Optical tools for high-throughput screening of abrasion resistance of combinatorial libraries of organic coatings

Radislav A. Potyrailo; Bret J. Chisholm; Daniel R. Olson; Michael J. Brennan; Chris A. Molaison

doi:10.1117/12.456105

14 February 2002 Optical tools for high-throughput screening of abrasion resistance of combinatorial libraries of organic coatings

Radislav A. Potyrailo, Bret J. Chisholm, Daniel R. Olson, Michael J. Brennan, Chris A. Molaison

Author Affiliations +

Proceedings Volume 4578, Fiber Optic Sensor Technology and Applications 2001; (2002) https://doi.org/10.1117/12.456105
Event: Environmental and Industrial Sensing, 2001, Boston, MA, United States

Abstract

Design, validation, and implementation of an optical spectroscopic system for high-throughput analysis of combinatorially developed protective organic coatings are reported. Our approach replaces labor-intensive coating evaluation steps with an automated system that rapidly analyzes 8x6 arrays of coating elements that are deposited on a plastic substrate. Each coating element of the library is 10 mm in diameter and 2 to 5 micrometers thick. Performance of coatings is evaluated with respect to their resistance to wear abrasion because this parameter is one of the primary considerations in end-use applications. Upon testing, the organic coatings undergo changes that are impossible to quantitatively predict using existing knowledge. Coatings are abraded using industry-accepted abrasion test methods at single-or multiple-abrasion conditions, followed by high- throughput analysis of abrasion-induced light scatter. The developed automated system is optimized for the analysis of diffusively scattered light that corresponds to 0 to 30% haze. System precision of 0.1 to 2.5% relative standard deviation provides capability for the reliable ranking of coatings performance. While the system was implemented for high-throughput screening of combinatorially developed organic protective coatings for automotive applications, it can be applied to a variety of other applications where materials ranking can be achieved using optical spectroscopic tools.

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Radislav A. Potyrailo, Bret J. Chisholm, Daniel R. Olson, Michael J. Brennan, and Chris A. Molaison "Optical tools for high-throughput screening of abrasion resistance of combinatorial libraries of organic coatings", Proc. SPIE 4578, Fiber Optic Sensor Technology and Applications 2001, (14 February 2002); https://doi.org/10.1117/12.456105

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