Article
Chemistry, Physical
Gamal A. Khater, Amany A. El-Kheshen, Mohammad M. Farag
Summary: This article investigates the preparation of glass-ceramic samples using industrial waste by-pass cement dust and natural materials. The synthesized samples were analyzed using various techniques, revealing the formation of different phases and changes in microstructure and thermal expansion coefficients. The research demonstrates the potential utilization of industrial waste to produce functional materials.
Article
Materials Science, Ceramics
Jinyang Feng, Donghua Wu, Min Long, Kun Lei, Yuna Sun, Xiujian Zhao
Summary: Glass-ceramics with diopside as the main crystalline phase were prepared using waste glass and kaolin via low-temperature powder sintering method. The addition of kaolin and raising sintering temperature promoted the formation of diopside, leading to enhanced bending strength and density in the glass-ceramics.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Yunlong Luo, Fu Wang, Hanzhen Zhu, Qilong Liao, Youli Xu, Laibao Liu
Summary: This study successfully synthesized diopside-based glass-ceramics by using granite tailings and titanium-bearing blast furnace slags as raw materials. The introduction of granite tailings was found to deteriorate the melting quality of glass and decrease the crystallization tendency, leading to a decrease in the number of microcrystals in glass-ceramics and an increase in the glass phase. Furthermore, an increase in the content of granite tailings resulted in a decrease in the volume density and microhardness of glass-ceramics.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Materials Science, Ceramics
Ebrahim A. Mahdy, Hanaa Y. Ahmed, Mohammad M. Farag
Summary: This study investigated the effect of introducing Na-Ca-phosphate and/or fluorapatite in bioactive wollastonite-diopside. The results showed that NCP-containing WD glassceramic had the lowest density and microhardness values, while the combination of Na-Ca-phosphate and fluorapatite led to increased cytotoxicity. The properties of WD glass-ceramics can be tailored for biomedical applications.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Review
Polymer Science
Andrea Martelli, Devis Bellucci, Valeria Cannillo
Summary: Tissue engineering is a promising field in regenerative medicine that utilizes synthetic grafts like scaffolds to regenerate damaged tissues. Polymers and bioactive glasses are popular materials for scaffold production due to their adjustable properties and interaction with the body. Additive manufacturing is a promising method for producing scaffolds, but challenges remain in tailoring mechanical properties and achieving controlled degradation for successful tissue regeneration. This review summarizes the potential and limitations of using additive manufacturing techniques for polymer/bioactive glass scaffold production and emphasizes the importance of addressing current challenges in tissue engineering for reliable strategies.
Article
Chemistry, Physical
Arish Dasan, Paulina Ozog, Jozef Kraxner, Hamada Elsayed, Elena Colusso, Luca Grigolato, Gianpaolo Savio, Dusan Galusek, Enrico Bernardo
Summary: This study explores the potential of using glass recovered from liquid crystal displays to manufacture highly porous scaffolds. The research demonstrates that selecting glass with a high transition temperature and the ability to completely burn out organics can achieve high translucency during sintering.
Article
Chemistry, Physical
Fulden Dogrul, Paulina Ozog, Martin Michalek, Hamada Elsayed, Dusan Galusek, Liliana Liverani, Aldo R. Boccaccini, Enrico Bernardo
Summary: Silicone resins filled with phosphates and oxide fillers can be fired at high temperatures to produce glass-ceramic products for tissue engineering applications. This technology allows for direct ink writing of silicone-based mixtures at room temperature, followed by thermal treatment for conversion into ceramics.
Article
Materials Science, Ceramics
Rob Atkin, Timothy B. Sercombe, Neda Ghaebi Panah
Summary: Bioactive glass scaffolds are commonly used in bone tissue engineering applications, and sintering is often employed to enhance their mechanical strength. However, sintering can lead to crystallization, resulting in reduced bioactivity and biodegradability. This study compared the in-vitro bioactivity and biodegradability of sintered 58S bioactive glass made from fully amorphous powder and partially crystalline powder with the same chemical compositions. The results showed that the sintered 58S produced from glass ceramic powder exhibited higher in-vitro bioactivity and biodegradability rate than that from fully amorphous powder. The initial structure after calcination was found to be crucial in determining the subsequent crystallization during sintering, and the presence of crystallinity and hydroxyapatite formation after calcination played important roles in increasing the bioactivity and biodegradability rate of the sintered 58S.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Physical
Noor Aizat Noor Hisham, Mohd Hafiz Mohd Zaid, Sidek Hj Ab Aziz, Farah Diana Muhammad
Summary: This study utilized waste soda lime silica and ark clamshell to fabricate foam glass-ceramics, successfully preparing a series of foam glass-ceramics with different proportions at various sintering temperatures. The results showed that the optimal performance was achieved with 6% ark clamshell content and sintering at 800 degrees Celsius.
