Figure 5.

FTIR spectra for filtration, floating control, and submerged control groups showing the mineral deposited on the scaffolds was characteristic of hydroxyapatite with carbonate peaks (ν_{3c P–O} 1032 cm⁻¹, ν_{1 P–O} 962 cm ⁻¹ ν_{4a O–P–O} 602 cm⁻¹, and ν_{4c O–P–O} 561 cm⁻¹ [filtration group only]) and carbonated apatite ( ${\nu }_{1{\text{CO}}_3^{2-}}$ 1465 cm⁻¹ [filtration and floating control groups]). Stronger peaks for the filtration group indicate the presence of more mineral.