A Study on Production of Porous Biocomposites
The International Conference on Materials Science Mechanical and Automation Engineerings and Technology (IMSMATEC 2018), İzmir, Turkey, 10 - 12 April 2018, pp.401
- Publication Type: Conference Paper / Summary Text
- City: İzmir
- Country: Turkey
- Page Numbers: pp.401
- Istanbul University Affiliated: Yes
Abstract
Biomaterials are the components which can be used to repair or renew a damaged or non-functional tissue/organ. Biomaterials can be classified as bioinert, bioactive and bioresorbable depending on the tissue-material reactions. Especially, bioactive and bioresorbable type biomaterials draw attention due to enabling a shorter and effective healing process. However, there are factors such as porosity that can enhance the bioactivity behavior of the material by ensuring better integration between the
material and the host tissue. This research concentrates on production of porous biocomposite structures composed of bioinert alumina (α-Al2O3), bioactive hydroxyapatite (HA, Ca10(PO4)6(OH)2) and bioresorbable bioactive glass. HA powders were obtained following the practical wet chemical
precipitation technique while pure α-alumina powders were synthesized through the sol-gel process. Bioactive glass powders were prepared considering the well-known conventional melting&quenching method. Composite pellets were formed after the mixing-pressing and finally sintering (at 1250 °C for 1h) procedure. XRD, FT-IR, SEM-EDS analyses and apparent porosity measurements were performed to evaluate the properties of the composite samples. In-vitro bioactivity tests in phosphate buffered saline (PBS) were also done to observe the bioactivity character of the material. It is found that alumina-HA-bioactive glass biocomposite samples have ~ 28-30% apparent porosity and the initial in-vitro bioactivity tests exhibited promising results.