Article
Materials Science, Ceramics
Elisa Fiume, Jonathan Massera, Daniele D'Ambrosio, Enrica Verne, Francesco Baino
Summary: This experimental work describes a new method for manufacturing sol-gel bioactive silicate scaffolds using dried gels as basic material within the ink composition. The scaffolds were characterized in terms of morphological-compositional features and bioactivity in simulated body fluid. The results showed the possibility of using robocast sol-gel-derived scaffolds in bone tissue engineering approaches.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Mehran Dadkhah, Jean-Marc Tulliani, Abdollah Saboori, Luca Iuliano
Summary: This review provides an overview of the challenges in additive manufacturing of ceramics compared to polymers and metals, and discusses the recent progress and current challenges in producing complex shaped ceramic components via AM technologies. The state of the art in 3D printing processes for ceramic fabrication is discussed, including their advantages, disadvantages, and potential applications. The potential and challenges of AM in producing complex shape ceramic components are also explored.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Engineering, Environmental
Yanrong Cheng, Xiaoyan Shu, Mingfen Wen, Yuexiang Lu, Pan Tan, Xirui Lu, Lingshuang Li, Faqin Dong
Summary: The solidification of nuclear waste has significant implications for development, and scientists have fabricated a simulated nuclear waste form using the sintering process of diopside. The study found that the Fe element in diopside affects the amorphization process and mechanical properties of the waste form. A natural analog in the form of a glassy bulk was discovered, which can solidify the simulated trivalent actinide of Nd3+. The addition of Nd2O3 was found to affect the polymerization degree of glass components in the waste form. Q3 unit was identified as a key component, and the loading capacity of Nd2O3 reached 19 wt.%. The waste form has a silicate-apatite structure with even distribution, showing promising mechanical properties.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Biochemistry & Molecular Biology
Azadeh Saberi, Aliasghar Behnamghader, Behzad Aghabarari, Aliakbar Yousefi, Dorota Majda, Maria Victoria Martinez Huerta, Masoud Mozafari
Summary: This study proposes a three-dimensional composite scaffold made of polylactic acid and spray dried glass-ceramic microparticles. The characterization shows that the scaffold has interconnected porosity and good biomineralization capacity. The scaffold also improves cell adhesion and activity in cell experiments.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Nanoscience & Nanotechnology
Yu Shi, Xiwen Song, Xiaoxing Han, Mingxing Zhang, Mengyao Dong
Summary: The study revealed that the addition of Fe and Ce in different forms in CAMS glass-ceramics can affect the formation of crystals. Ce addition favors the formation of Ce-containing solid solution diopside, while Fe addition promotes diopside formation. Additionally, the role of CeO6 contributes to the precipitation of albite and anorthite.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2021)
Review
Dentistry, Oral Surgery & Medicine
Y. Zhang, S. Vardhaman, C. S. Rodrigues, B. R. Lawn
Summary: The purpose of this article is to review the current understanding and identify future research needs for lithia-based glass-ceramics in dental materials. The advancements in material development and digital technology have improved the efficiency and accuracy of dental workflow and ceramic restorations. New variants of lithia-based glass-ceramics with more efficient fabrication routes are continuously being introduced. Challenges and alternative methods, such as additive manufacturing and 3-dimensional printing, are discussed for the development and production of high-quality dental glass-ceramic prostheses.
