Article
Chemistry, Multidisciplinary
Kai Yao, Hongxia Zhu, Yulu Wang, Rong Luo, Liqiang Jin, Lefu Xie, Zhigang Tian
Summary: Composite coatings with anti-corrosive properties were fabricated by using quaternized silicone oil modified graphene oxide and silicone polymer. The quaternized silicone oil modified graphene oxide (M-GO) was successfully synthesized and characterized. The M-GO-reinforced silicone composites exhibited significant improvements in thermal stability, mechanical properties, and especially anti-corrosive properties.
Article
Chemistry, Physical
Lucas M. C. Silva, Bruno S. Goncalves, Jorgimara de O. Braga, Tarcizo C. de Souza, Vinicius G. de Castro, Glaura G. Silva, Glenda R. B. S. Lacerda, Tulio Matencio, Tiago C. Barbosa, Carlos M. Viana, Manuel Houmard, Eduardo H. M. Nunes
Summary: Smooth and optically transparent titania (TiO2) and TiO2-reduced graphene oxide (RGO) composite films were successfully prepared by combining sol-gel process and hydrothermal treatment. UVA light promoted the reduction of GO to RGO, increasing electrical conductivity and hydrophilicity. Heat treatment decreased water contact angle and increased surface energy by removing organics residues and burning graphene.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Applied
Chang-An Xu, Zhuangzhuang Chu, Xingchi Li, Heng Fang, Weijian Zhou, Yang Hu, Xudong Chen, Zhuohong Yang
Summary: In this work, renewable vanillin and silicone with excellent anti-corrosion properties were grafted to graphene oxide (GO) to prepare APGO-based epoxy vinyl ester resin composites. The composite with 0.1 wt% APGO showed the best performance: its conductivity was far lower than the critical electrical insulation value, breaking strength improved by 38.0%, contact angle increased by 65.7%, and anti-corrosion efficiency reached 99.03%.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Chemistry, Multidisciplinary
Kuilin Lv, Ruina Pan, Lei Zhang, Yuan Tian, Yanqiu Sui, Detian Wan
Summary: Waterborne epoxy resin and graphene/ZnO were used to construct composite coatings with enhanced anticorrosive performance. The addition of graphene and ZnO significantly improved the corrosion protection properties of the coatings. ZnO acted as a barrier reinforcement to improve the dispersibility of graphene in the coatings, and the parallel assembly of graphene led to remarkable improvement of anticorrosion properties.
Review
Energy & Fuels
H. Kiranakumar, R. Thejas, C. S. Naveen, M. Ijaz Khan, G. D. Prasanna, Sathish Reddy, Mowffaq Oreijah, Kamel Guedri, Omar T. Bafakeeh, Mohammed Jameel
Summary: This article provides an overview of the electrical and gas-sensing properties of reduced graphene oxide-metal oxide nanocomposites with improved sensitivity, selectivity, stability, and other sensing performances. It highlights the importance of exploring this area for the development of high-performance gas sensors.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Physics, Applied
Fariha Nasrullah, M. U. Islam, Aamir Nazir, Shahzad Naseem
Summary: This report elaborates on the fabrication and evaluation of composites of spinel ferrite and graphene oxide. The spinel ferrite was synthesized using the sol-gel auto combustion technique, while graphene oxide was prepared using the modified Hummers method. The nanocomposites were fabricated by sonicating the ferrite and graphene oxide in water. The study found that sample C-1, with high saturation magnetization, high coercivity, low dielectric constant, and high resistivity, is suitable for high-frequency applications like microwave absorbers.
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
(2022)
Article
Chemistry, Multidisciplinary
Francesca Romana Lamastra, Giampiero Montesperelli, Emanuele Galvanetto, Mehdi Chougan, Seyed Hamidreza Ghaffar, Mazen J. Al-Kheetan, Alessandra Bianco
Summary: Due to global environmental concerns, it is imperative to improve the service life of structures and infrastructures. Graphene oxide nanosheets (GONSs) dispersed in a cement matrix can enhance building materials' performance by promoting hydration, refining microstructure, and improving interfacial bonding.
Article
Materials Science, Multidisciplinary
Shanmuga Sundari Chandraraj, Joseph Raj Xavier
Summary: The surface of CuO nanoparticles was modified with AMPTD and anchored on the surface of GO to achieve proper dispersion in the polymer matrix. TEM and SEM/EDX analysis confirmed the uniform dispersion of AMPTD-functionalized CuO nanoparticles and GO. The epoxy-GO/AMPTD-CuO nanocomposites showed improved mechanical and corrosion protective properties, making them suitable for use in cooling water systems.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Multidisciplinary Sciences
Christos Pavlou, Maria Giovanna Pastore Carbone, Anastasios C. Manikas, George Trakakis, Can Koral, Gianpaolo Papari, Antonello Andreone, Costas Galiotis
Summary: A new fabrication method was used to produce continuous cm-scale graphene/polymer nanolaminates, which showed enhanced electromagnetic interference shielding effectiveness, conductivity, and mechanical properties.
