted to the polycation and act like small solvent molecules which leads to chain swelling analogous to an entangled, semi-dilute, or concentrated polymer solution in a good solvent.
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Affiliation(s)
- Lucas N Wong
- School of Molecular Sciences, The University of Western Australia, Crawley, Perth 6009, Australia.
| | - Seamus D Jones
- Chemical Engineering Department and Materials Department, University of California, Santa Barbara, California 93106, USA
| | - Kathleen Wood
- Australian Centre for Neutron Scattering, Australian Nuclear Science and Technology Organisation, New Illawarra Road, Lucas Heights, NSW 2234, Australia
| | - Liliana de Campo
- Australian Centre for Neutron Scattering, Australian Nuclear Science and Technology Organisation, New Illawarra Road, Lucas Heights, NSW 2234, Australia
| | - Tamim Darwish
- National Deuteration Facility (NDF), ANSTO, Lucas Heights, NSW 2234, Australia
| | - Michael Moir
- National Deuteration Facility (NDF), ANSTO, Lucas Heights, NSW 2234, Australia
| | - Hua Li
- School of Molecular Sciences, The University of Western Australia, Crawley, Perth 6009, Australia.
| | - Rachel A Segalman
- Chemical Engineering Department and Materials Department, University of California, Santa Barbara, California 93106, USA
| | - Gregory G Warr
- School of Chemistry and University of Sydney Nano Institute, The University of Sydney, Sydney, NSW 2006, Australia
| | - Rob Atkin
- School of Molecular Sciences, The University of Western Australia, Crawley, Perth 6009, Australia.
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2
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Le CMQ, Vidal L, Schmutz M, Chemtob A. Droplet nucleation in miniemulsion thiol–ene step photopolymerization. Polym Chem 2021. [DOI: 10.1039/d1py00139f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Reaction parameters, such as droplet size, initiator solubility and monomer solubility, which are important in favouring droplet nucleation in a miniemulsion thiol–ene step polymerization are reviewed.
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Affiliation(s)
| | - Loïc Vidal
- Université de Haute-Alsace
- CNRS
- IS2M UMR7361
- F-68100 Mulhouse
- France
| | - Marc Schmutz
- Université de Strasbourg
- CNRS
- Institut Charles Sadron
- 67000 Strasbourg
- France
| | - Abraham Chemtob
- Université de Haute-Alsace
- CNRS
- IS2M UMR7361
- F-68100 Mulhouse
- France
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3
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Eduok U. Niobia Nanofiber-Reinforced Protective Niobium Oxide/Acrylate Nanocomposite Coatings. ACS OMEGA 2020; 5:30716-30728. [PMID: 33283120 PMCID: PMC7711932 DOI: 10.1021/acsomega.0c04948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Accepted: 11/05/2020] [Indexed: 06/12/2023]
Abstract
In the present study, the corrosion resistance of a new niobium oxide/acrylate hybrid nanocomposite coating doped with niobia nanofibers is investigated. Nanofibers were initially synthesized from niobium(V) chloride precursor in a novel autoclave approach before fabricating the base coating from a two-step process involving the syntheses of acrylate resin via free radical polymerization and niobium oxide gel from niobium ethoxide via a sol-gel technique. Variants of the synthesized nanocomposite coating were incorporated with varying concentrations of niobia nanofibers before spin-coating on Q235 steel substrates to inhibit corrosive electrolytic ion percolation and further enhance corrosion resistance when treated with chloride-enriched corrosive media. The corrosion resistance of these nanocomposite coatings increased with nanofiber content up to an optimum concentration due to the corrosion-inhibiting and protective effects of niobium barrier layers within these coatings. The presence of the niobia nanofibers also promoted improved surface contact angle and toughened mechanical strengths.
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Affiliation(s)
- Ubong Eduok
- . Tel: +1 (306) 966 7752. Fax: +1 (306) 966 5427
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4
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El Nagy HA, H. El Tamany E, Ashour H, El-Azabawy OE, Zaki EG, Elsaeed SM. Polymeric Ionic Liquids Based on Benzimidazole Derivatives as Corrosion Inhibitors for X-65 Carbon Steel Deterioration in Acidic Aqueous Medium: Hydrogen Evolution and Adsorption Studies. ACS OMEGA 2020; 5:30577-30586. [PMID: 33283106 PMCID: PMC7711703 DOI: 10.1021/acsomega.0c04505] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 11/04/2020] [Indexed: 06/12/2023]
Abstract
Ionic liquids have significantly enhanced ecofriendly benefits compared to the traditional inhibitors. In the present work, new four polymeric ionic liquids based on benzoimidazole derivatives were synthesized through the reaction of 2-styryl-1H-benzo[d]imidazole with alkyl halide to form PIL1. Then, Cl- anions were exchanged with different anions through the neutralization reaction to form other investigated polymers. Their structures were chemically elucidated using Fourier transform infrared spectroscopy, 1H NMR, and 13C NMR. Their influence on carbon steel (CS) as corrosion inhibitors has been checked with dielectric spectroscopy in addition to potentiodynamic polarization curves. It was found that the percentage of inhibition efficiency increases as inhibitor's concentrations increase, suggesting a decrease in the rate of CS corrosion. Additionally, the hydrogen evolution rate controlled by the four polymers was monitored. Addition of the prepared polymers lessened the rate of generation of hydrogen as the inhibitor's concentrations augmented. Scanning electric electron microscopy in addition to energy-dispersive X-ray diffraction has proved the morphology of the CS surface as well as the formed protective film.
