Article
Thermodynamics
Monika Szlachta, Klaudia Ordon, Katarzyna Nowicka, Kinga Pielichowska
Summary: The thermal properties of PU materials depend on the load of polysaccharides and bioceramics, with an increase in chitosan fraction leading to higher glass transition temperature and onset temperature of degradation. However, the presence of ceramics did not significantly impact the thermal properties of PU composites.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Materials Science, Multidisciplinary
Ravinder Kumar Chadha, Kanchan L. Singh, Chetan Sharma, Anirudh P. Singh, Vandana Naithani
Summary: The properties of different Sr-Zr-HAp.xZn(30-x)Si composites were investigated by X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectroscopy, hardness testing, and scanning electron microscopy. The composites sintered using microwave energy showed higher density and hardness values compared to conventionally sintered composites. The in vitro bioactivity of the samples was assessed by simulated body fluid immersion method, and the microstructural studies indicated the formation of apatite layer, demonstrating the bioactivity of the synthesized composites.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Applied
Katherine A. Pitrolino, Reda M. Felfel, Laura Macri Pellizzeri, Jane McLaren, Alexander A. Popov, Virginie Sottile, Colin A. Scotchford, Brigitte E. Scammell, George A. F. Roberts, David M. Grant
Summary: An innovative multi-layered chitosan scaffold was developed for repairing osteochondral defects, with a distinct gradient of pore size and the addition of nanohydroxyapatite for strength. The scaffold exhibited good mechanical performance under loading, supported attachment and proliferation of human mesenchymal stem cells, and facilitated osteogenic and chondrogenic differentiation in specific layers.
CARBOHYDRATE POLYMERS
(2022)
Article
Materials Science, Coatings & Films
Sandeep Singh, Gurpreet Singh, Niraj Bala
Summary: The study fabricated a composite coating of CS-HA-BG-Fe3O4 with bioactivity, high corrosion resistance, and excellent cell proliferation, suitable for biomedical applications.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Tanatsaparn Tithito, Chantiga Choochottiros, Jirawan Thongbunchoo, Narattaphol Charoenphandhu, Nateetip Krishnamra, Weeraphat Pon-On
Summary: This study fabricated a composite scaffold of trace element-incorporated hydroxyapatite (THA) integrated bioactive gel (BioGel), which showed desirable porous structure and mechanical strength. It was found to effectively promote bone formation and attachment of osteoblast-like cells.
Article
Biophysics
Yirui Lv, Yujia Chen, Yaping Zheng, Qingxin Li, Ting Lei, Ping Yin
Summary: The study prepared Mg, Zn, and Ce-doped CuO/HA composites with significant antibacterial activity and ability to promote the proliferation of osteosarcoma cells. Increasing the loading amount of doped CuO led to higher concentrations of Cu2+ ions and doping ions in the composites, which exhibited improved antibacterial properties.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2022)
Article
Polymer Science
Fathia Rahmani, Omar Larbi Bouamrane, Amina Ben Bouabdallah, Leonard I. Atanase, Abdelkader Hellal, Aurelian Nichita Apintiliesei
Summary: Chitosan films coated with calcium phosphate were studied to mimic the formation of nanohydroxyapatite. Various testing methods confirmed the induction and control of the calcium phosphate coating. In addition, the antimicrobial activity of the phosphorylated derivatives of chitosan was evaluated, showing potential use as dental substitute materials.
Article
Chemistry, Physical
Wei Lu, Yinling Zhang, Taolei Wang
Summary: This paper investigates the merging mechanism of Mg-Zn and HA particles in Mg-Zn/HA composites prepared using powder metallurgy. The distribution of HA in the matrix is examined using SEM and micro-CT images, and the mechanical properties and biocompatibility of the composites are discussed in detail. The results highlight the importance of optimizing the HA content in Mg-Zn/HA composites for bone implants, with composites containing a moderate HA content showing the most promising characteristics.
Article
Multidisciplinary Sciences
Salim Levent Aktug, Salih Durdu, Selin Kalkan, Kultigin Cavusoglu, Metin Usta
Summary: The Ca-based porous and rough bioceramic surfaces were coated onto zirconium by micro-arc oxidation, and then covered with an antimicrobial chitosan layer to create a composite material suitable for implant applications. The presence of chitosan significantly enhanced the in vitro bioactivity and reduced microbial adhesion for Staphylococcus aureus and Escherichia coli.
SCIENTIFIC REPORTS
(2021)
Article
Biochemistry & Molecular Biology
Robert Adamski, Dorota Siuta
Summary: Novel bioactive composites based on chitosan and non-organic silica were fabricated using the sol-gel method, reinforced with calcium beta-glycerophosphate, sodium beta-glycerophosphate pentahydrate, and hydroxyapatite powder. The mechanical properties of the hybrid composites were analyzed, microstructure visualized by SEM, molecular interactions examined with FTIR analysis, and biocompatibility evaluated. The developed composite showed well-developed surface porosity that positively influenced cell proliferation and growth, as well as mechanical properties suitable for tissue engineering applications.
