Fig. 2 (a) TGA curve of the precursor fibers that were electrospun from the sol containing 0.07 g•mlí1 PVP; (b) FT-IR spectrum of PVP fiber (1) and HA fibers (2) before calcination and (3) after calcination at 600 ÛC.
Fig. 2 (a) TGA curve of the precursor fibers that were electrospunfrom the sol containing 0.07 g•mlí1 PVP; (b) FT-IR spectrum ofPVP fiber (1) and HA fibers (2) before calcination and (3) aftercalcination at 600 ÛC.