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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 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.
Jakovljević, Maja +5 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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Dynamic colour and appearance of thermochromic offset inks
2010The application properties of offset-printable air-drying thermochromic inks in red, black and magenta colours were analysed. They have an activation temperature of 31C, according to the producer data. In similar-sized microcapsules the thermochromic composite is protected from the environment.
Kulčar, Rahela +5 more
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Determination of bisphenol A in thermochromic printing inks by HPLC
2015Bisphenol A (BPA ; Figure 1) is an industrial chemical with major applications in the production of polycarbonate plastics and epoxy resins. Polycarbonate is used in food storage containers, while epoxy resins are used in the internal coating for food and beverage cans.
Rožić, Mirela +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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The influence of thermochromic ink on recovered cardboard biodegradation
2016As the packaging industry is growing lately and the amount of packaging waste increases, it becomes one of the major environmental problems. Packaging waste comprising about one-third of all municipal solid waste, mainly plastic and paper based. Anaerobic degradation is one of the most environmentally friendly methods for solid organic waste treatment ...
Rožić, Mirela +2 more
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Some experimental properties on reversibility of leucodye thermochromic inks
2009UV-curable leucodye-based inks that change colour due to a change in temperature, also know as thermochromic inks, were analysed. Inks in black, blue and red hues with an activation temperature of 31 °C were applied. The colour of thermochromic samples is not depended only on their momentary temperature but also on their thermal history, thus showing ...
Lozo, Branka +2 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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Selective oxygen plasma etching of thermochromic printing inks
2010Selective etching with oxygen plasma is one of very few methods suitable for observation of pigments in dry coatings. The feasibility of this method for coating with microencapsulated organic chromogenic composite is studied here. The exposure time required to etch enough binder away is too long for particles’ polymer shells.
Hauptman, Nina +4 more
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