JOURNAL OF DENTAL RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Li Yao, Shixiang Zhou, Longkai Pan, Hui Mei, Yang Li, Konstantinos G. Dassios, Paolo Colombo, Laifei Cheng, Litong Zhang
Summary: This study achieves the fabrication of all-ceramic metamaterial microwave blackbodies, demonstrating broadband microwave absorption capability, temperature insensitivity, and structural scalability. It also exhibits additional properties of noise reduction and high wear resistance.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Riccardo Sponchiado, Stefano Rosso, Pierandrea Dal Fabbro, Luca Grigolato, Hamada Elsayed, Enrico Bernardo, Mattia Maltauro, Francesca Uccheddu, Roberto Meneghello, Gianmaria Concheri, Gianpaolo Savio
Summary: Material extrusion additive manufacturing allows for combining multiple materials in the same nozzle, known as material coextrusion, which enables the creation of materials with a wide range of properties. This study investigates the behavior of two compatible material pairs and proposes a model to describe material distribution. The results from analytical and numerical models were validated through experimental tests, providing valuable insights for designers and contributing to additive manufacturing research.
Article
Materials Science, Multidisciplinary
A. M. Faramawy, Hamada Elsayed, Mohamed Sabry, H. M. El-Sayed
Summary: Cr-doped Co3O4 thin films were prepared by spray pyrolysis on soda-lima glass. The structure and morphology of the prepared samples were characterized by GIXRD, FTIR, and SEM. The results showed the formation of a single cubic spinel phase with a crystallite size of 6 nm. Optical absorption spectra revealed different electronic transitions and estimations of the band gap structure. The electrical resistivity was found to increase with increasing Cr content. Additionally, the resistivity decreased under visible illumination and increased under infrared illumination, with the sensitivity enhanced by increasing the Cr content. This work introduces a new application for Co3O4 material as a light detector.
Article
Chemistry, Multidisciplinary
Xuehui Liu, Siqi Ma, Peigang He, Meirong Wang, Xiaoming Duan, Dechang Jia, Paolo Colombo, Yu Zhou
Summary: In this work, geopolymer materials with different amounts of reduced graphene oxide loaded on zinc oxide (rGO@ZnO/GP) were fabricated as efficient photocatalysts for the degradation of methylene blue (MB). The presence of rGO in the geopolymer matrix promoted the migration of photogenerated electrons and hindered the recombination of charges, resulting in a 92.56% removal efficiency of MB within 30 min by the 56%rGO@ZnO/GP. The 3D printed 56%rGO@ZnO/GP scaffold also exhibited efficient photocatalytic activity for the degradation of MB, and the structured catalyst facilitated the recovery of the active material.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Article
Materials Science, Ceramics
Hualong Yang, Siqi Ma, Shengjian Zhao, Qikun Wang, Xuehui Liu, Peigang He, Dechang Jia, Paolo Colombo, Yu Zhou
Summary: This study investigates the oligomerization process of geopolymer materials using ab initio molecular simulations. The results reveal that the presence of Al(OH)(4)(-) monomers significantly reduces the reaction barriers of dimerization, promoting the crosslinking degree of the geopolymer gel. Increasing the pH value of the alkali-activated solution facilitates the reaction between Si-bearing monomers and Al(OH)(4)(-) monomers, resulting in a decrease in the Si/Al ratio of the geopolymer gel at the initial stage.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Marco Pelanconi, Samuele Bottacin, Paolo Colombo, Alberto Ortona
Summary: This article presents a novel hybrid additive manufacturing technique for fabricating polymer-derived ceramic parts with high geometric complexity. The process involves the use of powder bed fusion technology to create high porous polymeric preforms, which are then converted into ceramics through preceramic polymer infiltration and pyrolysis. Complex structures of a rotated cube and a gyroid with specific dimensions and geometric macroporosity were successfully 3D printed using different preceramic polymers. Despite a significant linear shrinkage, the parts maintained their designed complex shape without deformations. The proposed method offers advantages in terms of using mature polymer powder bed fusion technology for ceramic additive manufacturing and direct fabrication of net-shape complex ceramic parts from preceramic precursors.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Xinyu Li, Jiaqi Zheng, Kankan Zheng, Feiyan Su, Zhenquan Zhao, Chengying Bai, Ting Zheng, Xiaodong Wang, Yingjie Qiao, Paolo Colombo
Summary: High porosity coal gangue-based alkali activated foams were synthesized using an efficient microwave foaming technique within a short timeframe. The foams' porosity, density, porous structure, and compression strength were evaluated, along with their potential use as pH regulators. The study showed that alkali activated foams with 100% coal gangue as the mineral constituent can effectively buffer pH levels while providing a valuable route for solid waste reuse.
