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Ceramics
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Innovative Research on Calcium Phosphates Based Ceramics
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Innovative Research on Calcium Phosphates Based Ceramics

A special issue of Ceramics (ISSN 2571-6131).

Deadline for manuscript submissions: closed (25 September 2023) | Viewed by 6789

Special Issue Editor

Dr. Tatiana Safronova

E-Mail Website
Guest Editor
Department of Chemistry, Lomonosov Moscow State University, Building, 3, Leninskie Gory, 1, 119991 Moscow, Russia
Interests: inorganic materials science; solid-state chemistry; ceramics; biomaterials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

I am pleased to invite you to submit manuscripts to a Special Issue dedicated to one of the current hot topics in material science worldwide: “Innovative Research on Calcium Phosphates Based Ceramics”. Suitable topics for original research articles, critical reviews and short communications include, but are not limited to: fine powder synthesis; powder systems for preceramic items molding; different methods of preceramic items molding, including additive manufacturing; special features of different sintering approaches; phase composition and microstructure of ceramics; properties of calcium phosphate ceramics, including important for implementation in medicine; materials in the different (also multi-component) oxide systems including CaO and P2O5.

Dr. Tatiana Safronova
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Ceramics is an international peer-reviewed open access quarterly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • ceramics
  • fine powder synthesis
  • ceramic processing
  • sintering
  • phase composition
  • microstructure
  • porous ceramics
  • biocompatible inorganic materials
  • composites
  • calcium phosphates

Published Papers (3 papers)

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Research

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13 pages, 3303 KiB  
Article
Hydroxyapatite-Resin Composites Produced by Vat Photopolymerization and Post-Processing via In Situ Hydrolysis of Alpha Tricalcium Phosphate
by Carolina Oliver-Urrutia, Lenka Drotárová, Sebastián Gascón-Pérez, Karel Slámečka, Simona Ravaszová, Ladislav Čelko and Edgar B. Montufar
Ceramics 2023, 6(4), 2282-2294; https://0-doi-org.brum.beds.ac.uk/10.3390/ceramics6040139 - 24 Nov 2023
Viewed by 1886
Abstract
Vat photopolymerization is an additive manufacturing technique that utilizes photosensitive resins to fabricate 3D polymeric objects with high precision. However, these objects often lack mechanical strength. This study investigated the strengthening of a resin based on epoxidized soybean oil acrylate, specifically designed for [...] Read more.
Vat photopolymerization is an additive manufacturing technique that utilizes photosensitive resins to fabricate 3D polymeric objects with high precision. However, these objects often lack mechanical strength. This study investigated the strengthening of a resin based on epoxidized soybean oil acrylate, specifically designed for vat photopolymerization, by the in situ formation of hydroxyapatite nanocrystals. First, a stable alpha tricalcium phosphate (α-TCP)-resin feedstock mixture was developed (~30 vol.% α-TCP), which proved suitable for fabricating monoliths as well as complex triply periodic minimal surface (gyroid, diamond, and Schwarz) porous structures through vat photopolymerization. The results demonstrated that the incorporation of α-TCP particles led to a significant mechanical improvement of the resin. Second, post-printing hydrothermal treatments were utilized to transform the α-TCP particles into hydroxyapatite crystals within the resin. It was observed that the space between hydroxyapatite crystals within the composites was occupied by the cured resin, resulting in a more compact, stronger, and mechanically more reliable material than the porous hydroxyapatite produced by the hydrolysis of α-TCP mixed with water. Moreover, water absorption during the hydrothermal treatments caused the plasticization of the cured resin. As a consequence, the hydroxyapatite-resin composites displayed slightly lower mechanical properties compared to the as-printed α-TCP-resin composite. Full article
(This article belongs to the Special Issue Innovative Research on Calcium Phosphates Based Ceramics)
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Review

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0 pages, 4520 KiB  
Review
Bioinspired Mechanical Materials—Development of High-Toughness Ceramics through Complexation of Calcium Phosphate and Organic Polymers
by Tadashi Mizutani and Yui Okuda
Ceramics 2023, 6(4), 2117-2133; https://0-doi-org.brum.beds.ac.uk/10.3390/ceramics6040130 - 30 Oct 2023
Cited by 1 | Viewed by 1737
Abstract
Inspired by the process of bone formation in living organisms, many studies have been conducted to develop organic–inorganic composite materials by preparing calcium phosphate crystals within solutions or dispersions of polymers with appropriate functional groups. Bones are composite materials consisting of organic polymers [...] Read more.
Inspired by the process of bone formation in living organisms, many studies have been conducted to develop organic–inorganic composite materials by preparing calcium phosphate crystals within solutions or dispersions of polymers with appropriate functional groups. Bones are composite materials consisting of organic polymers (mainly type I collagen), carbonated apatite, and water, with volume fractions of 35–45%, 35–45%, and 15–25%, respectively. Carbonated apatite in bone contributes to rigidity, while organic polymers and water contribute to toughness. The inorganic crystal, carbonated apatite, is a plate-shaped crystal with dimensions of 50 nm × 25 nm × 1–4 nm, generating a significant organic–inorganic interface, due to its nanoscale size. This interface is believed to absorb externally applied forces to dissipate mechanical energy to thermal energy. Creating such nanometer-scale structures using top-down approaches is challenging, making bottom-up methods, such as the coprecipitation of polymer and inorganic crystals, more suitable. In this account, efforts to develop eco-friendly mechanical materials using biomass, such as cellulose and starch, based on the bottom-up approach to bone-like composites are described. Full article
(This article belongs to the Special Issue Innovative Research on Calcium Phosphates Based Ceramics)
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27 pages, 4581 KiB  
Review
Nutrient-Doped Hydroxyapatite: Structure, Synthesis and Properties
by Mohamed Ammar, Sherif Ashraf and Jonas Baltrusaitis
Ceramics 2023, 6(3), 1799-1825; https://0-doi-org.brum.beds.ac.uk/10.3390/ceramics6030110 - 22 Aug 2023
Cited by 3 | Viewed by 2538
Abstract
Complex inorganic powders based on calcium phosphates have found a plethora of practical applications. Of particular interest are the CaO-P2O5 system-based multi-component material powders and granules as the source of major- and micronutrients for the plants. The emerging strategy is [...] Read more.
Complex inorganic powders based on calcium phosphates have found a plethora of practical applications. Of particular interest are the CaO-P2O5 system-based multi-component material powders and granules as the source of major- and micronutrients for the plants. The emerging strategy is to use nano fertilizers based on hydroxyapatite (HAP) for phosphorus and other nutrient delivery. The doping of micronutrients into HAP structure presents an interesting challenge in obtaining specific phase compositions of these calcium phosphates. Various techniques, including mechanochemical synthesis, have been employed to fabricate doped HAP. Mechanochemical synthesis is of particular interest in this review since it presents a relatively simple, scalable, and cost-effective method of calcium phosphate powder processing. The method involves the use of mechanical force to promote chemical reactions and create nanometric powders. This technique has been successfully applied to produce HAP nanoparticles alone, and HAP doped with other elements, such as zinc and magnesium. Nanofertilizers developed through mechanochemical synthesis can offer several advantages over conventional fertilizers. Their nanoscale size allows for rapid absorption and controlled release of nutrients, which leads to improved nutrient uptake efficiency by plants. Furthermore, the tailored properties of HAP-based nano fertilizers, such as controlled porosity and degradation levels, contribute to their effectiveness in providing plant nutrition. Full article
(This article belongs to the Special Issue Innovative Research on Calcium Phosphates Based Ceramics)
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