Article
Materials Science, Multidisciplinary
Yashar Rezaeipour, Parvin Alizadeh, Mozhgan Keshavarz
Summary: This study synthesized a bioactive glass and prepared composite scaffolds with different collagen concentrations. CSBG5 showed the best cell viability and adhesion, indicating its potential as a scaffold for uterine regeneration.
APPLIED MATERIALS TODAY
(2023)
Article
Chemistry, Physical
Narthana Kandhasamy, Gopal Ramalingam, Govindhasamy Murugadoss, Manavalan Rajesh Kumar, Gunasekaran Manibalan, Rajabathar JothiRamalingam, Hemraj M. Yadav
Summary: The study successfully synthesized highly uniform copper and zinc oxide anchored nanoparticles on the surface of silica using a sol-gel method. Detailed structural and compositional analyses were carried out using X-ray diffraction, X-ray photoelectron spectroscopy, Laser Raman, field emission scanning electron microscopy, and transmission electron microscopy. The charge-discharge results showed excellent performance in specific capacitance at high current densities for the composite materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
Shadpour Mallakpour, Mina Naghdi
Summary: A bone scaffold was fabricated using a hybrid of TiO2@LDH to leverage the advantages of both nanostructures, with LDH providing a suitable bed for TiO2 nanoparticles and Alg embedding them for stability. The scaffold showed excellent biomineralization and antibacterial properties, making it a promising candidate for bone tissue engineering.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Marcelo da Silva Mantini Viana, Thalita Marcolan Valverde, Breno Rocha Barrioni, Alfredo Miranda de Goes, Marcos Augusto de Sa, Marivalda de Magalhaes Pereira
Summary: This study obtained cobalt-containing nanoparticles with the potential to release pro-angiogenic ions using a sol-gel based method, which can be applied for tissue repair and tissue engineering.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Tengyu He, David G. Bradley, Ming Xu, Shu-Ting Ko, Baiyan Qi, Yi Li, Yong Cheng, Zhicheng Jin, Jiajing Zhou, Lekshmi Sasi, Lei Fu, Zhuohong Wu, Jingcheng Zhou, Wonjun Yim, Yu-Ci Chang, John Hanna, Jian Luo, Jesse Jokerst
Summary: Inorganic nanomaterials show promise in theranostics, but their non-degradability limits their translation. We developed degradable PEI/calcium phosphate micro/nano-composites inspired by the biosilicification process in diatoms. These composites exhibit versatile sizes and morphologies without causing cell cytotoxicity.
CHEMISTRY OF MATERIALS
(2022)
Article
Materials Science, Ceramics
Cansu Tasar, Batur Ercan
Summary: Different approaches were used to combine sol-gel synthesized bioactive glass and super-paramagnetic iron oxide nanoparticles, resulting in magnetic bioactive glass nanoparticle composites. The nanoparticles showed superparamagnetic behavior, promoted bone cell viability, and exhibited bioactive properties.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
E. Piatti, E. Verne, M. Miola
Summary: This study reports for the first time the sol-gel synthesis of bioactive glass nanoparticles containing both boron and copper oxides. The obtained nanoparticles have good morphology, composition, and bioactivity. Future investigations will focus on the biological characterizations of cytotoxicity, antibacterial properties, and pro-angiogenetic abilities.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Biomaterials
Roger Borges, Leticie Mendonca-Ferreira, Carlos Rettori, Isis S. O. Pereira, Francesco Baino, Juliana Marchi
Summary: This study reports the superparamagnetic properties of hematite nanocrystals grown in a 58S bioactive glass matrix derived from sol-gel synthesis for the first time. A thermal treatment leads to the growth of hematite crystals, giving the glass-ceramics superparamagnetic properties capable of producing heat under external magnetic fields, while maintaining materials bioactivity.