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Affiliation(s)
- Hala A. El Nagy
- Chemistry Department,
Faculty of Science, Suez Canal
University, Ismailia 41522, Egypt
| | - ElSayed H. El Tamany
- Chemistry Department,
Faculty of Science, Suez Canal
University, Ismailia 41522, Egypt
| | - Hana Ashour
- Chemistry Department,
Faculty of Science, Suez Canal
University, Ismailia 41522, Egypt
| | | | - Elsayed G. Zaki
- Egyptian
Petroleum Research Institute (EPRI), Nasr City, Cairo 11727, Egypt
| | - Shimaa M. Elsaeed
- Egyptian
Petroleum Research Institute (EPRI), Nasr City, Cairo 11727, Egypt
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5
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Affiliation(s)
- Olivia Z. Durham
- Department of Chemistry and Biomolecular Science, and Center for Advanced Materials Processing, Clarkson University, Potsdam, New York, USA
| | - Devon A. Shipp
- Department of Chemistry and Biomolecular Science, and Center for Advanced Materials Processing, Clarkson University, Potsdam, New York, USA
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7
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Effect of 1-(3-phenoxypropyl) pyridazin-1-ium bromide on steel corrosion inhibition in acidic medium. J Colloid Interface Sci 2019; 541:418-424. [DOI: 10.1016/j.jcis.2019.01.113] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 01/24/2019] [Accepted: 01/25/2019] [Indexed: 11/22/2022]
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8
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Chakraborty S, Ramakrishnan S. Surface-Functionalized Polystyrene Latexes Using Itaconate-Based Surfmers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:11729-11737. [PMID: 30193459 DOI: 10.1021/acs.langmuir.8b01708] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Itaconic acid was readily transformed to a series of amphiphilic diesters via stepwise esterification of itaconic anhydride; the diesters carry one alkyl (cetyl or octyl) group and either a PEG, glyceryl, or dopamine segment. These diesters were used as surfmers for the preparation of polystyrene (PS) emulsions, with the expectation that the surface of the emulsion particles would carry PEG, glyceryl or dopamine units. NMR spectroscopic studies revealed that the surfmers were covalently incorporated into the polystyrene chains; furthermore, NMR tube polymerization experiments also confirmed that when the PEG surfmer was used, the PEG segments are indeed present on the surface of the emulsion particles. The size of the PEGlyated PS emulsions was readily varied from 35 to 140 nm by changing the mole fraction of surfmer used. In the case of the glyceryl and dopamine carrying surfmers, an octyl unit was used as the hydrophobic segment to ensure appropriate hydrophobic-hydrophilic balance; it was noticed that significantly larger mole fractions of the surfmers were required (15-20 mol %) to generate stable emulsions with particle sizes of about 150 nm. The PS emulsions carrying dopamine units on the surface were found to adhere to glass surfaces; thus suggesting that such "sticky" emulsion particles could be used to functionalize different types of surfaces. Finally, itaconate diesters bearing cetyl and perfluorooctyl segments were also prepared and shown to copolymerize with styrene to generate fluoroalkyl-enriched PS copolymers; these were used to generate hydrophobic coatings, with water contact angles of over 120°. Thus, itaconate-based surfmers are readily accessible alternatives for the preparation of emulsions with tailored size and surface functionality.
