Synthesis and Characterisation of Citric Acid Based Polyester-Hydroxyapatite Nanocomposites

Indira R.; Sivakumar E. K .T.; Hariharapriya G.; Jaisankar V.

Volume : III, Issue : VII, July - 2014

Synthesis and Characterisation of Citric Acid Based Polyester-Hydroxyapatite Nanocomposites

Indira R. , Sivakumar E. K . T. , Hariharapriya G. , Jaisankar V.

Abstract :

The incorporation of nanoscale hydroxyapatite (n-HAp) into biodegradable polymers can potentially mimic the native structure of bone and influence the mechanical properties and the extent of bioactivity. In this investigation, nanocomposites of poly(1,6-Hexanediol-Maleate-Citrate) (PHMC) containing 5, 10 and 15 wt% n-HAp were faicated and characterised. The polyester was characterized by solubility studies, 1H NMR and 13C NMR spectral studies. Fourier transform infrared (FT- IR) spectroscopy was performed to analyze the interactions between n-HAp and PHMC matrix. X-ray diffraction analysis was carried out to study the structural information of nanocomposite. Tensile tests were conducted to evaluate the mechanical properties of the nanocomposites and differential scanning calorimetry (DSC) was carried out to study the thermal properties of n-HAp/PHMC nanocomposites. The Young�s modulus and tensile strength of nanocomposites were increased with higher concentration of n-HAp. Thermal studies showed that the Tg of the nanocomposites decreased with increase in n-HAp contents. The morphological studies were characterized by SEM. This study provides an insight into how the hydroxyapatite nanoparticle content can modulate the physical properties of n-HAp/PHMC nanocomposites.