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Stability of thermochromic printing inks
2010Thermochromic (TC) printing inks change their colour regarding the change in temperature. One of the most frequently used TC material in printing inks are leuco dyes. This TC composite usually consists of a colour former (leuco dye), a colour developer and a solvent, protected in polymer capsules.
Friškovec, Mojca +2 more
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Dynamic colorimetric properties of mixed thermochromic printing inks
Coloration Technology, 2011Leuco dye‐based thermochromic inks reversibly change from the coloured to the discoloured state in a defined, comparatively wide temperature region. Inside this region, the colour of a sample depends on the temperature and thermal history, which is known as the hysteresis effect. The colour of such a sample as a function of temperature has the shape of
Kulčar, Rahela +3 more
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Thermochromic inks – dynamic colour possibilities
2010Thermochromic inks are one of the major groups of colour-changing inks. This paper aims at discussing general aspects of thermochromic inks, dynamic colorimetric properties of leuco dye-based thermochromic inks, their stability and principle of variable-temperature colour measurement. We will analyse here a colorimetric properties of the screen-printed
Kulčar, Rahela +2 more
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Thermochromic Perovskite Inks for Reversible Smart Window Applications
Chemistry of Materials, 2017The authors acknowledge the financial support of King Abdullah University of Science and Technology (KAUST).
Michele De Bastiani +7 more
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Colorimetric properties of UV-thermochromic inks
2009The focus of this paper is on thermochromic inks that change colour in a controlled way when the temperature is varied. We will analyse here colorimetric properties of the screen-printed UV-curing leucodye thermochromic inks in red, blue and black shades with activation temperature of 31 °C.
Kulčar, Rahela +3 more
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Colour changes of UV-curable thermochromic inks
2009UV-curable leucodye-based thermochromic inks with activation temperature of 31 °C in blue, red and black shades were analysed. The colour of samples does not depend only on their temperature but also on thermal history – they show colour hysteresis. Similar hysteresis loops were obtained for the red and blue samples and narrower for the black sample ...
Kulčar, Rahela, Knešaurek, Nina
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Thermochromic printing inks for smart packaging applications
2014Thermochromic printing inks (TC inks) are the type of chromogenic or colour chang-ing inks that change colour under certain circumstances. The colour change in TC inks is caused by the exposure to temperature gradient. TC printing inks are one of the candidates for active and smart packaging of the future.
Kulčar, Rahela +4 more
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DETERMINATION OF PSEUDOESTROGENIC COMPOUNDS IN THERMOCHROMIC PRINTING INK
2021The use of thermochromic ink is growing daily, but they contain pseudoestrogenic compounds that have a harmful effect on the human health. Common pseudoestrogenic compounds found in thermochromic ink are bisphenol A and benzophenone. Bisphenol A has a role of the colour developer and benzophenone is used as a photo- initiator in the UV-curing ink ...
Vinković, Kristinka +2 more
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Thermochromic inks - Functional graphic application for sustainable packaging
2012Thermochromic inks are one of the major groups of colour-changing inks. The colour change in thermochromic inks is caused by exposure to different temperature. Inks that change colour under certain circumstances are finding increasing use in applications such as security printing, brand protection or smart packaging. With thermochromic inks application,
Strižić Jakovljević, Maja +1 more
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Optical properties of thermochromic liquid crystal printing inks
2013Thermochromic liquid crystal inks (TLCs) reflect incident light in a rather narrow spectral region. This phenomenon is caused by selective reflection of light on chiral (twisted) molecular structure which changes its distribution with temperature. The reflected light produces iridescent colour which is continuously shifted from red to blue part of the ...
Jakovljević, Maja +3 more
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