Article
Nanoscience & Nanotechnology
Xiao-Jing Guo, Duo Zhang, Chao-Hua Xue, Bing-Ying Liu, Meng-Chen Huang, Hui-Di Wang, Xing Wang, Fu-Quan Deng, Yong-Ping Pu, Qiu-Feng An
Summary: In this study, a simple and efficient method was proposed to construct robust superhydrophobic coatings by spray-coating a composite suspension on substrates pretreated with an EP base-coating. The obtained coating exhibited excellent superhydrophobicity and showed outstanding mechanical stability and self-healing capacity. The method is simple, with commercially available materials, and is expected to have wide applications in outdoor settings.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Ceramics
Jialin Yang, Aiying Chen, Fang Liu, Lijian Gu, Xiaofeng Xie, Zhiying Ding
Summary: The thermal stability, hydrophobicity, and corrosion resistance of the PDMS-ZrO2 coatings are substantially improved by introducing ZrO2 nanoparticles. Depending on the ZrO2 content, the PDMS-ZrO2 hybrids exhibit superior corrosion resistance.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Negar Mehri Ghahfarokhi, Behrooz Shayegh Broujeny, Amin Hakimizad, Ali Doostmohammadi
Summary: To improve the corrosion behavior of a magnesium alloy, a two-step coating process involving plasma electrolytic oxidation coating (PEO) and the immersion method was used. The PEO coating contained different phases, while the PDMS coating formed a non-porous layer. The corrosion tests showed that the PEO/PDMS hybrid coating effectively reduced the corrosion rates of the magnesium alloy.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Xin Liang, Cheng Hua, Mingrui Zhang, Yu Zheng, Shijie Song, Meng Cai, Yu Huang, Can He, Xiaoqiang Fan
Summary: In this study, nano-alumina modified by polyethyleneimine (PEI) was added into epoxy coatings to enhance their anticorrosion properties. The modified epoxy nanocomposite coating showed superior corrosion resistance compared to pure epoxy coatings.
Article
Chemistry, Applied
Qi Guo, Tengle Wang, Tian C. Zhang, Like Ouyang, Shaojun Yuan
Summary: Superhydrophobic double layered MgAl-LDH/epoxy (DMALE) composite coatings were successfully fabricated on magnesium alloys through hydrothermal synthesis and spraying methods. The as-prepared DMALE coating exhibited superior superhydrophobic and self-cleaning properties, as well as good anti-corrosion property, chemical stability, and high abrasion resistance. This large-scale prepared composite coating shows great potential for corrosion protection of magnesium alloys.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Chemistry, Applied
Jiawei Zhuang, Yanfei Lin, Guangping An, Xiaoqiang Liu
Summary: This study reports the development of a superlubricious epoxy resin composite coating (EP/PDMS) containing polydimethylsiloxane (PDMS) for the first time. PDMS self-aggregated into nanoparticles in the epoxy resin matrix, enhancing the tensile toughness of the coatings. The EP/PDMS composite coatings exhibited stable superlubricity and high wear resistance when sliding against different bearing materials. Remarkably, under ambient air with a high relative humidity of 70%, the EP composite coating with a small content of PDMS (3.0 wt%) achieved an exceptionally low friction coefficient of 0.007, and the average wear rate of the EP/PDMS composite coating was as low as 2.76 x 10-7 mm3/N.m despite its low hardness.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Materials Science, Coatings & Films
Wufang Yang, Weibin Feng, Zutai Liao, Yanping Yang, Guolong Miao, Bo Yu, Xiaowei Pei
Summary: A novel siloxane corrosion inhibitor precursor was successfully prepared and used to prepare molecular engineered nanofiller (NPInh) for epoxy composites, improving the dispersion and corrosion resistance of the coatings significantly.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Miroslav Kohl, Fouzy Alafid, Karolina Bostikova, Marek Bouska, Anna Krejcova, Jan Svoboda, Stanislav Slang, Ludmila Michalickova, Andrea Kalendova, Radim Hrdina, Ladislav Burgert, Eva Schmidova, Pravin P. Deshpande, Abhijit A. Bhopale
Summary: This work investigates the potential of synthesized magnesium complex dyes to reduce zinc content in organic coatings while maintaining or increasing their anticorrosive efficiency.
