Article
Polymer Science
Sachin Sharma Ashok Kumar, Nujud Badawi Mohammed, Osamah Alduhaish, Kasi Ramesh, Subramaniam Ramesh, Mujeeb Khan, Baji Shaik, Syed. F. Adil
Summary: The researchers fabricated graphene/TiO2-based nanocomposite coating systems by adding TiO2 nanoparticles into the acrylic-epoxy polymeric matrix. The properties of the coatings were investigated using various testing methods. The results showed that the TiO2 nanoparticles were successfully decorated on the graphene surface and exhibited good dispersibility and uniform distribution within the polymeric matrix.
Article
Polymer Science
Sachin Sharma Ashok Kumar, I. A. Wonnie Ma, Gerard Ong, K. Ramesh, S. Ramesh
Summary: Researchers developed a series of coatings containing acrylic and epoxy resins to investigate their corrosion protection performance on mild steel substrates. 1 wt% polydimethylsiloxane (PDMS) solution was added as a modifier to enhance the corrosion protection and hydrophobicity of the coatings. The chemical structures and thermal stability of the coatings were evaluated using FTIR and TGA analysis, while their transparency and surface wettability were investigated using UV-Vis spectroscopy and water contact angle instrument. The corrosion protection performance was evaluated using EIS, and the T5 coating sample exhibited the best results.
JOURNAL OF POLYMER RESEARCH
(2023)
Article
Computer Science, Information Systems
Fowzia Akhter, Hasin R. Siddiquei, Md Eshrat E. Alahi, Krishanthi P. Jayasundera, Subhas Chandra Mukhopadhyay
Summary: A low-power, low-cost nitrate, phosphate, and pH sensor and sensing system have been developed for real-time water quality monitoring. The sensor is fabricated using 3D printing with carbon nanotube electrodes and polydimethylsiloxane substrate. Experimental results show that the sensor has high sensitivity to temperature, nitrate, phosphate, and pH levels, and the sensing system can accurately monitor and analyze water quality using a machine learning algorithm.
IEEE INTERNET OF THINGS JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Maryam Aghili, Mohsen Khodadadi Yazdi, Zahra Ranjbar, Seyed Hassan Jafari
Summary: Functionalized graphene oxide/epoxy nanocomposite coatings prepared through cathodic electrophoretic deposition process exhibit excellent corrosion resistance properties, although aggregation of graphene oxide at higher loadings may adversely affect anti-corrosion performance.
Article
Chemistry, Multidisciplinary
Ayman M. Atta, Mohamed H. El-Newehy, Meera Moydeen Abdulhameed, Mohamed H. Wahby, Ahmed Hashem
Summary: The enhancement of epoxy materials with nanomaterials for coating steel shows improved adhesion properties, superhyrophobicity, and durability in aggressive seawater environment.
Article
Chemistry, Multidisciplinary
Xintian Liu, Long Chen, Zhanqiang Liu, Qinghua Song, Chaozong Liu
Summary: The study focuses on improving the performance of epoxy-based anticorrosive coatings by introducing modified graphene oxide. The preparation process of nanocomposite coating was optimized using the response surface method, resulting in coatings that meet the requirements of high thermal and hydrophobic properties.
NANOTECHNOLOGY REVIEWS
(2021)
Article
Chemistry, Physical
Soroosh Torabi, Zhuoyun Cai, Jonathan T. Pham, Christine A. Trinkle
Summary: Waxy hydrocarbons can diffuse freely in PDMS, allowing for the creation of inexpensive surface micro patterns that modify adhesion and wetting. The micropatterns have submicron lateral resolution and variable thickness, and can be used multiple times without re-inking.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Naseem Akhtar, Malika Rani, Arshad Mahmood, Kashmala Tariq, G. Murtaza, Asma A. Alothman, Rahaf S. AL-zahrani, Sajid Ali, Naveed Kasuar Janjua, Aqeel Shah
Summary: This work successfully synthesized NaCr2O4/GO nanocomposite using co-precipitation method for energy storage applications. Characterizations such as SEM and XRD were performed to investigate the optical and structural properties. The nanocomposite showed reduced crystalline size and high specific capacitance, making it suitable for various applications.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Chemistry, Physical
Tizazu H. Mekonnen, Tesfaalem Haile, Malin Ly
Summary: In this study, a stiff, hydrophobic, and corrosion protective polyurethane nanocomposite coating was fabricated by incorporating surface modified cellulose nanocrystals (CNC), which improved thermal properties and material wettability of the modified CNC. The incorporation of modified CNC in PU not only improved thermomechanical properties but also enhanced interfacial adhesion between the nanoparticle and the PU matrix, leading to reduced water absorption properties of the PU composites. Salt spray and electrochemical impedance spectroscopy studies exhibited better anticorrosion behaviors of the fabricated nanocomposite as compared to PU, making the CNC modification through silanization a robust and appealing material for polymer composite applications.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Sachin Sharma Ashok Kumar, I. A. Wonnie Ma, K. Ramesh, S. Ramesh
Summary: Corrosion-induced damages have caused malfunctions and failures in metallic structures, resulting in economic loss. Graphene, as a wonder material, is widely used in corrosion protection coatings due to its excellent chemical stability, superior mechanical properties, and high corrosion resistance. This study demonstrates the remarkable features of graphene-based nanofillers in improving the barrier performance of acrylic-epoxy based polymer coatings.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Physical
A. Rosales, V Gutierrez, Janet Ocampo-Hernandez, Martha L. Jimenez-Gonzalez, Iliana E. Medina-Ramirez, L. Ortiz-Frade, K. Esquivel
Summary: This study investigated the effects of different hydrophobic agents and pH modification on the SiO2-TiO2 composite. The results showed that the surface morphology and roughness of the coating were influenced by the hydrophobic agents. Changes in vibrational properties and self-cleaning properties were observed due to the addition of TiO2 nanoparticles. The photocatalytic activity was improved in specific coatings with the hydrophobic agent and nanoparticles. The pH also had an impact on the performance of the coatings.