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Affiliation(s)
- Saheli Chakraborty
- Department of Inorganic and Physical Chemistry , Indian Institute of Science , Bangalore 560012 , India
| | - S Ramakrishnan
- Department of Inorganic and Physical Chemistry , Indian Institute of Science , Bangalore 560012 , India
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9
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Li Z, Wang X, Zhang Y, Jing C. Enhancing the Corrosion Resistance of Epoxy Coatings by Impregnation with a Reduced Graphene Oxide-Hydrophobic Ionic Liquid Composite. ChemElectroChem 2018. [DOI: 10.1002/celc.201800725] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- ZeShan Li
- Key Laboratory of Sensor Analysis of Tumor Marker of Education Ministry; Key Laboratory of Biochemical Analysis of Shandong; Key Laboratory of Life Analytical Chemistry of the 13th Five-Year University, College of Chemistry and Molecular Engineering; Qingdao University of Science and Technology; 53# Zhengzhou Road Qingdao 266042 China
| | - XinXing Wang
- Key Laboratory of Sensor Analysis of Tumor Marker of Education Ministry; Key Laboratory of Biochemical Analysis of Shandong; Key Laboratory of Life Analytical Chemistry of the 13th Five-Year University, College of Chemistry and Molecular Engineering; Qingdao University of Science and Technology; 53# Zhengzhou Road Qingdao 266042 China
| | - YuBing Zhang
- Key Laboratory of Sensor Analysis of Tumor Marker of Education Ministry; Key Laboratory of Biochemical Analysis of Shandong; Key Laboratory of Life Analytical Chemistry of the 13th Five-Year University, College of Chemistry and Molecular Engineering; Qingdao University of Science and Technology; 53# Zhengzhou Road Qingdao 266042 China
| | - CuiJie Jing
- Key Laboratory of Sensor Analysis of Tumor Marker of Education Ministry; Key Laboratory of Biochemical Analysis of Shandong; Key Laboratory of Life Analytical Chemistry of the 13th Five-Year University, College of Chemistry and Molecular Engineering; Qingdao University of Science and Technology; 53# Zhengzhou Road Qingdao 266042 China
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10
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Wood K, Mata JP, Garvey CJ, Wu CM, Hamilton WA, Abbeywick P, Bartlett D, Bartsch F, Baxter P, Booth N, Brown W, Christoforidis J, Clowes D, d'Adam T, Darmann F, Deura M, Harrison S, Hauser N, Horton G, Federici D, Franceschini F, Hanson P, Imamovic E, Imperia P, Jones M, Kennedy S, Kim S, Lam T, Lee WT, Lesha M, Mannicke D, Noakes T, Olsen SR, Osborn JC, Penny D, Perry M, Pullen SA, Robinson RA, Schulz JC, Xiong N, Gilbert EP. QUOKKA, the pinhole small-angle neutron scattering instrument at the OPAL Research Reactor, Australia: design, performance, operation and scientific highlights. J Appl Crystallogr 2018. [DOI: 10.1107/s1600576718002534] [Citation(s) in RCA: 111] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
QUOKKA is a 40 m pinhole small-angle neutron scattering instrument in routine user operation at the OPAL research reactor at the Australian Nuclear Science and Technology Organisation. Operating with a neutron velocity selector enabling variable wavelength, QUOKKA has an adjustable collimation system providing source–sample distances of up to 20 m. Following the large-area sample position, a two-dimensional 1 m2position-sensitive detector measures neutrons scattered from the sample over a secondary flight path of up to 20 m. Also offering incident beam polarization and analysis capability as well as lens focusing optics, QUOKKA has been designed as a general purpose SANS instrument to conduct research across a broad range of scientific disciplines, from structural biology to magnetism. As it has recently generated its first 100 publications through serving the needs of the domestic and international user communities, it is timely to detail a description of its as-built design, performance and operation as well as its scientific highlights. Scientific examples presented here reflect the Australian context, as do the industrial applications, many combined with innovative and unique sample environments.
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11
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Qian W, Texter J, Yan F. Frontiers in poly(ionic liquid)s: syntheses and applications. Chem Soc Rev 2018; 46:1124-1159. [PMID: 28180218 DOI: 10.1039/c6cs00620e] [Citation(s) in RCA: 500] [Impact Index Per Article: 83.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We review recent works on the synthesis and application of poly(ionic liquid)s (PILs). Novel chemical structures, different synthetic strategies and controllable morphologies are introduced as a supplement to PIL systems already reported. The primary properties determining applications, such as ionic conductivity, aqueous solubility, thermodynamic stability and electrochemical/chemical durability, are discussed. Furthermore, the near-term applications of PILs in multiple fields, such as their use in electrochemical energy materials, stimuli-responsive materials, carbon materials, and antimicrobial materials, in catalysis, in sensors, in absorption and in separation materials, as well as several special-interest applications, are described in detail. We also discuss the limitations of PIL applications, efforts to improve PIL physics, and likely future developments.
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Affiliation(s)
- Wenjing Qian
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China.
| | - John Texter
- School of Engineering Technology, Eastern Michigan University, Ypsilanti, MI 48197, USA
| | - Feng Yan
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China.
