Preparation and characterization of porous zinc prepared by spark plasma sintering as a material for biodegradable scaffolds

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F18%3A43914616" target="_blank" >RIV/60461373:22310/18:43914616 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/18:00499122 RIV/61389021:_____/18:00499122 RIV/60461373:22330/18:43914616

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.matchemphys.2017.10.008" target="_blank" >http://dx.doi.org/10.1016/j.matchemphys.2017.10.008</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.matchemphys.2017.10.008" target="_blank" >10.1016/j.matchemphys.2017.10.008</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Preparation and characterization of porous zinc prepared by spark plasma sintering as a material for biodegradable scaffolds

Popis výsledku v původním jazyce

Recently, zinc-based materials have been extensively investigated as materials suitable for the fabrication of biodegradable orthopedic implants. In this study, porous zinc was prepared as a material for implantation into trabecular bone using spark plasma sintering with different sizes of initial zinc powders, and microstructural, mechanical and corrosion characterizations of the prepared materials were performed. The porosity of the prepared porous samples was approximately 20%. The mechanical properties depended on the initial powder particle size, the pore size and distribution. By using a finer powder (FP), &lt;100 mu m in size, the compressive yield strength and the compressive modulus were approximately 31.2 MPa and 1.2 GPa, respectively. These values approach those of trabecular bone (1-12 MPa and 0.1-0.4 GPa). Moreover, the plastic deformation of FP materials occurred at almost constant stress similar to trabecular bone. The corrosion rates of the porous Zn were 0.6-0.8 mm/a and depended on the initial powder particle size, the pore size and distribution. After pre-incubation of the porous Zn in simulated body fluid (SBF), the Zn concentration in biological extracts was below the toxic limit of zinc for L929 cells. Based on the obtained results, we can estimate that the materials prepared from the finer zinc powder showed properties suitable for the fabrication of porous biodegradable orthopedic implants.

Název v anglickém jazyce

Preparation and characterization of porous zinc prepared by spark plasma sintering as a material for biodegradable scaffolds

Popis výsledku anglicky

Recently, zinc-based materials have been extensively investigated as materials suitable for the fabrication of biodegradable orthopedic implants. In this study, porous zinc was prepared as a material for implantation into trabecular bone using spark plasma sintering with different sizes of initial zinc powders, and microstructural, mechanical and corrosion characterizations of the prepared materials were performed. The porosity of the prepared porous samples was approximately 20%. The mechanical properties depended on the initial powder particle size, the pore size and distribution. By using a finer powder (FP), &lt;100 mu m in size, the compressive yield strength and the compressive modulus were approximately 31.2 MPa and 1.2 GPa, respectively. These values approach those of trabecular bone (1-12 MPa and 0.1-0.4 GPa). Moreover, the plastic deformation of FP materials occurred at almost constant stress similar to trabecular bone. The corrosion rates of the porous Zn were 0.6-0.8 mm/a and depended on the initial powder particle size, the pore size and distribution. After pre-incubation of the porous Zn in simulated body fluid (SBF), the Zn concentration in biological extracts was below the toxic limit of zinc for L929 cells. Based on the obtained results, we can estimate that the materials prepared from the finer zinc powder showed properties suitable for the fabrication of porous biodegradable orthopedic implants.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GBP108%2F12%2FG043" target="_blank" >GBP108/12/G043: Mikro- a nanokrystalické materiály s vysokým podílem rozhraní pro moderní strukturní aplikace, biodegradabilní implantáty a uchovávání vodíku</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Materials Chemistry and Physics

ISSN

0254-0584

e-ISSN

—

Svazek periodika

203

Číslo periodika v rámci svazku

january

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

10

Strana od-do

249-258

Kód UT WoS článku

000415771700030

EID výsledku v databázi Scopus

2-s2.0-85031926082