APPLIED SURFACE SCIENCE
(2022)
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
Chemistry, Applied
Qinwen Zheng, Jian Lv, Jing Zhang, Jie Feng
Summary: This paper introduces a research on an ice-free coating, which successfully improves the anti-icing performance of the coating by modifying its composition and structure, providing a strong support for the running of high-speed trains in winter or the electric power system that requires resistance to freezing rain.
PROGRESS IN ORGANIC COATINGS
(2021)
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, Multidisciplinary
Benny Wouters, Ehsan Jalilian, Raf Claessens, Negin Madelat, Tom Hauffman, Guy Van Assche, Herman Terryn, Annick Hubin
Summary: A new methodology using odd random phase electrochemical impedance spectroscopy (ORP-EIS) was developed to study the initial behavior of model organic coatings shortly after contact with an aqueous solution. The impedance results were resolved over time by calculating instantaneous impedance and fitting with a physically meaningful equivalent circuit, obtaining various physical parameters. The fitting results were verified using differential scanning calorimetry (DSC) and gravimetry.
Article
Thermodynamics
Yusuf Khan, Akanksha R. Urade, Amrita De Adhikari, Palash Chandra Maity, K. Ramesh, Shahid Bashir, Indranil Lahiri, S. Ramesh
Summary: Ni(OH)(2)/RGO core-shell hybrid nanostructure was synthesized using a facile chemical-precipitation technique, exhibiting high specific capacity and energy density as an electrode material.
INTERNATIONAL JOURNAL OF GREEN ENERGY
(2023)
Article
Environmental Studies
C. Nithya Priya, M. Muthuvinayagam, S. Ramesh, K. Ramesh
Summary: In this study, biodegradable solid polymer blend polymer electrolytes were prepared using synthetic polymer and biopolymer. The electrolytes were analyzed for their structural, vibrational, electrical, and electrochemical behavior. High ionic conductivity and favorable electrochemical properties were observed in the electrolytes.
ENERGY & ENVIRONMENT
(2023)
Article
Polymer Science
Ridhwan Razali, Zhi Ling Goh, Nur Khuzaimah Farhana, Ramesh Kasi, Ramesh Subramaniam
Summary: By incorporating transition metal oxide nanofiller, the performance of dye-sensitized solar cells can be improved. The shape of the nanofiller has an impact on the composite gel terpolymer electrolyte, with Co3O4 showing better performance due to its strong Lewis acidity.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Engineering, Electrical & Electronic
M. Nujud Badawi, Mamta Bhatia, S. Ramesh, K. Ramesh, Mujeeb Khan, Syed Farooq Adil
Summary: Pure natural cotton is a flexible and foldable material with a high response rate, making it suitable for low-cost electrode development for electrochemical supercapacitors. A composite of cotton with different ratios of a conducting polymer, PEDOT:PSS, was created using polymerization. A hydrogel electrolyte was developed using natural polymers. The fabricated supercapacitor was analyzed using various characterization techniques. The composite cotton-based supercapacitor showed a specific capacitance of 296 F/g at 100 mA g(-1) and demonstrated its performance by operating a LED.
JOURNAL OF ELECTRONIC MATERIALS
(2023)
Article
Green & Sustainable Science & Technology
Nujud Mohammad Badawi, Khalid Mujasam Batoo, S. Ramesh, K. Ramesh, Ahamad Imran
Summary: In this study, the effects of single-wall carbon nanotubes (SWCNT)/poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT: PSS) loading on the transparency and conductivity of pure cotton were investigated. The cotton fabric exhibited a low surface resistance and retained its maximum resistance even after three months. The results from various characterization techniques confirmed the good dispersion of SWCNTs/PEDOT: PSS in the cotton sample. Furthermore, the composite cotton/hydrogel polymer/composite cotton showed high specific capacitance and thermal stability.
