Article
Polymer Science
Kun Liu, Haijun Wang, Yao Wu, Yongxiang Wang, Chunlei Yuan
Summary: γ'-PVDF/PZT composite films with high content of γ-phase were prepared using hot-press blending, non-isothermal crystallization, coating [BMIM]BF4 on the surface of the films and annealing at high temperature. The effect of incorporating PZT on the α-to-γ' phase transformation, as well as the dielectric and ferroelectric properties of γ'-PVDF, was investigated. It was found that PZT increases the lamellar thickness of α-PVDF and promotes diffusion of [BMIM]BF4, thereby accelerating the [BMIM]BF4-assisted α-to-γ' phase transition. The γ'-PVDF/PZT composites showed a marked increase in dielectric constant and maximum polarization intensity compared to neat γ'-PVDF. This study presents a new approach for the efficient production of γ'-PVDF composite films with exceptional ferroelectric and dielectric properties.
Article
Chemistry, Multidisciplinary
T. H. de Vasconcelos, H. de O. Barros, R. V. B. Campos, F. F. do Carmo, J. P. C. do Nascimento, D. X. Gouveia, M. A. S. Silva, A. J. M. Sales, R. S. Silva, A. S. B. Sombra
Summary: This study evaluated the dielectric properties of a ZnNb2O6 matrix with added TiO2 in the microwave region. The addition of TiO2 led to the formation of the ZnTiNb2O8 phase. The ZNO-ZTNO composites showed improved resonant frequency coefficient, and as dielectric resonator antennas, exhibited high gain, bandwidth, and efficiency.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
Article
Engineering, Manufacturing
Wei Xiao, Bei Li, Jun Yan, Ling Wang, Xuewu Huang, Jiefeng Gao
Summary: Three dimensional graphene-based hybrid materials have attracted much interest and are being applied in various fields. These materials provide a framework for other functional materials and facilitate electron and mass transport during reactions. The synthesis methods, morphology, and applications of these hybrids are reviewed, with challenges and prospects discussed for future development.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Materials Science, Multidisciplinary
G. Essalah, H. Guermazi, S. Guermazi, G. Leroy, B. Duponchel, M. Mascot, Ch Poupin, A. Rao, S. Mangavati
Summary: In this study, composites were synthesized using (1-x) ZnO/xNb(2)O(5) mixture by the solid-state method. The formation of the composites depended on the percentage of Nb2O5. The dielectric and electric properties of the composites were investigated, and it was found that the composites exhibited different dielectric behavior depending on the composition. The study also discovered the magnetic properties of the composites.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Xin Wang, Haitao Yang, Xiaohua Yu, Chaoquan Hu, Jiacheng Hu, Rongxing Li, Yingzhi Zhang
Summary: Functional metal powders have unique properties and potential applications in various industries. This paper discusses the research progress, preparation methods, and applications of functional metal powders, including their processing methods and classification. The applications of functional metal powders in powder metallurgy, 3D printing, electromagnetic shielding, 5G base stations, and electronic industry are highlighted. The development prospects, opportunities, challenges, and possible solutions of functional metal powders are also summarized.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2022)
Article
Materials Science, Ceramics
Apurba Das, Aman Bhardwaj, Susmita Rabha, Lalit M. Pandey, Pamu Dobbidi
Summary: Through the study of HAP and ST composites, it was found that the crystallite size increased with the content of ST, and there was an exponential relationship between the dielectric constant and crystallite size. Protein adsorption was charge-related, and the adsorption amount was correlated with the dielectric constant. 20H-80S was identified as the best specimen based on physical and biological investigations.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Review
Materials Science, Biomaterials
Haiyan Zheng, Baoqi Zuo
Summary: Traditional silk protein hydrogels have limitations in terms of structure and functionality, but the development of functional silk protein hydrogels presents opportunities to overcome these limitations, attracting attention from scholars worldwide.
JOURNAL OF MATERIALS CHEMISTRY B
(2021)
Article
Engineering, Chemical
Boris I. Kharisov, Oxana V. Kharissova, Lucy T. Gonzalez, Yolanda Pena Mendez, Igor E. Uflyand, Idalia Gomez de la Fuente
Summary: Hydroxyapatite (HA) composites with carbon allotropes and nanocarbons are rapidly developing in materials chemistry, especially for medical applications. These composites can be synthesized using various methods and exhibit biocompatibility and hemocompatibility, making them suitable for bone regeneration and wastewater treatment.
Article
Polymer Science
Mireia Andonegi, Daniela M. Correia, Carlos M. Costa, Senentxu Lanceros-Mendez, Koro de la Caba, Pedro Guerrero
Summary: Wool, choline dihydrogen phosphate (ChDHP) or choline serinate (ChSeri) ionic liquids were added to native collagen formulations to prepare films. The incorporation of wool or ILs showed good dispersion and preserved the collagen fibrillary structure. The addition of wool or ILs improved tensile strength and electrical conductivity, and all films exhibited antistatic behavior.
