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Optical surface roughness study of starch acetate compacts
R Silvennoinen1, K E Peiponen, V Hyvärinen
1Väisälä Laboratory, Department of Physics, University of Joensuu, P.O. Box 111, FIN-80101, Joensuu, Finland. raimo.silvennoinen@joensuu.fi
International Journal of Pharmaceutics
|May 26, 1999
Summary
Optical surface roughness of starch acetate compacts was measured using laser specular reflection. Surface roughness was found to be approximately 1 micrometer, determined by fitting Gaussian and Lorentzian curves to intensity data.
Area of Science:
- Materials Science
- Optics
- Surface Science
Background:
- Starch acetate compacts are utilized in various applications.
- Characterizing surface properties is crucial for material performance.
- Optical methods offer non-destructive analysis of surface topography.
Purpose of the Study:
- To investigate the optical surface roughness of starch acetate compacts.
- To quantify surface roughness using laser-based techniques.
- To establish a relationship between optical data and surface topography.
Main Methods:
- Specular reflection of a laser beam was employed.
- Measurements were taken at varying angles of incidence.
- Intensity data was analyzed using Gaussian and Lorentzian curve fitting models.
Main Results:
- Optical surface roughness was determined to be on the order of 1 micrometer.
- The fitting models provided numerical values for surface roughness.
- The methodology proved effective for characterizing the samples.
Conclusions:
- The optical surface roughness of starch acetate compacts is approximately 1 micrometer.
- Laser specular reflection combined with curve fitting is a viable method for surface roughness assessment.
- Further studies could explore correlations with other material properties.