Article
Chemistry, Applied
Seyyed Arash Haddadi, Eiman Alibakhshi, Akram Labani Motlagh, Ahmad S. A. Ramazani, Mohammad Ghaderi, Bahram Ramezanzadeh, Mohammad Mahdavian, Mohammad Arjmand
Summary: This study investigated the effects of UCZP and MCZP nanopigments on the rheological, mechanical, and corrosion protection performance of EP coatings. The results showed that silanization of MCZP NPs improved their contact angle and corrosion resistance.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Chemistry, Applied
Yuntian Liao, Rongtao Zhu, Wenjun Zhang, Zhuang Liu, Haiyang Zhu, Yang Sun
Summary: Graphene has great potential for use in anti-corrosion coatings due to its excellent properties, but traditional synthesis methods are time-consuming, energy-consuming, and environmentally polluting. This study successfully synthesized graphene using flash Joule heating, which showed improved properties compared to reduced graphene oxide. The anti-corrosion coatings prepared with this graphene demonstrated strong corrosion resistance in salt spray corrosion tests.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Electrochemistry
A. Maria Osipenko, S. Dzmitry Kharytonau, Aliaksandr A. Kasach, Jacek Ryl, Janusz Adamiec, I. Irina Kurilo
Summary: This study investigated the corrosion inhibition of the AZ31 magnesium alloy in NaCl solutions containing different concentrations of sodium molybdate inhibitor. Various experimental methods were used to examine the mechanism of molybdate corrosion inhibition. The results showed that Na2MoO4 inhibitor provided reliable inhibition at high concentrations (150 mM). Surface examination confirmed the formation of a protective surface layer of mixed Mo (VI, V, IV) species.
ELECTROCHIMICA ACTA
(2022)
Article
Biochemistry & Molecular Biology
Iryna Kozina, Halina Krawiec, Maria Starowicz, Magdalena Kawalec
Summary: Spin coating technique was used to deposit chitosan coatings on the surface of Mg20Zn magnesium alloy, resulting in increased corrosion resistance by forming CaSiO3 and Ca-3(PO4)(2) compounds on its surface. Corrosion rate was reduced from 3.2 mm/year to 1.2 mm/year for uncoated and coated substrates, respectively.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Materials Science, Multidisciplinary
Anawati Anawati, Medio Febby Fitriana, Muhammad Dikdik Gumelar
Summary: The bilayer anodic film/beeswax-colophony structure effectively improved the corrosion resistance of magnesium alloy surface, showing a significant decrease in corrosion current density and an increase in film resistance.
Article
Chemistry, Applied
Qing Cao, Ibukun Oluwoye, Thunyaluk Pojtanabuntoeng, Hanan Farhat, Mariano Iannuzzi
Summary: Corrosion under insulation (CUI) is a critical issue in the petrochemical industry. Organic coatings used as the last barrier in CUI systems can fail under high operating temperatures, requiring performance evaluations. This study investigated the degradation of a polyamine-cured epoxy coating under accelerated laboratory tests and proposed a comprehensive evaluation protocol. The results showed thermal and chemical degradation of the coating, providing insights into predicting the coating's service lifetime.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Materials Science, Multidisciplinary
Haoyi Qiu, Anna Gapeeva, Iris Hoelken, Soeren Kaps, Rainer Adelung, Martina J. Baum
Summary: An environmentally friendly fouling-release coating with high mechanical strength and good adhesion to substrates was developed using a simple blending approach, which showed promising performance in biofouling control.