Article
Materials Science, Ceramics
Yichen Lu, Hongxu Xie, Tongyu Meng, Jinxiao Liu, Xiaomei Lian, Fei Zhao, Xinhong Liu, Enxia Xu
Summary: Si3N4 ceramic is a promising material for microwave metallurgy furnaces due to its outstanding properties. The addition of phosphate improved the sintering and dielectric properties of Si3N4 ceramics.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Inorganic & Nuclear
Ramanath Prabhu, Karthika Shetty, T. Jeevananda, H. C. Ananda Murthy, Mika Sillanpaa, Tan Nhat
Summary: Polyaniline-halloysite nanoclay composites (PHC) were successfully prepared through inverted emulsion polymerization technique using benzoyl peroxide (BP) as the oxidizing agent. The FTIR spectra showed vibration bands associated with the stretching of NH, benzenoid, and quinoid rings. The specific conductance of the composites decreased with increasing halloysite nanoclay concentration, while the XRD pattern exhibited peaks at 20.08(0) and 25.34(0). Thermogravimetric analysis indicated improved thermal resistance compared to pure polyaniline. Field emission scanning electron microscopy revealed agglomeration of polyaniline particles and coating on halloysite nanoclay. The AC specific conductance increased due to the formation of bipolar and polarons, while the dielectric constant decreased with increasing frequency. The highest dielectric constant was observed for PHC (70/30) at 10(2) Hz, with a value of 14.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Review
Chemistry, Physical
Tianhao Wu, Quanli Ke, Mei Lu, Pengyun Pan, Ying Zhou, Zhenyu Gu, Guokai Cui, Hanfeng Lu
Summary: This paper reviews the recent progress and applications of carbon-silica composites. By combining carbon materials with silica, the drawbacks of individual materials can be overcome while their original advantages are maintained.
Article
Acoustics
Nadejda Horchidan, Lavinia Curecheriu, Cristina E. Ciomaga, Nicoleta Lupu, Liliana Mitoseriu
Summary: In the x BaGeO3-(1 - x)BaTiO3 ceramics, with Ge content below 0.10, the materials exhibit similar dielectric properties to BaTiO3 ceramics. However, increasing Ge content can enhance relative density and grain size, improving electrical properties, but may lead to loss of switching characteristics.
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
(2021)
Article
Materials Science, Characterization & Testing
Junwang Liu, Mingting Zhang, Lizhu Guan, Chunfeng Wang, Lei Shi, Yi Jin, Chao Han, Jihua Wang, Zhidong Han
Summary: The study shows that optimizing filler distribution in composite systems can significantly improve the dielectric constant and breakdown field strength. The selective composite system has a dielectric constant between 12 and 13, with a breakdown field strength of up to 25.8 kV/mm, over three times higher than that of the pure composite system.
Article
Materials Science, Multidisciplinary
Yan Yu, Bin Huang, Yan Zhao, Yunfeng Zhao, Lina Dai, Zhijie Zhang, Hua-Feng Fei
Summary: Polysiloxane-based dielectric elastomers have great potential as electroactive soft materials, but their low permittivity has hindered practical applications. This study demonstrates that introducing cyanosilicone oil into the elastomer matrix can significantly increase the permittivity and enhance the dielectric relaxation processes. The resulting elastomer composites exhibit lower Young's modulus and dielectric loss.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Fisheries
Camila Oliveira Paranhos, Luanna do Carmo Neves, Walisson Souza e Silva, Ronald Kennedy Luz
Summary: The aim of this study was to evaluate the survival and water quality of Hypsolebias flagellatus during transportation with different salt concentrations, transport times, and previous diets. The results showed that the concentration of 4 g salt/L had the highest dissolved oxygen, and the survival rate was lower after 48 hours of transportation. Meanwhile, the type of diet also had an influence on water quality and dissolved oxygen.
