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Characterization of Coating Microstructure Using Laser Scanning Confocal Microscopy.


pdf icon Characterization of Coating Microstructure Using Laser Scanning Confocal Microscopy. (200 K)
Sung, L. P.; Nadal, M. E.; Stutzman, P. E.; McKnight, M. E.

Polymeric Materials: Science and Engineering (PMSE) Fall Meeting. Volume 83. Proceedings. American Chemical Society (ACS) Division of Polymeric Materials: Science and Engineering. August 20-24, 2000, Washington, DC, 343-344 pp, 2000.

Keywords:

coatings; appearance; bidirectional reflectance; laser scanning confocal microscopy; microstructure; lasers; microscopy; pigments

Abstract:

The appearance of coating materials depends on the physical attributes of the object's interaction with light. These physical attributes include the light source, the angle of illumination, the viewing angle, and the optical reflectance properties of the coating system resulting from its surface topography and subsurface microstructure. Identification and characterization of the microstructure of a coating are crucial for relating the microstructure to the optical reflectance properties and for predicting the appearance of a coating from its microstructure and its constituents. In this paper, we will demonstrate that laser scanning confocal microscopy (LSCM) is a powerful tool for characterizing microstructres of coatings. The microstructures measured using the LSCM will be presented and compared to the corresponding optical reflectance data obtained from NIST's bidirectional reflectance distribution function (BRDF) instrument.