Effects of solvents on properties of nanocrystalline hydroxyapatite produced from hydrothermal process |
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| Affiliation: | 1. Key Laboratory of Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430073, China;2. Key Laboratory of Novel Reactor and Green Chemical Technology of Hubei Province, Wuhan Institute of Technology, Wuhan 430073, China;3. School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430073, China;4. State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210009, Jiangsu, China;1. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Water and Soil Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, 712100 Shaanxi, P.R. China;2. The Key Laboratory of Water and Sediment Sciences, Ministry of Education, Department of Environmental Engineering, Peking University, Beijing 100871, China;1. Institute of Biomedical Engineering and Health Sciences, Changzhou University, Changzhou, Jiangsu 213164, China;2. School of Materials Science and Engineering, Changzhou University, Changzhou, Jiangsu 213164, China;3. Department of Mechanical, Industrial and Manufacturing Engineering, The University of Toledo, Toledo, OH 43606, USA;4. Division of Dentistry, The University of Toledo, Toledo, OH 43606, USA;1. Department of Manufacturing and Materials Engineering, Faculty of Engineering International Islamic University Malaysia, 50728 Kuala Lumpur, Malaysia;2. State Ministry for Research and Technology, Jakarta 10340, Indonesia;3. Centre of Advanced Manufacturing & Material Processing (AMMP), Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia;4. Division of Neurosurgery, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia;5. Centre for Ionics University of Malaya, Department of Physics, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia;6. Kyushu University, Fukuoka, Japan;1. Instituto de Cerámica y Vidrio (CSIC), C/Kelsen, 5, Madrid, Spain;2. Instituto Nacional del Carbón (CSIC), C/Francisco Pintado Fe, 26, Oviedo, Spain;3. AZUREBIO, Tres Cantos (Madrid), Spain |
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| Abstract: | Hydroxyapatite (HA) particles have been synthesised in isopropanol–water solvent via hydrothermal process. The influences of isopropanol on crystallisation, such as phase evolution, crystallite size, crystallinity degree, chemical composition, and agglomeration of the HA nanoparticles have been investigated by using XRD, FTIR, TEM, BET, TG-DSC and laser diffraction method. All HA nanoparticles prepared in the water–isopropanol mixed solvent have been found to be carbonated HA, and the amount of carbonate increased with increase of alcohol in the solvent. However, the crystallite size and crystallinity degree of the HA nanoparticles decreased with the addition of isopropanol. In addition, there was little change in morphology of HA particles produced in different solvents, though the aspect ratio of the HA increased slightly with increasing concentration of alcohol. The agglomeration was found to be mainly controlled by the zeta-potential and not by the change of solvent. |
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