Effect of Some Modifier Ions in CuO Doped Sodium Borosilicate Antibacterial Bioglass

Y. Sudhakar1,2, G. Sahaya Baskaran1,*, P. Syam Prasad3, D. Rajeswara Rao1 and G. Little Flower4

1Department of Physics, Andhra Loyola College, Vijayawada-520008, India

2Department of Physics, Acharya Nagarjuna University, Nagarjuna Nagar-522510, India

3Department of Physics, National Institute of Technology, Warangal-506004, India

4Department of Physics, Maris Stella College, Vijayawada-520008, India

*Corresponding author: E-mail: sbalc@rediffmail.com

Abstract

A set of sodium borosilicate glasses mixed with different modifier oxides, viz., Li2O, MgO, CaO and ZnO, doped with antimicrobial oxide viz. CuO were synthesized. The structural (FT-IR spectroscopy, SEM and XRD) and bioactivity studies of the glasses were carried out before and after 30 days of immersion in simulated body fluid (SBF) under static conditions. Optical absorption spectra of all the glasses exhibited a broad absorption band identified due to 2B1g2B2g octahedral transition of Cu2+ ions. Glass microstructure is analyzed using SEM images and XRD patterns to authenticate glass bioactivity (viz. to confirm whether there is formation of hydroxyapatite (HAp) layer on the surface). For further confirmation of the formation of HAp on the surface of the post immerse samples, the FTIR spectra were recorded. The spectra revealed some vibrational peaks of calcium phosphate. Solubility (weight loss due to immersion in SBF) percentage is found to be different for different modifiers mixed glasses containing antibacterial CuO. SEM results confirm apparent nodular calcium phosphate microcrystalites. It is observed that the addition of antimicrobial oxide has a positive effect on the bioactivity of glass and make these glasses as fourth-generation biomaterials, which are being extensively used to heal the wounds in the human body by facilitating the growth of soft tissues.

Keywords

Sodium borosilicate glasses, Hydroxyapatite, Antibacterial glass, Modifier oxides, Simulated body fluid.

   View Article PDF File Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.