JOURNAL OF APPLIED AQUACULTURE
(2023)
Article
Materials Science, Ceramics
Reginaldo Muccillo, Sabrina G. M. Carvalho, Rafael L. Denaldi, Eliana N. S. Muccillo
Summary: This study investigated the impregnation of molten Na2CO3-K2CO3 eutectic compositions into two types of ceramic materials, and evaluated the conductivity and carbonate ion permeation of the ceramics through various analyses. The research aimed to prepare dual-phase membranes for carbon dioxide separation and develop carbon dioxide sensors.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Chemistry, Physical
Mahmoud. S. Alkathy, Attaur Rahaman, Valmor R. Mastelaro, Fabio. L. Zabotto, Flavio Paulo Milton, J. A. Eiras
Summary: Double hysteretic loop ceramics with different polarization were achieved through B-site co-doping engineering. The sample co-doped with Mg2+ and Ni2+ exhibited higher polarization and considerable breakdown strength, resulting in a high energy storage density and efficiency.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Electrochemistry
Maria Joseita dos Santos Costa, Aline Estefany Brandao Lima, Ester Pamponet Ribeiro, Gilson dos Santos Costa, Elson Longo, Geraldo Eduardo da Luz, Laecio Santos Cavalcante, Reginaldo da Silva Santos
Summary: This paper discusses a facile method for preparing transition metal tungstate thin films and their remarkable photoelectrochemical properties. The films were deposited onto conductive fluorine-doped tin oxide (FTO) glass substrate. The results show that the films have crystalline structures and nanostructured materials. They also demonstrate indirect transitions and successful application as photoanodes in a photoelectrochemical cell under polychromatic irradiation. This work provides a comparative and comprehensive study on AWO(4) films and suggests their potential applications in water splitting reactions and other photoelectrocatalytic processes.
JOURNAL OF APPLIED ELECTROCHEMISTRY
(2023)
Article
Polymer Science
Fernando C. M. Freire Filho, Josiane A. Santos, Alex O. Sanches, Eliton S. Medeiros, Jose A. Malmonge, Michael J. Silva
Summary: The effects of multiwall carbon nanotubes (MWCNTs) on the electrical, dielectric, and piezoelectric properties of the ferroelectric ceramic/castor-oil polyurethane (PUR) composite films were investigated. The addition of MWCNTs significantly enhanced the electrical and piezoelectric properties of the composite films by acting as conductive bridges between the lead zirconate titanate (PZT) particles. The dispersion of MWCNT nanoparticles also improved the poling effectiveness and increased the d(33) coefficient of the three-phase piezoelectric composites.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Medicine, General & Internal
Rocio Palomo-Carrion, Caline Cristine De Araujo Ferreira Jesus, Camila Araujo Santos Santana, Raquel Lindquist, Roselene Alencar, Helena Romay-Barrero, Elena Contell-Gonzalo, Karolinne Souza Monteiro, Elena Pinero-Pinto, Egmar Longo
Summary: The participation of adolescents with cerebral palsy in the community is reduced, affecting their socialization, self-determination, and quality of life. Patient and Public Involvement (PPI) is crucial for successful interventions, especially when stakeholders are involved at all stages of the research. Co-design, involving researchers, patients, and families, is key to bringing necessary elements to the intervention design.
JOURNAL OF CLINICAL MEDICINE
(2023)
Article
Chemistry, Physical
Chrystopher A. M. Pereira, Rafael A. C. Amoresi, Guilhermina F. Teixeira, Regiane C. Oliveira, Ubirajara Coleto Jr, Angelica R. da Luz, Priscila B. de Almeida, Alexandre Z. Simoes, Elias S. Monteiro Filho, Elson Longo, Leinig A. Perazolli
Summary: This study evaluated the impact of sodium hydroxide concentration on the synthesis of titanate-based photocatalysts. The results showed that increasing the chemical potential of NaOH stabilized the H2Ti3O7 center dot H2O phase and induced the growth of nanoparticles with nanosheet-like morphology. The photocatalyst exhibited efficient discoloration of Rhodamine B and high adsorption capacity for Methylene Blue.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Polymer Science
Luiz R. M. Lima, Guilherme F. Caetano, Viviane O. Soares, Renivaldo J. Santos, Jose A. Malmonge, Michael J. Silva, Alexander L. Yarin
Summary: The objective of this study was to develop NR-based biocomposites containing BioS and/or BL0 particles to improve their tensile response, biocompatibility, and bioactivity for biomedical applications. Morphological, tensile, thermal, and biological tests were conducted to evaluate the influence of BioS and BL0 particles on the properties of the NR matrix. The results showed that the addition of BioS or BL0 particles enhanced the tensile strength and biological properties of the NR matrix, making it suitable for various biomedical applications.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Engineering, Biomedical
Fabio Muchenski, Jenifer Pendiuk Goncalves, Yasmin Carla Ribeiro, Celia Regina Cavichiolo Franco, Carolina Camargo de Oliveira, Bruna Hilzendeger Marcon, Anny Robert, Lia Carolina Soares de Medeiros, Ronei Cardoso de Oliveira, Adilson Jesus Aparecido de Oliveira, Ney Mattoso
Summary: NiFeMo alloy nanoparticles were synthesized through co-precipitation with organic additives. The thermal evolution of the nanoparticles showed a significant increase in size and a crystalline structure similar to Ni3Fe phase. Magnetic property measurements indicated an increase in saturation magnetization and a decrease in remanence magnetization. Cell viability assays demonstrated that the nanoparticles were not cytotoxic up to a concentration of 0.4 μg/mL for both non-tumorigenic and tumor cells.
