The composition and morphology
of original cuttlebone and hydroxyapatite(HAP)-converted cuttlebone were
characterized by means of X-ray diffraction (XRD), Fourier transmission
infrared spectroscopy (FTIR), thermogravimetric-differential thermal analysis(TG-DTA) and scanning electron microscopy (SEM). The mechanism of self-assembly was also discussed. The results show that the mineral of original cuttlebone is rod-like aragonite polymorph of CaCO3 and the chamber-like macroporous architecture is its extrinsic feature. In phosphate solution, the interior aragonite
converts hydrothermally to HAP by a solid-state topotactic ion-exchange reaction in which the HAP retains the morphology and the orientation of the original aragonite. Meanwhile, the exterior aragonite converts hydrothermally to HAP via dissolution-recrystallization, with squama-like morphology. These squama-like HAP self-assemble to microspheres with hydrothermal reaction time prolonged.
LIU Jin-Hua
,
WANG Da-Zhi
. Cuttlebone and Its Hydrothermal Converting to Hydroxyapatite[J]. Journal of Inorganic Materials, 2006
, 21(2)
: 433
-440
.
DOI: 10.3724/SP.J.1077.2006.00433
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