Publication detail

Functional properties of the leuco dye-based thermochromic printing inks

Year: 2011

Type of publication: článek ve sborníku

Name of source: TAGA 63rd Annual Technical Conference: conference proceedings

Publisher name: TAGA - Technical Association of the Graphic Arts

Place: Sewickley

Page from-to: 1-19

Titles:

Language	Name	Abstract	Keywords
cze	Funkční vlastnosti termochromních pigmentů na bázi leukobarviv	Termochomní systémy na bázi leukobarviv vykazují reverzibilní změnu. Uvedeny jsou způsoby a parametry kolorimetrického vyhodnocování těchto systémů. Rovněž je studována stabilita kapsulí vlivem oxidace a světla.	kolorimetrie, termochromizmus, kompozit, stabilita
eng	Functional properties of the leuco dye-based thermochromic printing inks	Leuco dye-based thermochromic printing inks are one of the candidates for active packaging of the future. Such an advanced application requires much more knowledge about these novel inks as it is currently provided by the manufacturers. Thermochromic inks reversibly change from colored to discolored state in a certain temperature region. Details of this change and the width of the temperature region required for it are characteristic properties of a selected ink. Inside this region the color of a sample depends on temperature and thermal history; this is a color hysteresis, which contains a sort of memory. The activation temperature, which is the only parameter given by the producer to describe the change of color, does not reveal any characteristic properties of this temperature dependent color loop. Therefore other parameters were introduced to characterize the analyzed thermochromic inks. Thermochromic material is leuco dye-based composite which is protected in round-shaped capsules.	thermochromic inks; stability; colorimetry

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