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS
(2023)
Article
Chemistry, Medicinal
Jeronimo F. Silva, Guilherme S. L. Fabris, Julio R. Sambrano, Anderson R. Albuquerque, Ary S. Maia
Summary: We introduce TOPISO3D Viewer, a user-friendly software that generates three-dimensional maps for analyzing descriptors based on QTAIM in periodic and nonperiodic systems. The software automates topological analysis calculations through the TOPOND package and generates a report to identify descriptor values at Bond Critical Points (BCP) and Critical Points of the Laplacian of the electron density (LCP), facilitating the classification of chemical interactions. The created maps can be stored as HTML files for future reference. The software's validity was confirmed through the study of various systems with 0-3D dimensions and the reevaluation of the topology of urea molecular crystal and its isolated molecule.
JOURNAL OF CHEMICAL INFORMATION AND MODELING
(2023)
Article
Chemistry, Analytical
Rafael Aparecido Ciola Amoresi, Noemi Angelica Vieira Roza, Talita Mazon
Summary: In this study, a flexible electrochemical immunosensor based on CeO2 nanorods immobilized with CRP antibody was developed for the detection of cardiovascular disease biomarker. The CeO2 nanorods were obtained by microwave-assisted hydrothermal method and characterized by XRD, TEM, and XPS. The immunosensor's working electrode was prepared by dispersing the nanorods in organic solvent, functionalizing them with cystamine and glutaraldehyde, and then modifying them with CRP antibody. The developed immunosensor exhibited good reproducibility, a wide detection range, and a low detection limit, making it suitable for point-of-care applications.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Materials Science, Ceramics
Thiago A. Lodi, Gustavo Galleani, Leonnam G. Merizio, Luiz G. Jacobsohn, Valmor R. Mastelaro, Andrea S. de Camargo
Summary: NaPO3-20Ga(2)O(3)-xNa(2)WO(4) (x = 0, 1, 3, 5 and 10% mol) tungsten gallium-phosphate glasses were synthesized and evaluated as potential intrinsic glass scintillators due to their high chemical stability and excellent optical properties. Increasing Na2WO4 content led to a decrease in OH- groups and the presence of sole W6+ species. The glasses exhibited high transmittance (around 90%) over a wide spectral range (400 to 2500 nm) and luminescence emission characteristic of the WO42- complex with average lifetimes ranging from 32 to 20 μs. Cryogenic temperatures resulted in a significant increase in luminescence emission for the NaPGaW glasses.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Chemistry, Applied
Jordan Brizi Neris, Jose Arnaldo S. Costa, Guilherme Martins Grosseli, Floriatan Santos Costa, Caio Marcio Paranhos
Summary: This study aims to evaluate the transport properties and CBZ adsorption capacities of PES/mesoparticles-based MMMs in aqueous solutions with different physicochemical characteristics. The results show that PES/SH-MCM-41-based MMMs have the highest potential for CBZ adsorption. The multivariate design results indicate that contact time, initial CBZ concentration, and the amount of SH-MCM-41 incorporated in MMM significantly influence the adsorption capacity, while pH does not affect it. Water permeability tests show a correlation between the H2O permeability and the porosity of the synthesized membranes. PES/SH-MCM-41-based MMMs exhibit high porosity and good ability to remove CBZ from water, regardless of the pH of the aqueous solutions.
REACTIVE & FUNCTIONAL POLYMERS
(2023)
Article
Chemistry, Medicinal
Jeronimo F. Silva, Guilherme S. L. Fabris, Julio R. Sambrano, Anderson R. Albuquerque, Ary S. Maia
Summary: We introduce TOPISO3D Viewer, a user-friendly software that generates three-dimensional maps to analyze descriptors based on QTAIM applied in periodic and nonperiodic systems. The software automates topological analysis calculations through TOPOND package and generates a report to identify values of descriptors at BCP and LCP, facilitating chemical interaction classification. The generated maps can be stored as HTML files for later consultation. Several systems with 0-3D dimensions were studied to validate the software, and the topology of urea molecular crystal and its isolated molecule were revisited.
JOURNAL OF CHEMICAL INFORMATION AND MODELING
(2023)
Article
Chemistry, Multidisciplinary
Mariana A. M. Rezende, Pedro P. Gromboni, Patricia G. Corradini, Almir Sales, Lucia H. Mascaro
Summary: The water treatment sludge (WTS) is a complex residue that consists of organic and inorganic matter in various states. Improper disposal of WTS can negatively impact the environment, causing a decrease in dissolved oxygen and an increase in metal concentration in watercourses. This study evaluated the effects of using WTS as a substitute for natural sand in cementitious composite on the physical and mechanical properties of concrete, as well as its corrosion resistance.
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
(2023)