Article
Engineering, Multidisciplinary
Annj Zamuner, Elena Zeni, Hamada Elsayed, Michele Di Foggia, Paola Taddei, Antonella Pasquato, Lucy Di Silvio, Enrico Bernardo, Paola Brun, Monica Dettin
Summary: Hardystonite-based bioceramic foams were easily obtained via thermal treatment of silicone resins and reactive oxide fillers in air. By incorporating strontium oxide and magnesium oxide precursors, a complex solid solution with superior biocompatibility and bioactivity properties can be obtained.
Article
Materials Science, Ceramics
He Li, Hamada Elsayed, Paolo Colombo
Summary: Stereolithography based 3D printing is efficient for fabricating alumina ceramics. The mechanical properties of 3D printed alumina ceramics were investigated in this study. The addition of TiO2 increased the flexural strength, but also led to anisotropic behavior. The addition of CaCO3 decreased the shrinkage and flexural strength due to the formation of elongated grains, while the addition of MgO helped decrease anisotropic differences in mechanical properties.
CERAMICS INTERNATIONAL
(2023)
Article
Instruments & Instrumentation
A. Andrighetto, L. Centofante, F. Gramegna, A. Monetti, M. Ballan, A. Zenoni, S. Corradetti, G. Lilli, M. Manzolaro, T. Marchi, A. Arzenton, O. S. Khwairakpam, D. Scarpa, A. Donzella, E. Mariotti, G. Meneghetti, P. Colombo, L. Biasetto, R. Oboe, M. Lunardon, D. Rifuggiato
Summary: SPES is an Italian ISOL facility that produces radioactive beams by inducing fission with a high power cyclotron. The unique feature of this facility is the interaction between the radioactive beam and a multi-disks uranium carbide target. The main objectives of the SPES project are to provide low-energy radioactive beams for beta decay experiments and radiopharmaceutical applications.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2023)
Article
Materials Science, Ceramics
Fulden Dogrul, Vera Bednarzig, Hamada Elsayed, Liliana Liverani, Dusan Galusek, Enrico Bernardo, Aldo R. Boccaccini
Summary: In this study, reticulated akermanite 3D scaffolds were fabricated using direct ink writing technology, and different additives were added to influence the mechanical properties of the scaffolds. It was found that the two additives did not lead to significant differences in biological response, and the fabricated ceramics showed in-vitro bioactivity and antibacterial activity.
Article
Chemistry, Physical
Qikun Wang, Dechang Jia, Wenjiu Duan, Hualong Yang, Siqi Ma, Peigang He, Paolo Colombo, Yu Zhou
Summary: This study systematically investigated the curing behavior, thermal evolution, phase development, and hygroscopic behavior of acid aluminum phosphate (AAP) solutions with different P/Al ratios. The hygroscopic mechanism of AAP and its derived aluminum phosphate was elucidated, and a dynamic relationship between hygroscopic mechanism, moisture absorption rate, microstructure, and phase composition was established. The results showed that AAP and its derived aluminum phosphate exhibit hygroscopicity, and the hygroscopicity can be controlled by adjusting the P/Al ratio and the calcination temperature.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Ceramics
Hamada Elsayed, Franco Matias Stabile, Gianpaolo Savio, Enrico Bernardo
Summary: This study presents a new approach for incorporating CaO and MgO into silicone/acrylate blend for the fabrication of silicate bioceramic scaffolds. The scaffolds with fine crystal distribution were successfully produced by direct firing at 1100 degrees C. The strength-to-density ratio was controlled by modifying the scaffold's topology or adjusting the firing atmosphere.
Article
Multidisciplinary Sciences
Anna Mazzi, Michela Sciarrone, Enrico Bernardo
Summary: Using the alkali activation process to produce glass foam from waste glass can avoid the drawbacks in the purity of starting feedstock and has the potential to reduce environmental impacts. This study conducted a life cycle assessment to analyze the environmental profile of glass foam production, considering transportation, production process, and end-of-life stages. The results show that the production phase has the greatest contribution to overall environmental impacts, with electricity consumption and surfactant usage being the main factors. Sensitivity analyses suggest that minimizing distances in the supply chain and using renewable energy sources can significantly improve the environmental profile.
