Crystal Morphology of Hydroxyapatite Modulated by Glutamic Acid at Different Hydrothermal Temperatures

Abstract:

Large-sized hydroxyapatite (HA) crystals with different morphologies, such as whisker-like, tubular and plate-form shape were prepared at different hydrothermal temperatures. Reaction solutions with small concentration of Ca2+, PO43- and OH- ions were used for HA synthesis. Phase identifications and morphological characterizations indicated that HA crystal grew along c axis under the modulation of glutamic acid adsorbent. The formation mechanism was explained according to the interfacial structures between glutamic acid and HA, as well as thermodynamic and kinetic considerations of crystal nucleation and growth. Understanding the evolution of crystal morphology in a specified reaction solution might favor to control the shape of crystals by the hydrothermal method.

• Periodical: Advanced Materials Research (Volumes 463-464)
• Pages: 36-40
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.463-464.36
• Online since: February 2012
• Authors: Cheng Feng Li, Xiao Lu Ge, Shu Guang Liu, Fei Yu Liu
• Keywords: Biomaterial, Glutamic Acid, Hydrothermal, Hydroxyapatite (HAP), Supersaturate

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