Formation and characterization of silica-coated HAP particles
Nanophase hydroxyapatite (HAP) particles were coated with silica via the hydrolysis of tetraethyl orthosilicate after a dodecyl alcohol based esterification reaction. The nanocomposite particles were characterized by transmission electron spectroscopy, scanning electron microscopy, X-ray diffraction...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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De Gruyter
2012-06-01
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| Series: | Science and Engineering of Composite Materials |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/secm-2011-0124 |
| _version_ | 1818728941463011328 |
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| author | Wang Hongxin Chen Xiaoming Cheng Dongji |
| author_facet | Wang Hongxin Chen Xiaoming Cheng Dongji |
| author_sort | Wang Hongxin |
| collection | DOAJ |
| description | Nanophase hydroxyapatite (HAP) particles were coated with silica via the hydrolysis of tetraethyl orthosilicate after a dodecyl alcohol based esterification reaction. The nanocomposite particles were characterized by transmission electron spectroscopy, scanning electron microscopy, X-ray diffraction, Fourier transform infrared (FTIR) spectroscopy, thermogravimetry and differential scanning calorimetry, sedimentation time and zeta potential (ζ) studies. A sequential change in infrared spectral features characteristic of HAP was accompanied by an increase in features characteristic of silica as revealed by FTIR. The silica coating enhanced the colloidal stability of HAP in aqueous suspensions. This behavior can be explained based on a heterocoagulation coating mechanism in which silica clusters adsorb onto the HAP particle surface. |
| first_indexed | 2024-12-17T22:37:59Z |
| format | Article |
| id | doaj.art-e3f6a3cd1bf24d02908e00a0d3fc5c67 |
| institution | Directory Open Access Journal |
| issn | 0792-1233 2191-0359 |
| language | English |
| last_indexed | 2024-12-17T22:37:59Z |
| publishDate | 2012-06-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Science and Engineering of Composite Materials |
| spelling | doaj.art-e3f6a3cd1bf24d02908e00a0d3fc5c672022-12-21T21:30:02ZengDe GruyterScience and Engineering of Composite Materials0792-12332191-03592012-06-0119210711210.1515/secm-2011-0124Formation and characterization of silica-coated HAP particlesWang Hongxin0Chen Xiaoming1Cheng Dongji2Biomedical Materials and Engineering Research Center, Wuhan University of Technology, Wuhan 430070, ChinaBiomedical Materials and Engineering Research Center, Wuhan University of Technology, Wuhan 430070, ChinaDepartment of Mechanical and Electronic Engineering, West Anhui University, Liuan, Anhui 237012, ChinaNanophase hydroxyapatite (HAP) particles were coated with silica via the hydrolysis of tetraethyl orthosilicate after a dodecyl alcohol based esterification reaction. The nanocomposite particles were characterized by transmission electron spectroscopy, scanning electron microscopy, X-ray diffraction, Fourier transform infrared (FTIR) spectroscopy, thermogravimetry and differential scanning calorimetry, sedimentation time and zeta potential (ζ) studies. A sequential change in infrared spectral features characteristic of HAP was accompanied by an increase in features characteristic of silica as revealed by FTIR. The silica coating enhanced the colloidal stability of HAP in aqueous suspensions. This behavior can be explained based on a heterocoagulation coating mechanism in which silica clusters adsorb onto the HAP particle surface.https://doi.org/10.1515/secm-2011-0124composite particleshydroxyapatitemicro-encapsulationnanoparticlessilicasurface modification |
| spellingShingle | Wang Hongxin Chen Xiaoming Cheng Dongji Formation and characterization of silica-coated HAP particles Science and Engineering of Composite Materials composite particles hydroxyapatite micro-encapsulation nanoparticles silica surface modification |
| title | Formation and characterization of silica-coated HAP particles |
| title_full | Formation and characterization of silica-coated HAP particles |
| title_fullStr | Formation and characterization of silica-coated HAP particles |
| title_full_unstemmed | Formation and characterization of silica-coated HAP particles |
| title_short | Formation and characterization of silica-coated HAP particles |
| title_sort | formation and characterization of silica coated hap particles |
| topic | composite particles hydroxyapatite micro-encapsulation nanoparticles silica surface modification |
| url | https://doi.org/10.1515/secm-2011-0124 |
| work_keys_str_mv | AT wanghongxin formationandcharacterizationofsilicacoatedhapparticles AT chenxiaoming formationandcharacterizationofsilicacoatedhapparticles AT chengdongji formationandcharacterizationofsilicacoatedhapparticles |