Article
Materials Science, Multidisciplinary
Fathiah Kamarulazam, Shahid Bashir, S. Ramesh, K. Ramesh
Summary: This review discusses the development of two-dimensional MXene materials for efficient energy applications. Researchers have shown great interest in MXenes due to their outstanding characteristics, such as rich hydrophilic surface functional groups, high ionic conductivity, and hydrophilicity. The potential of MXenes as electrolytes in electrochemical energy systems, as well as other devices such as electrochromic devices and iontronics, is emphasized. The challenges and significance of MXenes are briefly touched upon, and the latest developments and successes of MXene-based electrolytes are presented.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Chemistry, Applied
Iling Aema Wonnie Ma, Gerard Ong, Ammar Shafaamri, Julie Nabilah Jamalludin, Nina Nazirah Ishun, Ramesh Kasi, Ramesh Subramaniam
Summary: This study aims to fabricate an acrylic-based polymeric composite coating with a hydrophobic surface by incorporating 3 Wt.% SiO2 nanoparticles, natural oil polyol (NOP), and polydimethylsiloxane. The structural properties of the coating were analyzed using various tests. The incorporation of SiO2 nanoparticles enhanced the surface roughness and hydrophobic properties, resulting in improved corrosion protection.
PIGMENT & RESIN TECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Sachin Sharma Ashok Kumar, M. Nujud Badawi, Khalid Mujasam Batoo, I. A. Wonnie Ma, K. Ramesh, S. Ramesh, Mohd Asif Shah
Summary: Acrylic-epoxy-based nanocomposite coatings loaded with graphene oxide (GO) nanoparticles at different concentrations were successfully prepared. The inclusion of GO nanoparticles increased thermal stability and reduced transmittance. The incorporation of GO and PDMS enhanced surface hydrophobicity and adhesion behavior, while FESEM micrographs confirmed excellent dispersibility. The unique features of graphene and its derivatives make them promising nanofillers/inhibitors for corrosion protection applications.
SCIENTIFIC REPORTS
(2023)
Article
Polymer Science
Sachin Sharma Ashok Kumar, Nujud Badawi Mohammed, Osamah Alduhaish, Kasi Ramesh, Subramaniam Ramesh, Mujeeb Khan, Baji Shaik, Syed. F. Adil
Summary: The researchers fabricated graphene/TiO2-based nanocomposite coating systems by adding TiO2 nanoparticles into the acrylic-epoxy polymeric matrix. The properties of the coatings were investigated using various testing methods. The results showed that the TiO2 nanoparticles were successfully decorated on the graphene surface and exhibited good dispersibility and uniform distribution within the polymeric matrix.
Article
Materials Science, Ceramics
Ignatius Y. Lim, C. H. Ting, C. K. Ng, J. Y. Tey, W. H. Yeo, S. Ramesh, K. Y. Sara Lee, Y. D. Chuah, W. D. Teng
Summary: In this study, 3Y-TZP ceramic feedstocks with different solid loadings were successfully prepared and printed using a screw-based 3D printing technique. The samples obtained after debinding and sintering showed desired density, hardness, and fracture toughness. The results demonstrated the feasibility of 3D printing granular 3Y-TZP ceramic feedstocks with high solid loadings.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Sachin Sharma Ashok Kumar, I. A. Wonnie Ma, K. Ramesh, S. Ramesh
Summary: Corrosion-induced damages have caused malfunctions and failures in metallic structures, resulting in economic loss. Graphene, as a wonder material, is widely used in corrosion protection coatings due to its excellent chemical stability, superior mechanical properties, and high corrosion resistance. This study demonstrates the remarkable features of graphene-based nanofillers in improving the barrier performance of acrylic-epoxy based polymer coatings.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Analytical
Nujud Badawi Mohammed, Khalid Mujasam Batoo, Sajjad Hussain, Ramesh Subramaniam, Ramesh Kasi, Mrutunjaya Bhuyan, Ahamad Imran, Muthumareeswaran Muthuramamoorthy
Summary: A conductive cotton hydrogel with graphene and ions can improve the efficiency of electrochemical processes in supercapacitors. The flexibility of the hydrogel, due to the soft nature of cotton, benefits the device's flexibility. The presence of graphene significantly increases the ionic conductivity of the hydrogel, leading to improved performance in supercapacitors.
Article
Engineering, Chemical
Sachin Sharma Ashok Kumar, I. A. Wonnie Ma, K. Ramesh, S. Ramesh
Summary: Graphene nanoparticles were successfully incorporated into acrylic-epoxy coatings, improving their hydrophobicity and thermal properties. Increasing the graphene content in the coatings resulted in a decrease in cross-linking density and overall performance. The addition of graphene as a nanofiller effectively enhanced the compactness and protective performance of the coatings.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2024)