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
(2021)
Article
Biochemistry & Molecular Biology
Jian Xiao, Qianghua Wei, Jinhong Xue, Zide Yang, Zhicheng Deng, Fulai Zhao
Summary: In this study, a novel three-dimensional hollow mesoporous bioactive glass nanofiber scaffold was successfully synthesized and characterized. The scaffold exhibited nanofiber-like morphology and an interconnected three-dimensional network structure, with a large specific surface area and pore volume. It also showed excellent apatite-forming ability and cellular biocompatibility. The results suggest that this scaffold has great potential for bone tissue regeneration.
Article
Materials Science, Ceramics
Rina R. Tikare, Rohit R. Powar, Sharadchandra S. Patil, Dhanaji G. Kanase
Summary: Mixed metal oxides with different iron content (x = 0.2-1.0) were synthesized using sol-gel auto combustion process. The properties of the oxide materials were characterized using various techniques. The results showed that the replacement of aluminium ions affected the structure, bandgap, and crystallite size of the mixed metal oxides. The iron-substituted aluminate gas sensors exhibited good performance in detecting gases such as CO, H2S, and NO2.
CERAMICS INTERNATIONAL
(2023)
Article
Polymer Science
Mario Vale, Ana C. Marques
Summary: This article presents a methodology based on cryo-SEM for the direct and in situ visualization of 'wet' alkoxide-derived microstructures to study the complex process of MICROSCAFS (R) generation.
Article
Chemistry, Physical
Aylin M. Deliormanli, Begum Rahman
Summary: Superparamagnetic-fluorescent bioactive glasses were fabricated by incorporating maghemite nanoparticles and rare earth element ions into bioactive glasses. The morphological, structural, magnetic, and luminescence properties of the glasses were investigated using different techniques. Results showed that all the glasses had superparamagnetic properties and fluorescence behavior, with the fibrous glass samples showing the highest hydroxyapatite formation rates due to their larger surface area.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Ceramics
Ananthakrishnan Nitu, Ananthakrishnan Srinivasan
Summary: Magnetic interactions in sol-gel-derived bioactive magnetic glass-ceramics (MGCs) were studied using EPR, magnetic susceptibility, and magnetization techniques. The intensity and linewidth of resonance absorptions showed composition dependence. Dipolar interaction dominated in MGC samples with iron oxide content ≤ 4 wt.%, while a crossover to super-exchange interaction occurred in samples with higher iron oxide content. The magnetic behavior differed between MGC samples with iron oxide content ≤ 6 and ≥ 8 wt.%, with the latter exhibiting superparamagnetic behavior correlated with the percentage of magnetic phases present.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Cuilian Wen, Nuonan Bai, Lijin Luo, Jianxia Ye, Xuan Zhan, Yinggan Zhang, Baisheng Sa
Summary: Silicate bioglass is essential in bone engineering for its bioactivity and osteogenic effects. The study synthesized hydroxyapatite-like bioactive glass based on the xSiO2-CaO-P2O5 system and investigated its structural evolution, apatite-forming ability, and cytotoxicity. Higher heat treatment temperature and lower SiO2 content increase crystallinity tendency and sample compactness, with 30Si sample showing remarkable mesoporous structures and high specific surface area, demonstrating excellent hydroxyapatite formation and no inhibitory effect on hPDLCs.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Ehsan Vafa, Reza Bazargan-Lari, Mohammad Ebrahim Bahrololoom
Summary: This study compared two different types of 45S5 bioactive glass-ceramic prepared with two different catalysts, and found that the Homemade Vinegar Catalyzed Bioactive Glass (HMVCBG) had more uniformity, larger specific surface area, and higher bioactivity levels compared to the traditional nitric acid catalyzed bioactive glass.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Mechanics
Monika Ostapiuk, Monica Loureiro, Jaroslaw Bienias, Ana C. Marques
Summary: The study investigates the shear strengthening of fiber metal laminates with surface treated magnesium and carbon fiber reinforced epoxy (CFRP) laminates. It finds that configurations involving specific fiber orientation and MCs content result in the highest interlaminar shear strength and reduced damage in the FML structure. The presence of MCs creates interlocking and self-healing effects that contribute to the shear strengthening phenomenon observed in these FMLs.
