Preparation of diatomite based nano-composite dental ceramic powders by layer-by-layer technique
10.3760/cma.j.issn.1673-4181.2011.03.004
- VernacularTitle:层层组装技术制备牙科硅藻土基纳米复相陶瓷粉体
- Author:
Xiaoli LU
;
Yunzhu QIAN
;
Mei LIU
;
Xuefeng ZHOU
;
Feimin ZHANG
;
Ning GU
- Publication Type:Journal Article
- Keywords:
Layer-by-layer technique;
Diatomite;
Dental Machinable Ceramic;
Nano-composite ceramic powders
- From:
International Journal of Biomedical Engineering
2011;34(3):145-149
- CountryChina
- Language:Chinese
-
Abstract:
Objective To prepare a novel bioactive and degradable scaffold with mineralized collagenpolyose based composite by biomimetic synthesis for bone tissue engineering and explore the compatibility of osteoblast culturing on the scaffold. Methods Two kinds of polyelectrolyte were assembled on the surface of diatomite particles in order to adsorbe on nano-zirconia through opposite charges. Zeta potential,particle size and size distribution were compared before and after the modification of diatomite; IR was used to analysis molecular structure of functional group changes on the surface of diatomite particles, nano-composite powder morphology was observed by SEM. Results Two kinds of the polyelectrolyte were successfully assembled on the surface of diatomite powders. Particle size and size distribution were significantly reduced, d (0.5) reduce from 16.421 μm to 0.420 μm. SEM showed the dispersion of the modified diatomite was improved and had a good adsorption with nano-zirconia. Conclusion Layer-by-layer technique could enhance the dispersion of diatomite-based dental ceramic powders as well as a good adsorption of nano-composite ceramic powder.
