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EXPLORING MYTHS OF MEASURED AND PERCEIVED WHITENESS
 

Summary: EXPLORING MYTHS OF MEASURED AND
PERCEIVED WHITENESS
Burak Aksoy, Margaret K. Joyce and Paul D. Fleming*
Department of Paper Engineering, Chemical Engineering and Imaging
Center for Coating Development
Western Michigan University
Kalamazoo, MI 49008
* Corresponding author. Tel.: (269) 276 3511; fax: (269) 276 3501
E-mail address: dan.fleming@wmich.edu
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Abstract
Fluorescent Whitening Agents (FWA), dyes and colored pigments are used extensively in the
paper industry to enhance the appearance and optical performance of coated and uncoated papers. There
are several different systems in use for the description and specification of color and optical properties of
paper. CIE and TAPPI are the most commonly used color systems in the paper industry. In this study,
three different colorants (blue, black and red), and a FWA were added into a coating formulation at three
to five addition levels. Coated LWC papers were measured for their optical properties with two different
spectrophotometers and a brightness meter. The CIE whiteness formulation (1986) was analyzed on
slightly colored papers.
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Source: Abubakr, Said - Department of Paper Engineering, Chemical Engineering, and Imaging, Western Michigan University

 

Collections: Engineering