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Advanced Porous Biomaterials
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Advanced Porous Biomaterials

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Porous Materials".

Deadline for manuscript submissions: closed (20 February 2022) | Viewed by 5767

Special Issue Editor

Prof. Dr. Jarosław Jakubowicz

E-Mail Website1 Website2
Guest Editor
Institute of Materials Science and Engineering, Poznan University of Technology, Poznan, Poland
Interests: biomaterials; surface treatment; nanomaterials; materials synthesis
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Biomaterials are currently one of the most interesting groups of materials, which are extensively investigated and introduced to commercial applications. The latest achievements in materials technology have led to the development of biomaterials, in particular porous ones, allowing the introduction of new implants that support the osseointegration process and shortening the recovery process of patients. The porous structure leads to a lower modulus of elasticity of the implant, bringing its value closer to that of the human bone, ensures lower density and weight of the implant, and finally accelerates the process of osseointegration.

Porous biomaterials, however, leave challenges related to lower mechanical durability. Optimizing the production process, structure, and properties of porous biomaterials is a key challenge for successful and long-time porous implant use. Both bulk and surface porosity are useful in biomedical products. Bulk porosity ensures more empty interconnected spaces in the whole volume of the material, lower density, but unfortunately also lower implant strength. Surface porosity improves the osseointegration process by increasing the porosity of the surface layer only, whereas the solid core provides greater mechanical strength. Gradient porosity seems to be very important, as it enables more precise design of porous products properties. The development of advanced techniques, for example, based on modern additive technologies, for producing such gradient porous biomaterials will accelerate the use of high-quality porous biomaterial implants. It is significant that the porosity of biomaterials can be designed in all groups of engineering materials: metal, ceramic, and polymer, extending their biomedical application.

It is my pleasure to invite you to submit a manuscript to this Special Issue that is related to the above topic. Full papers, communications, and reviews are all welcomed.

Prof. Dr. Jarosław Jakubowicz
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. Materials is an international peer-reviewed open access semimonthly 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 2600 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

  • Porous biomaterials
  • Porous implants
  • Porous metallic biomaterials
  • Porous ceramic biomaterials
  • Porous polymer biomaterials
  • Processing of porous biomaterials
  • Properties of porous biomaterials
  • Bulk porosity in biomaterials
  • Surface porosity in biomaterials
  • Scaffolds

Published Papers (3 papers)