MATERIALS & DESIGN
(2022)
Article
Chemistry, Physical
Ubong Eduok, Omar Faye, Jerzy Szpunar, Mazen Khaled
Summary: The study synthesized 2-mercaptobenzothiazole (MBT) through a formation scheme involving a catalyzed reaction between aminophenyl disulfide and metal sulfide under N-2 atmosphere. MBT showed good corrosion inhibition properties in acidic medium, forming mercaptobenzothiazole films on Zn substrate, with higher concentrations leading to better corrosion inhibition effects and reduced corrosion current density.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Engineering, Biomedical
Ubong Eduok, Heloisa Camara, Amira Abdelrasoul, Ahmed Shoker
Summary: The study explores the use of novel zwitterionic polymers to improve the biocompatibility of PES membranes for biomedical hemodialysis applications. UV-assisted grafting enhances the hydrophilicity and surface chemistry of the membranes, leading to reduced protein-binding capacity and improved interaction with human serum proteins. Variations in UV exposure conditions influence the hemocompatibility and fibrinogen adsorption on the coated PES membranes, impacting their clinical performance in uremic blood samples and potential activation of biological pathways.
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Ubong Eduok, Amira Abdelrasoul, Ahmed Shoker, Huu Doan
Summary: End stage renal disease affects around 10% of the global population, with kidney transplantation and hemodialysis being common treatments, but both have potential risks and drawbacks.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Shaghayegh Saadati, Ubong Eduok, Heloisa Westphalen, Amira Abdelrasoul, Ahmed Shoker, Phillip Choi, Huu Doan, Farhad Ein-Mozaffari, Ning Zhu
Summary: The study delves into the effects of blood-membrane interactions of commonly used PES and PAN membranes in Canadian hospitals on their biocompatibility, analyzing blood activation and proinflammatory cytokine production both experimentally and theoretically. Different tendencies of protein membrane-surface adhesion for PES and PAN contribute to variations in biological activations, highlighting the importance of surface hydrophilicity in protein/membrane biocompatibility.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Shaghayegh Saadati, Ubong Eduok, Heloisa Westphalen, Amira Abdelrasoul, Ahmed Shoker, Phillip Choi, Huu Doan, Farhad Ein-Mozaffari, Ning Zhu
Summary: The study demonstrates that surface modification of PVDF membranes with a new ZW polymer can effectively reduce protein adhesion and inflammation in patients undergoing hemodialysis. Compared to untreated membranes, ZW-coated membranes showed significantly reduced protein adhesion on their surfaces.
SURFACES AND INTERFACES
(2021)
Review
Environmental Sciences
Vu Tan Bui, Ubong Eduok, Amira Abdelrasoul, Dena W. McMartin
Summary: While oil sands production is important for Canada's economy, it also has negative impacts on water sources, biodiversity, ecosystems, and public health. Membrane technology, specifically mixed matrix membranes (MMMs), is being explored as a solution for treating oil sands process-affected water (OSPW) by improving membrane performance and durability. Reproducibility and feasibility for large-scale application are key research questions for the commercialization of MMMs.
WATER AND ENVIRONMENT JOURNAL
(2022)
Article
Chemistry, Physical
Omar Faye, Jerzy A. Szpunar, Ubong Eduok
Summary: The focus of this study is on hydrogen storage in pristine cellulose, chitosan, and cellulose. The findings suggest that niobium-doped cellulose and chitosan may serve as efficient and inexpensive hydrogen storage media.
