MENG Hei, XU Yong. Preparation of Polyelectrolyte microcapsules of TiO2 sunscreen cream[J]. Journal of Pharmaceutical Practice and Service, 2012, 30(1): 38-41. doi: 10.3969/j.issn.1006-0111.2012.01.010
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MENG Hei, XU Yong. Preparation of Polyelectrolyte microcapsules of TiO2 sunscreen cream[J]. Journal of Pharmaceutical Practice and Service, 2012, 30(1): 38-41. doi: 10.3969/j.issn.1006-0111.2012.01.010
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Preparation of Polyelectrolyte microcapsules of TiO2 sunscreen cream
- Received Date: 2011-08-22
- Rev Recd Date:
2011-11-01
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Abstract
Objective To investigate the preparation method, the structure and the sun protection factor (SPF) of the polyelectrolyte self-assembled microcapsules containing TiO2 nanoparticles. Methods Calcium carbonate was used as the core, and the semipermeable membrane outside the core was made of poly (sodium 4-styrenesulfonate) (PSS) and TiO2 depositing onto the core surface alternately through electrostatic attraction. The morphology and the structure of the microcapsules were obtained by confocal laser scanning microscopy and scanning electron microscopy. The SPF was tested by SPF-290 analytical system. Results The prepared microcapsules were well-shaped with a mean diameter of (5.46±1.05) μm. The SPF was 30.31±2.56. Conclusion It was indicated that in comparison with traditional TiO2 sunscreen cream, the polyelectrolyte microcapsules containing titania had powerful absorbance of the ultraviolet rays.
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