Article
Chemistry, Physical
Zhenyu Ding, Qian Peng, Jun Zuo, Yuehong Wang, Hongbo Zhou, Zhangui Tang
Summary: This paper investigates the osteogenesis performance of the boronized Ti6Al4V/HA composite and confirms its potential as a highly promising dental implant based on both cell experiments in vitro and animal experiments in vivo. The composite exhibited the best inductive osteogenesis potential, promoting early osteogenic differentiation of osteoblasts, and had the highest new bone formation potential and best osseointegration property after implantation.
Article
Materials Science, Multidisciplinary
Ning Guo, Hui-Zhen Shen, Ping Shen
Summary: The novel technique of cold sintering process (CSP) was introduced for the preparation of high-performance chitosan/hydroxyapatite bulk materials, showing significantly improved mechanical properties compared to conventional cold pressing. The cold-sintered samples also exhibited good biological activity in a simulated body fluid environment, demonstrating CSP as a simple yet effective and economical method for developing high-performance organic/inorganic bio-composites.
Article
Materials Science, Multidisciplinary
Varun Prasath Padmanabhan, Natarajan Prakash, T. S. N. Sankara Narayanan, Ravichandran Kulandaivelu, Faruq Mohammad, Prasanna Kumar Obulapuram, Won Chun Oh, Suresh Sagadevan
Summary: This study investigates the influence of gum ghatti concentration on the porosity of hydroxyapatite, and observes superior properties for samples formed from higher GG concentration. The composite exhibits bioactivity and controlled drug release, with the potential for biomedical applications demonstrated through antimicrobial and cytotoxic tests.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Engineering, Biomedical
Jeevan Jyoti, Abhimanyu Kiran, Manjit Sandhu, Amit Kumar, Bhanu Pratap Singh, Navin Kumar
Summary: Hydroxyapatite (HAP) is a promising material for bone growth and tissue repair due to its similarity to natural apatite. However, its brittleness and poor mechanical properties have limited its clinical applications. Carbon nanofiller reinforced HAP composites, particularly those with GCNTs, show improved nanomechanical properties and biocompatibility, with potential for bone repair and regeneration.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2021)
Article
Dentistry, Oral Surgery & Medicine
Georgia Vagropoulou, Maria Trentsiou, Anthie Georgopoulou, Eleni Papachristou, Oleg Prymak, Aristeidis Kritis, Matthias Epple, Maria Chatzinikolaidou, Athina Bakopoulou, Petros Koidis
Summary: This study demonstrates the potential of hybrid chitosan/gelatin/nanohydroxyapatite scaffolds to support viability and proliferation of dental pulp stem cells, inducing odontogenic differentiation and in vitro biomineralization without the addition of any inductive factors. The results suggest a promising strategy for tissue engineering of mineralized dental tissues.
Article
Materials Science, Multidisciplinary
Gehan T. E-Bassyouni, Hanan H. Beherei, Khaled R. Mohamed, Sayed H. Kenawy
MATERIALS CHEMISTRY AND PHYSICS
(2016)
Article
Materials Science, Ceramics
Abeer A. El Kady, Khaled R. Mohamed, Gehan T. El-Bassyouni
CERAMICS INTERNATIONAL
(2009)
Article
Materials Science, Ceramics
Khaled R. Mohamed, Zenab M. El-Rashidy, Aida A. Salama
CERAMICS INTERNATIONAL
(2011)
Article
Polymer Science
A. A. Haroun, H. H. Beherei, M. A. Abd El-Ghaffar
JOURNAL OF APPLIED POLYMER SCIENCE
(2010)
Article
Materials Science, Multidisciplinary
Hanan H. Beheri, Khaled R. Mohamed, Gehan T. El-Bassyouni
MATERIALS & DESIGN
(2013)
Article
Materials Science, Multidisciplinary
Khaled R. Mohamed, Zenab M. El-Rashidy, Aida A. Salama
MATERIALS CHEMISTRY AND PHYSICS
(2011)
Article
Materials Science, Multidisciplinary
Khaled R. Mohamed, Sahar M. Mousa, Gehan T. El Bassyouni
MATERIALS RESEARCH BULLETIN
(2014)
Article
Materials Science, Biomaterials
Khaled R. Mohamed, Hanan H. Beherei, Gehan T. El Bassyouni, Nahed El Mahallawy
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
(2013)
Article
Chemistry, Multidisciplinary
K. R. Mohamed, Aida A. Salama, Zenab M. I. El-Rashidy
EGYPTIAN JOURNAL OF CHEMISTRY
(2012)