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12
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Rehm C, de Campo L, Brûlé A, Darmann F, Bartsch F, Berry A. Design and performance of the variable-wavelength Bonse–Hart ultra-small-angle neutron scattering diffractometer KOOKABURRA at ANSTO. J Appl Crystallogr 2018. [DOI: 10.1107/s1600576717016879] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The double-crystal ultra-small-angle neutron scattering (USANS) diffractometer KOOKABURRA at ANSTO was made available for user experiments in 2014. KOOKABURRA allows the characterization of microstructures covering length scales in the range of 0.1–10 µm. Use of the first- and second-order reflections coming off a doubly curved highly oriented mosaic pyrolytic graphite premonochromator at a fixed Bragg angle, in conjunction with two interchangeable pairs of Si(111) and Si(311) quintuple-reflection channel-cut crystals, permits operation of the instrument at two individual wavelengths, 4.74 and 2.37 Å. This unique feature among reactor-based USANS instruments allows optimal accommodation of a broad range of samples, both weakly and strongly scattering, in one sample setup. The versatility and capabilities of KOOKABURRA have already resulted in a number of research papers, clearly demonstrating that this instrument has a major impact in the field of large-scale structure determination.
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13
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Mirjafari A. Ionic liquid syntheses via click chemistry: expeditious routes toward versatile functional materials. Chem Commun (Camb) 2018; 54:2944-2961. [DOI: 10.1039/c8cc00372f] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The application of click reaction (e.g. CuAAC, thiol–X, oxime formation and nucleophilic ring opening) has recently begun to draw attention for efficient and robust synthesis of new functional ionic liquids, requiring minimal purification.
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Affiliation(s)
- Arsalan Mirjafari
- Department of Chemistry and Physics
- Florida Gulf Coast University
- Fort Myers
- USA
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14
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Elsaeed S, El Tamany ESH, Ashour H, Zaki EG, Khamis EA, El Nagy HA. Corrosion and hydrogen evolution rate control for X-65 carbon steel based on chitosan polymeric ionic liquids: experimental and quantum chemical studies. RSC Adv 2018; 8:37891-37904. [PMID: 35558626 PMCID: PMC9089831 DOI: 10.1039/c8ra05444d] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 10/30/2018] [Indexed: 11/21/2022] Open
Abstract
The corrosion performance of carbon steel was tested in four polymeric ionic liquids (PILs) that differed only in the fatty acid linked to the chitosan (CS) amine group.
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Affiliation(s)
- S. M. Elsaeed
- Egyptian Petroleum Research Institute (EPRI)
- Cairo
- Egypt
| | | | - H. Ashour
- Chemistry Department
- Faculty of Science
- Suez Canal University
- Ismailia
- Egypt
| | - E. G. Zaki
- Egyptian Petroleum Research Institute (EPRI)
- Cairo
- Egypt
| | - E. A. Khamis
- Egyptian Petroleum Research Institute (EPRI)
- Cairo
- Egypt
| | - H. A. El Nagy
- Chemistry Department
- Faculty of Science
- Suez Canal University
- Ismailia
- Egypt
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15
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Dwivedi D, Lepkova K, Becker T. Emerging surface characterization techniques for carbon steel corrosion: a critical brief review. Proc Math Phys Eng Sci 2017; 473:20160852. [PMID: 28413351 PMCID: PMC5378249 DOI: 10.1098/rspa.2016.0852] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Accepted: 02/08/2017] [Indexed: 11/12/2022] Open
Abstract
Carbon steel is a preferred construction material in many industrial and domestic applications, including oil and gas pipelines, where corrosion mitigation using film-forming corrosion inhibitor formulations is a widely accepted method. This review identifies surface analytical techniques that are considered suitable for analysis of thin films at metallic substrates, but are yet to be applied to analysis of carbon steel surfaces in corrosive media or treated with corrosion inhibitors. The reviewed methods include time of flight-secondary ion mass spectrometry, X-ray absorption spectroscopy methods, particle-induced X-ray emission, Rutherford backscatter spectroscopy, Auger electron spectroscopy, electron probe microanalysis, near-edge X-ray absorption fine structure spectroscopy, X-ray photoemission electron microscopy, low-energy electron diffraction, small-angle neutron scattering and neutron reflectometry, and conversion electron Moessbauer spectrometry. Advantages and limitations of the analytical methods in thin-film surface investigations are discussed. Technical parameters of nominated analytical methods are provided to assist in the selection of suitable methods for analysis of metallic substrates deposited with surface films. The challenges associated with the applications of the emerging analytical methods in corrosion science are also addressed.
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Affiliation(s)
- D. Dwivedi
- Department of Chemical Engineering, Curtin Corrosion Engineering Industry Centre, Western Australia, Australia
| | - K. Lepkova
- Department of Chemical Engineering, Curtin Corrosion Engineering Industry Centre, Western Australia, Australia
| | - T. Becker
- Nanochemistry Research Institute, Department of Chemistry, Faculty of Science and Engineering, Curtin University, Western Australia, Australia
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