In vitro bioactivity studies of larnite and larnite/chitin composites prepared from biowaste for biomedical applications

Bulletin of materials science

RAJAN CHOUDHARY¹  ANJALI RANA¹  SASIKUMAR SWAMIAPPAN¹  SENTHIL KUMAR VENKATRAMAN¹ 

[1] Department of Chemistry, School of Advanced Sciences, VIT University, Vellore 632014, India$$Department of Chemistry, School of Advanced Sciences, VIT University, Vellore 632014, IndiaDepartment of Chemistry, School of Advanced Sciences, VIT University, Vellore 632014, India$$

关键词: Dicalcium silicate;    solâ€�?�gel processes;    chitin;    composites;    SEM;    apatite.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Larnite (Ca$_2$SiO$_4$) was synthesized by the sol�?�gel combustion process by using raw eggshell powder as a calcium source and urea as a fuel. The main focus of this work is to convert biowaste into a biomedical material ata low-processing temperature. X-ray diffraction (XRD) pattern confirms the phase purity of the larnite and Fourier transform infrared (FTIR) spectra confirms the presence of characteristic functional groups of larnite. Scanningelectron microscopy (SEM) image shows agglomerated particles with cauliflower-like morphology and energy dispersive X-ray spectroscopy (EDX) confirms the presence of the stoichiometric ratio of required elements. Atomicforcemicroscope (AFM) images reveal the presence of pores on the surface of spherical particles. Larnite/chitin composites were fabricated into scaffold with different ratios of bioceramic to biopolymer (70:30, 80:20) to investigatethe influence of the polymer content on the apatite formation ability in simulated body fluid (SBF) medium. XRDpattern and FTIR spectra of the scaffold immersed in SBF shows apatite deposition within 5 days. The deposition ofhydroxyapatite (HAP) on the scaffold surface increases with the increase in polymer content of the composite.

【 授权许可】

Unknown