COMPOSITE STRUCTURES
(2021)
Article
Multidisciplinary Sciences
Ana C. Marques, Mario Vale, Daniel Vicente, Murielle Schreck, Elena Tervoort, Markus Niederberger
Summary: In this study, inorganic silica microspheres are utilized as a platform for designing photocatalytic systems for wastewater treatment through solar-driven photocatalysis. The photocatalytically active microspheres are prepared by wet impregnation with TiO2 nanoparticles, leading to an increase in specific surface area and retention of macroporosity. The microspheres exhibit high photocatalytic activity and can be easily removed from the reaction medium, addressing typical challenges associated with TiO2 nanoparticles photocatalysts.
Article
Polymer Science
Mariana Costa, Isabel Pinho, Monica V. Loureiro, Ana C. Marques, Carla L. Simoes, Ricardo Simoes
Summary: This paper reports a continuous microfluidic approach for preparing microcapsules with a PUa/PU shell containing IPDI, and investigates critical operational parameters in the microfluidic process. The study contributes to the development of new sustainable and eco-friendly products.
Article
Materials Science, Multidisciplinary
Mahboobeh Attaei, Maryna G. Taryba, R. Abdul Shakoor, Ramazan Kahraman, Ana C. Marques, M. Fatima Montemor
Summary: In this study, a polyolefin coating modified with cerium oxide nanoparticles treated with THEEDA was used as a corrosion inhibitor for carbon steel. The coating showed excellent corrosion protection, with low-frequency impedance modulus around 1012 omega cm2 even after three months of immersion. The self-healing ability of the modified coating was confirmed through various localized electrochemical techniques, which demonstrated the synergistic protective role of ceria nanoparticles and THEEDA in inhibiting both cathodic and anodic activities.
Article
Engineering, Biomedical
Andreia S. Oliveira, Ines Ferreira, Ana C. Branco, Joao C. Silva, Carolina Costa, Pedro Nolasco, Ana C. Marques, Diana Silva, Rogerio Colaco, Celio G. Figueiredo-Pina, Ana P. Serro
Summary: Hydrogels have great potential as human cartilage replacement materials and drug delivery platforms. This study developed PCU-based hydrogels capable of releasing an anti-inflammatory drug for the first time. The addition of 15% CA and 2% CNT improved the mechanical properties of the hydrogels. The materials demonstrated controlled drug release for at least 4 days and high biocompatibility.
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS
(2022)
Article
Food Science & Technology
Carmo Serrano, Rafael Santos, Claudia Viegas, M. Margarida Sapata, R. Galhano dos Santos, J. A. D. Condeco, Ana C. Marques, J. C. Bordado
Summary: Edible films, developed with starch, were used as packaging to extend the shelf life of food products by inhibiting moisture transfer. The pea starch film showed better resistance against water and microbial development, delaying moisture transfer and enhancing the sensory characteristics of the food products.
INTERNATIONAL JOURNAL OF GASTRONOMY AND FOOD SCIENCE
(2022)
Article
Biochemistry & Molecular Biology
Andreia S. Oliveira, Joao C. Silva, Monica Loureiro, Ana C. Marques, Nicholas A. Kotov, Rogerio Colaco, Ana P. Serro
Summary: Poly(p-phenylene-2,6-benzobisoxazole) (PBO) nanofibers combined with polyvinyl alcohol (PVA) form a super-strong structure with high water content, high mechanical stiffness, low friction, and excellent biocompatibility, surpassing most existing hydrogels. These PVA-PBO composites have potential applications in load-bearing tissues design and other industrial fields requiring high thermal and mechanical resistance, as well as pH responsiveness functionality.
MACROMOLECULAR BIOSCIENCE
(2023)
Article
Polymer Science
Antonio Aguiar, Antonio Mariquito, Diogo Goncalves, Isabel Pinho, Ana C. Marques
Summary: This study presents the encapsulation and protection of isocyanate derivatives using a biodegradable polymer called PBAT for the first time. Spherical and core-shell microcapsules (MCs) with a regular surface, thin shell, and high isocyanate loadings were produced by an emulsion system combined with the solvent evaporation method.
