Biomimetic control on ceramics surfaces by polarization induction

通过极化感应对陶瓷表面进行仿生控制

• 批准号: 11650855
• 负责人: NAKAMURA Satoshi
• 金额: $ 1.92万
• 依托单位: Tokyo Medical and Dental University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11650855/
• 关键词: hydroxyapatite; Apatite; Polarization; BIomimetic; Sol-gel method; Cell culture

The conformation of organic compound deposited on hydroxyapatite (HAp) ceramics was manipulated by their surface charge induced by electrical polarization. The sintered HAp ceramics were electrically polarized in a d.c. field at 4O0℃. The organic layers on the HAp ceramics were deposited from a toluene solution of phenyltrichlorosilane (PTCS). The results of contact angle measurements and IR spectroscopy clarified the organic layer containing the fragments of PTCS.The amount of the obtained layer on the positively charged surface was those on the negatively charged and non-polarized surfaces. The thickness of the layer on the non-polarized surfaces was thinner than those on the polarized surfaces, based on the depth profiles of Ca2p and Si2p. Although the deposition prepared on the non-polarized HAp surfaces from the PTCS solution was supposed to be a self-assembled layer including of phenyl-Si bond, the layers on the polarized HAp were aggregated irregularly. Consequently, the HAp ceramic surface charge induced by the polarization altered the electrostatic interaction to the organic compounds in non-aqueous system.

沉积在羟基磷灰石（HAp）陶瓷上的有机化合物的构象是通过电极化引起的表面电荷来控制的。在 4O0℃ 的直流场中对烧结的 HAp 陶瓷进行电极化。HAp 陶瓷上的有机层是用甲苯沉积的。接触角测量和红外光谱的结果澄清了含有碎片的有机层。带正电的表面上所获得的层的量是带负电的和非极化表面上的层的量。基于深度，非极化表面上的层的厚度比极化表面上的层的厚度薄。尽管由 PTCS 溶液在非极化 HAp 表面上制备的沉积物被认为是包含苯基-Si 键的自组装层，但极化 HAp 上的层。不规则地聚集，极化引起的HAp陶瓷表面电荷改变了非水体系中有机化合物的静电相互作用。

项目成果

S.Nakamura: "Proton Transport Polarization and Deporaization of Hydroxyapatite Ceramics"J.Appl.Phys.. (印刷中). (2001)

S. Nakamura：“羟基磷灰石陶瓷的质子传输极化和脱孔”J. Appl.（出版中）。

S.Nakamura: "Giga-Enhancement of Hydroxyapatite Effective Range in Bone Marrow by Electrical Polarization"Trans.Mat.Res.Soc.Jpn.. 25(1). 165-168 (2000)

S.Nakamura：“通过电极化对骨髓中羟基磷灰石有效范围进行千兆增强”Trans.Mat.Res.Soc.Jpn.. 25(1)。

H.Takeda: "Dielectric Properties of Poled Hydroxyapatite Ceramics"Key Eng.Mater.. 181-182. 35-38 (2000)

H.Takeda：“极化羟基磷灰石陶瓷的介电性能”关键工程材料.. 181-182。

S.Nakamura: "Giga-Enhancement of Hydroxyapatite Effective Range in Bone Marrow by Electrical Polarization"Trans.Mat.Res.Soc.Jpn.. 25(1). 165-168 (2000)

S.Nakamura：“通过电极化对骨髓中羟基磷灰石有效范围进行千兆增强”Trans.Mat.Res.Soc.Jpn.. 25(1)。

M.Ohgaki: "Vectorial Effects on Selective cell Adhesion of Electrically poled Hydroxyapatite ceramics"Bioceramics. 12. 187-190 (1999)

M.Ohgaki：“矢量对极化羟基磷灰石陶瓷选择性细胞粘附的影响”生物陶瓷。