Rapid Hydrothermal Synthesis of Submillimeter Ultralong Flexible Hydroxyapatite Fiber Using Different pH Regulators

Mei-li Qi, Gui-yong Xiao, Yu-peng Lu

Fig. 3 Typical FE-SEM images of the flexible fibers obtained at 180 °C for 0.5 h by different pH regulators: a urea, b acetamide, c propanamide