Abstract
The crystallographic orientation relationship between hydroxyapatite (HAp) nanocrystals and poly (acrylic acid) (PAA) graftpolymer-modified poly (ethylene terephthalate) (PET) substrate was studied using transmission electron microscopy (TEM). We observed the microstructure of fabricated rod-like HAp nanocrystals and the interface of HAp/PET composite where, the HAp nanocrystals are bonded onto PAA graftpolymer-modified PET substrate. The selected-area electron diffraction (SAED) pattern of interface of the HAp/PET composite indicated that some low index planes in HAp prism plane tended to be contact plane with the PET substrate surface. In particular, the [1120] plane was distinctly found as the contact plane with PET substrate. In this material, it has been reported that the carboxyl groups of PAA graft-polymer are ionically-bonded with Ca ions on surface of the HAp nanocrystal. It was suggested that the periodic ionic arrangements of the [1120] plane play an important role on the bonding between the HAp nanocrystals and the carboxyl groups of graft-polymer on the PET substrate.
Original language | English |
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Pages (from-to) | 100-104 |
Number of pages | 5 |
Journal | Journal of the Ceramic Society of Japan |
Volume | 116 |
Issue number | 1349 |
DOIs | |
Publication status | Published - Jan 2008 |
Externally published | Yes |
Keywords
- Biomaterial
- Composite
- Hydroxyapatite
- Interface
- Transmission electron microscopy
ASJC Scopus subject areas
- Ceramics and Composites
- Chemistry(all)
- Condensed Matter Physics
- Materials Chemistry