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Fourier transform infrared spectroscopy (FTIR) analysis of PVA sphere, doxo-loaded PVA sphere, D14-loaded PVA sphere and D14 and doxo-loaded PVA sphere. In the figure, the symbols represent ν—stretching, δ—bending, ρ—rocking, ω—wagging. Region (i) is water absorption and (ii) represents aromatic ketone—C-CO aryl skeletal vibration.