NATURE COMMUNICATIONS
(2021)
Article
Materials Science, Ceramics
Amish Kumar Gautam, Mohd Faraz, Neeraj Khare
Summary: This article synthesized tungsten oxide nanoparticles and tungsten oxide-reduced graphene oxide nanocomposites, and studied their thermoelectric properties. The results showed that the thermoelectric material figure of merit of WO3-rGO nanocomposites increased by 8.8 times at 313K, with significantly enhanced electrical conductivity and reduced thermal conductivity compared to WO3 nanoparticles.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Debora de Lima Alves, Anderson Oliveira da Silva, Sergio Neves Monteiro, Ricardo Ponde Weber, Flavio James Humberto Tommasini Vieira Ramos, Livia Rodrigues Menezes
Summary: Polymeric nanocomposites of PMMA added with 20wt.% GO were synthesized and irradiated with UV-B to reduce GO and obtain electrically semiconductive nanocomposites (PMMA-rGO). The addition of GO and its reduction by UV-B radiation promoted thermal stability, stiffness, and electrical conductivity of the nanocomposites. The UV-B irradiation also improved the dispersion of rGO in the PMMA matrix and enhanced the surface interaction between GO/rGO flakes and the PMMA matrix.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Salhah H. Alrefaee, Amira Ben Gouider Trabelsi, Ahmed E. Abdelhamid, Azza A. Ward, Wafaa Elsharkawy, Fatemah H. Alkallas, Ayman M. Mostafa, Ameenah N. Al-Ahmadi, Sherif S. Nafee, Rami Adel Pashameah, Ahmed M. Khalil
Summary: Polymer nanocomposites based on recycled polystyrene and polyvinylpyrrolidone with reduced graphene oxide were prepared through a casting technique. Introduction of reduced graphene oxide significantly enhanced the electrical conductivity and dielectric properties of the nanocomposites. The results suggest that these nanocomposites have potential applications in energy storage, electronics, anti-static, and electro-static dissipation.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Applied
Felipe da S. Medeiros, Camila S. R. Cury, Claudia K. B. de Vasconcelos, Glaura G. Silva
Summary: This study improved the performance of fusion-bonded epoxy coatings by adding graphene, enhancing adhesion and reducing indentation. The combination of graphene nanofillers with other fillers resulted in improved overall properties of the coatings.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Materials Science, Characterization & Testing
Jie Fan, Jiping Yang, Hong Li, Junpeng Tian, Meng Wang, Yunfeng Zhao
Summary: The study showed that as the oxidation degree of graphene oxide increased, it exhibited better dispersion in the matrix and improved interfacial interactions with epoxy resin, leading to enhanced mechanical properties of the nanocomposites. The tensile properties of the GO/epoxy nanocomposites at room temperature and liquid nitrogen temperature increased with the GO oxidation degree, reaching the highest performance at an appropriate oxidation degree. The toughening mechanisms of GO for epoxy nanocomposites at room temperature and liquid nitrogen temperature were analyzed and showed significant differences.
Review
Chemistry, Physical
Maryam Azizi-Lalabadi, Seid Mahdi Jafari
Summary: Graphene and graphene oxide nanocomposites exhibit unique properties suitable for various medical, industrial, and agricultural applications. Different fabrication methods have been explored, with a focus on finding an effective large-scale production method with high quality products. The promising performance of graphene-based bio-nanocomposites in biosensors, drug delivery systems, antimicrobials, electrodes, and energy storage systems has been highlighted.
ADVANCES IN COLLOID AND INTERFACE SCIENCE
(2021)
Article
Polymer Science
Marina P. Arrieta, Miguel Perdiguero, Stefano Fiori, Jose Maria Kenny, Laura Peponi
POLYMER DEGRADATION AND STABILITY
(2020)
Article
Biochemistry & Molecular Biology
Marina Ramos, Ana Beltran, Elena Fortunati, Mercedes Peltzer, Francesco Cristofaro, Livia Visai, Artur J. M. Valente, Alfonso Jimenez, Jose Maria Kenny, Maria Carmen Garrigos
Review
Materials Science, Paper & Wood
P. Posada, J. Velasquez-Cock, C. Gomez-Hoyos, A. M. Serpa Guerra, S. Lyulin, J. M. Kenny, P. Ganan, C. Castro, R. Zuluaga
Article
Polymer Science
Weijun Yang, Guochuang Qi, Jose Maria Kenny, Debora Puglia, Piming Ma
Article
Polymer Science
Adrian Leones, Alicia Mujica-Garcia, Marina Patricia Arrieta, Valentina Salaris, Daniel Lopez, Jose Maria Kenny, Laura Peponi
Article
Biochemistry & Molecular Biology
Weijun Yang, Xiaoyan He, Francesca Luzi, Weifu Dong, Ting Zheng, Jose M. Kenny, Debora Puglia, Piming Ma
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2020)
Editorial Material
Polymer Science
Alfonso Jimenez, Francisco Vilaplana, Lars Berglund, Jose M. Kenny
POLYMER DEGRADATION AND STABILITY
(2021)
Article
Chemistry, Applied
Weijun Yang, Hui Ding, Guochuang Qi, Chengcheng Li, Pengwu Xu, Ting Zheng, Xiangmiao Zhu, Jose M. Kenny, Debora Puglia, Piming Ma
Summary: By incorporating various contents of lignin nanoparticles (LNP) and different crosslinkers, UV shielding effect and enhanced thermal stability were achieved in PVA nanocomposite films, along with improved plasticization resulting in increased tensile strength.
