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Contrast ratio of colorant film: Theoretical consideration and effect of polymeric binder

Authors

  • Jong S. Park

    Corresponding author
    1. Laboratory of Polymer and Electronic Materials, Department of Textile Industry, Dong-A University, Busan 604-714, Korea
    • Laboratory of Polymer and Electronic Materials, Department of Textile Industry, Dong-A University, Busan 604-714, Korea
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Abstract

We made theoretical approaches concerning the optical property of a pigment-containing system to understand the conditions under which an enhanced contrast can be achieved. Maintaining a uniform distribution of pigment particles in thin film well, as in millbase dispersion, is considered critical for a higher contrast. As a specific case, we estimated the effect of a polymeric binder on the contrast ratio. Chemical composition of the dispersion binder has a huge effect, and carboxylate in its long side chain plays a favorable role. Using this binder, we were able to obtain a smooth surface and uniformity, and an enhancement of contrast ratio in the colorant film. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010

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