Article
Electrochemistry
Alyssa Vander Zee, Lila Laundry-Mottiar, Saman Nikpour, Sina Matin, Jeffrey D. Henderson, Ubong Eduok, Jonas F. Hedberg, Dmitrij Zagidulin, Mark C. Biesinger, James J. Noel, Yolanda S. Hedberg
Summary: Copper is more susceptible to corrosion than 316L stainless steel in the presence of amino acids, which can also affect the release of other metals.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Electrochemistry
Masoud Atapour, Saber Sanaei, Zheng Wei, Mohammadali Sheikholeslam, Jeffrey D. Henderson, Ubong Eduok, Yara K. Hosein, David W. Holdsworth, Yolanda S. Hedberg, Hamid Reza Ghorbani
Summary: Biomedical cobalt-chromium-molybdenum alloys are commonly used for orthopedic and dental implants. Laser powder bed fusion is an additive manufacturing method used to produce these alloys, resulting in different microstructures and surface roughness based on the building direction. This study examined the corrosion resistance, bioactivity, and biocompatibility of LPBF CoCrMo in different building directions and found that it had minimal effect on corrosion. The surfaces showed satisfactory biocompatibility and bioactivity.
ELECTROCHIMICA ACTA
(2023)
Article
Materials Science, Multidisciplinary
Marshall Shuai Yang, Jinbao Huang, Hui Zhang, James Joseph Noel, Yolanda Susanne Hedberg, Jian Chen, Ubong Eduok, Ivan Barker, Jeffrey Daniel Henderson, Chengqian Xian, Haiping Zhang, Jesse Zhu
Summary: This study investigates the effects of incorporating montmorillonite-based nanoclay additives with different particle sizes into powder coatings. Results show that the nanoclay has better barrier effects at lower dosage, but higher dosage leads to severe defects. The nanoclay is found to have a self-repairing capability, indicating its potential for enhancing the anti-corrosive function of powder coatings.
Review
Chemistry, Physical
Omar Faye, Jerzy Szpunar, Ubong Eduok
Summary: Hydrogen production, storage, and transportation are crucial for achieving a clean and sustainable hydrogen economy. This review discusses the current state and recent advancements in these areas, as well as new techniques to address limitations. The development of modern hydrogen infrastructure is necessary to scale up hydrogen delivery.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Review
Environmental Sciences
Sana Daneshamouz, Ubong Eduok, Amira Abdelrasoul, Ahmed Shoker
Summary: Uremic toxins, particularly protein bound uremic toxins, pose a serious threat to patients with compromised kidney function. Understanding the methods for removing these toxins, such as p-cresyl sulfate and indoxyl sulfate, is crucial for their management. Further research is needed to explore biocompatible substances for effective removal of protein bound uremic toxins.
Article
Materials Science, Multidisciplinary
Ubong Eduok, Enyinnaya Ohaeri, Jerzy Szpunar
Summary: Chitosan derivatives have been successfully synthesized and grafted with allyl sulfonate onto graphene oxide nanosheets to form an organic/inorganic hybrid nanocomposite (CH(S)-GO). This nanocomposite demonstrated significant corrosion inhibition on X70 pipeline steel, attributed to the formation of protective polymeric chitosan-GO hybrid nanocomposite films on the metallic surface.
MATERIALS ADVANCES
(2021)
Article
Chemistry, Multidisciplinary
Ubong Eduok, Omar Faye, Jerzy Szpunar, Mazen Khaled
Summary: A new facile approach was presented to prepare two nonfluorinated hybrid organic-inorganic siloxane/polydimethylsiloxane nanocomposite coatings for cotton fabrics using two distinct silylating agents. The coatings exhibited unique capacities for self-cleaning and oil-water separation as superhydrophobic filters, with optimal performance achieved with specific ratios of silylating agents. The coated fabrics showed high static aqueous contact angles and separation efficiencies, with some variations in performance observed over multiple filtration cycles.
Article
Chemistry, Multidisciplinary
Ubong Eduok
Summary: The study involved fabricating coated cotton fabrics using modified zirconia nanoparticles and polydimethylsiloxane, with variations in concentrations of these components to achieve stability, self-cleaning, and oil-water separation properties. The coated fabrics exhibited superhydrophobicity, resistance against chemical and thermal oxidation, and maintained high separation efficiency for chloroform-water and toluene-water mixtures.
NEW JOURNAL OF CHEMISTRY
(2021)