REACTIVE & FUNCTIONAL POLYMERS
(2021)
Article
Biochemistry & Molecular Biology
Weijun Yang, Hui Ding, Guochuang Qi, Jiaqi Guo, Fei Xu, Chengcheng Li, Debora Puglia, Jose Kenny, Piming Ma
Summary: This study successfully prepared lignin nanoparticles through acid treatment and surface amination modification, and evaluated their antioxidant properties. The results showed that the modified a-LNPs exhibited more significant antioxidant activity and higher UV resistance performance.
Article
Biochemistry & Molecular Biology
Adrian Leones, Valentina Salaris, Alicia Mujica-Garcia, Marina P. Arrieta, Daniel Lopez, Marcela Lieblich, Jose Maria Kenny, Laura Peponi
Summary: This study investigated the morphological, thermal, and mechanical properties of electrospun nanocomposite fibers reinforced with organic and inorganic nanoparticles. The addition of both untreated and functionalized CNC improved fiber crystallinity, while organic and inorganic nanoparticles decreased elastic modulus and tensile strength but increased elongation at break. Furthermore, all reinforced systems degraded under composting conditions after 35 days.
Article
Materials Science, Biomaterials
Weijun Yang, Fei Xu, Xinyu Ma, Jiaqi Guo, Chengcheng Li, Sudan Shen, Debora Puglia, Jiwei Chen, Pengwu Xu, Jose Kenny, Piming Ma
Summary: In this study, Ag nanoparticles were reduced on lignin nanoparticles (LNPAg) surface without a catalyst and then incorporated into glutaraldehyde crosslinked PVA hydrogels with cellulose nanocrystals (CNC). The resulting composite hydrogels showed excellent radical scavenging and antibacterial activities, with LNPAg nanoparticles enhancing wound healing in mice model of skin resection. These findings suggest that PVA hydrogels containing LNPAg could serve as efficient biomedical wound dressing materials.
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
(2021)
Article
Polymer Science
Valentina Salaris, Adrian Leones, Daniel Lopez, Jose Maria Kenny, Laura Peponi
Summary: This review emphasizes the importance of the synergic effects between electrospun polymeric fibers and shape-memory properties and suggests further exploration in both scientific and industrial aspects. Promising results have been obtained in the biomedical field, as well as in sensors and actuators, and electronics.
Article
Polymer Science
Valentina Salaris, Adrian Leones, Daniel Lopez, Jose Maria Kenny, Laura Peponi
Summary: This work investigates the effects of adding MgO and Mg(OH)2 nanoparticles on the morphology, thermal properties, and mechanical properties of poly(e-caprolactone) (PCL)-based electrospun fiber mats. The study finds that adding nanoparticles increases the fiber diameter and reduces the onset degradation temperature and maximum degradation temperature. Furthermore, the addition of nanoparticles decreases the crystallinity of the reinforced fibers.
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2023)
Article
Biochemistry & Molecular Biology
Valentina Salaris, Daniel Lopez, Jose Maria Kenny, Laura Peponi
Summary: The in vitro degradation behavior of PCL-based electrospun nanofibers in phosphate buffer solution (PBS) and simulated body fluid (SBF) was studied, along with the influence of Mg-based nanoparticles on the degradation process and bioactivity. The presence of nanoparticles was found to accelerate the degradation of the nanofibers, resulting in a reduction in diameter and an increase in crystallinity. Furthermore, the bioactivity of the nanofibers was confirmed through the formation of crystals on the surface, indicating the presence of apatites.
Article
Chemistry, Multidisciplinary
Laura Peponi, Karla A. Barrera-Rivera, Jose M. Kenny, Angel Marcos-Fernandez, Antonio Martinez-Richa, Daniel Lopez
Summary: In this study, the chemical modification of cellulose nanocrystals (NCs) was carried out to covalently functionalize the external surface of NCs with poly(L-lactic acid) (PLLA) and poly(epsilon-caprolactone) (PCL) using an enzyme as a catalyst. Various analytical techniques were used to confirm the success of the grafting reactions and to study the crystalline nature of the functionalized polymeric chains.
