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Fabrication of dispersible calcium phosphate nanocrystals via a modified Pechini method under non-stoichiometric conditions
https://osaka-dent.repo.nii.ac.jp/records/78
https://osaka-dent.repo.nii.ac.jp/records/7842f5718f-b562-464d-9cc9-8bd4549a4c3f
名前 / ファイル | ライセンス | アクション |
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学位論文 (687.4 kB)
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論文内容要旨・審査結果要旨 (193.1 kB)
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Item type | 学位論文 / Thesis or Dissertation(1) | |||||
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公開日 | 2016-08-01 | |||||
本文言語 | ||||||
言語 | eng | |||||
タイトル | ||||||
タイトル | Fabrication of dispersible calcium phosphate nanocrystals via a modified Pechini method under non-stoichiometric conditions | |||||
著者 |
⼤森, 裕⼦
× ⼤森, 裕⼦× Omori, Yuko |
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キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Acrylic Resins | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Citric Acid | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Ethylene Glycol | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Hydroxyapatites | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Nanoparticles | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Nanotechnology | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Particle Size | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_db06 | |||||
資源タイプ | doctoral thesis | |||||
アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Various techniques for preparing ceramic nanoparticles have been developed; however, most of them start from a preparation of precursor nanoparticles that are generally amorphous or in poorly crystallized phases. Thermal treatments used to obtain crystalline phases typically result in the sintering of the products into large polycrystals. In this study, we developed a process to fabricate dispersible hydroxyapatite (HAp; Ca10(PO4)6(OH)2) nanocrystals via a modified Pechini method, which is a sol-gel like solid-state synthesis method for the preparation of multicomponent oxides. We demonstrated that the HAp nanocrystals sintered into large polycrystals ranging in size from several tens to several hundreds of microns via a conventional Pechini method using the stoichiometric Ca/P molar ratio of 1.67. When the Ca/P molar ratio in the precursor was >1.67, a mixture of HAp nanocrystals and removable CaO matrix was obtained. The HAp nanocrystals were dispersed in aqueous media mostly in the form of nanoparticles when the amount of CaO matrix was sufficiently greater than the amount of HAp. | |||||
学位名 | ||||||
学位名 | 博士(歯学) | |||||
学位授与機関 | ||||||
学位授与機関識別子Scheme | kakenhi | |||||
学位授与機関識別子 | 34408 | |||||
学位授与機関名 | 大阪歯科大学 | |||||
学位授与年月日 | ||||||
学位授与年月日 | 2015-03-06 | |||||
学位授与番号 | ||||||
学位授与番号 | 甲第743号 |