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Research

14 pages, 4727 KiB  
Article
Preparation and Properties of Bulk and Porous Ti-Ta-Ag Biomedical Alloys
by Grzegorz Adamek, Mikolaj Kozlowski, Adam Junka, Piotr Siwak and Jaroslaw Jakubowicz
Materials 2022, 15(12), 4332; https://doi.org/10.3390/ma15124332 - 18 Jun 2022
Cited by 2 | Viewed by 1549
Abstract
The paper presents the results of the preparation of bulk and porous Ti-Ta-Ag alloys. The first step of this study was the preparation of the powder alloys using mechanical alloying (MA). The second was hot-pressing consolidation and sintering with a space holder, which [...] Read more.
The paper presents the results of the preparation of bulk and porous Ti-Ta-Ag alloys. The first step of this study was the preparation of the powder alloys using mechanical alloying (MA). The second was hot-pressing consolidation and sintering with a space holder, which resulted in high-density and high-porosity (approximately 70%) samples, respectively. Porosity, morphology, mechanical properties, biocompatibility, and antibacterial behavior were investigated and related to the preparation procedures. The authors found that Ta and Ag heavily influence the microstructure and determine other biomaterial-related properties. These new materials showed positive behavior in the MTT assay, and antibacterial properties. Such materials could find applications in the production of hard tissue implants. Full article
(This article belongs to the Special Issue Advanced Porous Biomaterials)
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15 pages, 11169 KiB  
Article
Biomedical Ti-Nb-Zr Foams Prepared by Means of Thermal Dealloying Process and Electrochemical Modification
by Grzegorz Adamek, Adam Junka, Przemyslaw Wirstlein, Mieczyslawa U. Jurczyk, Piotr Siwak, Jeremiasz Koper and Jaroslaw Jakubowicz
Materials 2022, 15(6), 2130; https://doi.org/10.3390/ma15062130 - 14 Mar 2022
Cited by 4 | Viewed by 1672
Abstract
The paper presents results of preparation and modification of Ti20Nb5Zr foams by a thermal dealloying method followed by electrochemical modification. The first step of this study was the preparation of Ti20Nb5Zr30Mg nanopowder using mechanical alloying (MA). The second was forming green compacts by [...] Read more.
The paper presents results of preparation and modification of Ti20Nb5Zr foams by a thermal dealloying method followed by electrochemical modification. The first step of this study was the preparation of Ti20Nb5Zr30Mg nanopowder using mechanical alloying (MA). The second was forming green compacts by cold pressing and then sintering with magnesium dealloyed from the structure, which resulted in pores formation. The next step was surface modification by electrochemical etching and silver nanoparticle deposition. Porosity, morphology, mechanical properties as well as biocompatibility and antibacterial behavior were investigated. Titanium foam porosity up to approximately 60% and wide pore size distribution were successfully prepared. The new materials have shown positive behavior in the MTT assay as well as antibacterial properties. These results confirmed great potential for thermal dealloying in preparation of porous structures. Full article
(This article belongs to the Special Issue Advanced Porous Biomaterials)
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15 pages, 4128 KiB  
Article
The Effect of Cobalt on the Deformation Behaviour of a Porous TiNi-Based Alloy Obtained by Sintering
by Nadezhda Artyukhova, Sergey Anikeev, Vladimir Promakhov and Maxim Korobenkov
Materials 2021, 14(24), 7584; https://doi.org/10.3390/ma14247584 - 10 Dec 2021
Cited by 5 | Viewed by 1732
Abstract
This research investigates the effect of cobalt on the deformation behaviour of a porous TiNi-based alloy that was obtained by sintering. Porous TiNi-based alloys with cobalt additives, accounting for 0–2 at. % and with a pitch of 0.5, were obtained. The structural-phase state [...] Read more.
This research investigates the effect of cobalt on the deformation behaviour of a porous TiNi-based alloy that was obtained by sintering. Porous TiNi-based alloys with cobalt additives, accounting for 0–2 at. % and with a pitch of 0.5, were obtained. The structural-phase state of the porous material was researched by X-ray structural analysis. The effect of different amounts of Co (used as an alloying additive) on the deformation behaviour was investigated by tensile to fracture. The fractograms of fracture of the experimental samples were analysed using scanning electron microscopy. For the first time, the present research shows a diagram of the deformation of a porous TiNi-based alloy that was obtained by sintering under tensile. The stages of deformation were described according to the physical nature of the processes taking place. The effect of the cobalt-alloying additive on the change in the critical stress of martensitic shear was investigated. It was found that the behaviour of the concentration dependency of stress at concentrations under 1.5 at. % Co was determined by an increase in the stress in the TiNi solid solution. This phenomenon is attributed to the arrangement of Co atoms on the Ti sublattice, as well as an increase in the fraction of the B19′ phase in the matrix. The steep rise of the developed forces on the concentration dependency of the martensitic shear stress at 2 at. % Co is presumably attributed to the precipitation hardening of austenite due to the precipitation of finely dispersed coherent Ti3Ni4 phase following the decrease of fraction of martensite. An analysis of fractograms showed that as more cobalt was added, areas of fracture with traces of martensite plates of the B19′ phase started to prevail. At 2 at. % Co these plates fill almost the entire area of the fracture. The research findings presented in this work are of great importance, since they can be used to achieve the set of physical and mechanical properties required for the development of biocompatible materials for implantology. Full article
(This article belongs to the Special Issue Advanced Porous Biomaterials)
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