Article
Polymer Science
Monica V. Loureiro, Antonio Mariquito, Mario Vale, Joao C. Bordado, Isabel Pinho, Ana C. C. Marques
Summary: We report on the stabilization of an O/W emulsion to produce core-shell polyurea microcapsules containing IPDI. Different stabilizers were used to evaluate the emulsion stability and obtain high-quality microcapsules. The rheology modifier played a key role in maintaining droplet size and improving the stability of the emulsion during synthesis. The study highlights the importance of emulsion stability in controlling microcapsule morphology, size, and distribution for enhanced performance in adhesive formulations.
Article
Chemistry, Physical
Tomas Archer de Carvalho, Florindo Gaspar, Ana C. Marques, Artur Mateus
Summary: The widespread use of geopolymer cement (GPC) has been hindered by a lack of scientific knowledge regarding its synthesis process. A simple spectrophotometric method was used to determine the amounts of aluminate and silicate species released from precursors in alkaline dissolution tests, and it was found that the compressive strength of GPC mortars is linearly correlated with their estimated total amount of dissolved aluminosilicates. This method improves the accuracy of strength estimation compared to elemental analysis methods.
Article
Polymer Science
Fabio F. F. Garrudo, Giulia Filippone, Leonor Resina, Joao C. Silva, Frederico Barbosa, Luis F. V. Ferreira, Teresa Esteves, Ana Clara Marques, Jorge Morgado, Frederico Castelo Ferreira
Summary: This study successfully incorporated poly(ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) into Poly(acrylonitrile) (PAN) fibers for the first time. PAN was chosen as a carrier due to its biocompatibility and tunable chemical stability. The resulting PAN:PEDOT:PSS fibers showed enhanced electroconductivity and biocompatibility, making them suitable for neural tissue engineering and soft electronics.
Article
Polymer Science
Tiago A. R. Silva, Ana C. Marques, Rui G. dos Santos, Rana A. Shakoor, Maryna Taryba, Maria Fatima Montemor
Summary: Bio-based polyols were obtained from the thermochemical liquefaction of pinewood and Stipa tenacissima, and successfully used as a green raw material to produce bio-based polyurethane coatings. The coatings exhibited moderate thermal stability, mild hydrophobicity, and good corrosion protection properties. These BioPU coatings have great potential for various applications and further modification with bio-based fillers and corrosion inhibitors.
Article
Materials Science, Multidisciplinary
Frederico Barbosa, Fabio F. F. Garrudo, Paola S. Alberte, Leonor Resina, Marta S. Carvalho, Akhil Jain, Ana C. Marques, Francesc Estrany, Frankie J. Rawson, Carlos Aleman, Frederico Castelo Ferreira, Joao C. Silva
Summary: Osteoporotic-related fractures are a major cause of chronic disease morbidity in Europe and the US. Current clinical techniques for repairing fractures are not optimal, leading to an interest in bone tissue engineering strategies. In this study, we developed electroactive and osteoinductive nanofibers using hydroxyapatite-filled poly(vinylidene fluoride-co-tetrafluoroethylene) (PVDF-TrFE) to support bone regeneration.
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
(2023)
Article
Polymer Science
Mario Vale, Ana C. Marques
Summary: This article presents a methodology based on cryo-SEM for the direct and in situ visualization of 'wet' alkoxide-derived microstructures to study the complex process of MICROSCAFS (R) generation.
Article
Polymer Science
Tomas Pires, Andreia Sofia Oliveira, Ana Clara Marques, Madalena Salema-Oom, Celio G. Figueiredo-Pina, Diana Silva, Ana Paula Serro
Summary: In this study, a non-conventional sterilisation method, microwave, was found to be the most suitable for polyvinyl alcohol (PVA) hydrogel reinforced with poly(p-phenylene-2,6-benzobisoxazole) (PBO) nanofibres. The microwave sterilised PVA hydrogel showed improved mechanical properties and biocompatibility.