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Relevant bibliographies by topics / Leuco dye-based thermochromic inks

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Academic literature on the topic 'Leuco dye-based thermochromic inks'

Author: Grafiati

Published: 4 June 2021

Last updated: 13 February 2022

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Journal articles on the topic "Leuco dye-based thermochromic inks"

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Kapović, Dominik, Mirela Rožić, Marina Vukoje, and Branka Lozo. "Ink tack stability readings of the offset thermochromic inks." Pigment & Resin Technology 48, no. 4 (July 1, 2019): 309–16. http://dx.doi.org/10.1108/prt-07-2018-0064.

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Purpose This paper aims to analyse the tack stability measurement readings of thermochromic offset inks. For this purpose, three reversible leuco-dye formed thermochromic inks were used to evaluate their tack. The used inks differ in their activation temperature, colour, drying mechanism, viscosity and chemical content. Thermochromic offset inks differ from conventional inks in formulation and size of colourants due to the presence of the microcapsules. Design/methodology/approach Printing inks in offset lithography must have sufficient tack so they can be transported from a reservoir onto the substrate. The ink transfer takes place through the ink splitting by inking rollers, printing plate and blanket transport. An IGT Tackoscope device was used to produce the dynamic readings of ink tack as a function of distribution and splitting time. The data can be used for prediction of the ink press stability under controlled settings, such as temperature. Findings This research explains the temperature and velocity influence on the tack stability measurement readings of thermochromic inks. It also gives an insight of the chemical compounds that dictate the tack measuring reading results. Originality/value Development of new printing inks, such as thermochromic printing inks, may affect the printing of different products. The research was conducted due to a lack of available data for the tack of thermochromic inks.

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Bašnec, Kristina, Metka Hajzeri, and Marta Klanjšek Gunde. "Thermal and colour properties of leuco dye-based thermochromic composite with dodecanol solvent." Journal of Thermal Analysis and Calorimetry 127, no. 1 (July 7, 2016): 55–61. http://dx.doi.org/10.1007/s10973-016-5670-9.

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Panák, Ondrej, Markéta Držková, and Marie Kaplanová. "Insight into the evaluation of colour changes of leuco dye based thermochromic systems as a function of temperature." Dyes and Pigments 120 (September 2015): 279–87. http://dx.doi.org/10.1016/j.dyepig.2015.04.022.

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Gavara, Raquel, César A T. Laia, A. Jorge Parola, and Fernando Pina. "Formation of a leuco Spirolactone from 4-(2-Carboxyphenyl)-7-diethylamino-4′-dimethylamino-1-benzopyrylium: Design of a Phase-Change Thermochromic System Based on a Flavylium Dye." Chemistry - A European Journal 16, no. 26 (May 27, 2010): 7760–66. http://dx.doi.org/10.1002/chem.200903482.

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Sahebkar, Keon, Sharan Indrakar, Sesha Srinivasan, Sylvia Thomas, and Elias Stefanakos. "Electrospun microfibers with embedded leuco dye-based thermochromic material for textile applications." Journal of Industrial Textiles, January 11, 2021, 152808372098721. http://dx.doi.org/10.1177/1528083720987216.

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Electrospinning is an inexpensive and versatile technique for fabricating micro- and nano- scaled fibers. There have been limited attempts to employ it for the fabrication of thermochromic (TC) fibers, and the fabrication of a three-component (dye, developer, and solvent) TC material has required the use of a more complicated coaxial electrospinning technique. Herein, a simple and novel method for creating thermochromic fibers by electrospinning single strands of poly (methyl methacrylate) (PMMA) with embedded thermochromic powder of a polymer encapsulated three-component system was employed. Unlike past leuco dye-based thermochromic fibers, an unmodified syringe tip can be used for the spinning process and only one flow rate needs to be determined. A solution of solvent (either N-dimethylformamide or chloroform), PMMA, and a commercially available black thermochromic powder was prepared and spun using a custom-made electrospinning apparatus. The spun fibers exhibited a clear color transition from grey to white and had average diameters of 2.53 µm and 1.96 µm for chloroform and N-dimethylformamide based fibers, respectively. The fibers were characterized by scanning electron and optical microscopy to determine their morphology, Fourier transform infrared spectroscopy to determine their chemical composition, and differential scanning calorimetry and thermogravimetric analysis to characterize their thermal properties.

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Bašnec, Kristina, Lidija Slemenik Perše, Boštjan Šumiga, Miroslav Huskić, Anton Meden, Aleš Hladnik, Bojana Boh Podgornik, and Marta Klanjšek Gunde. "Relation between colour- and phase changes of a leuco dye-based thermochromic composite." Scientific Reports 8, no. 1 (April 3, 2018). http://dx.doi.org/10.1038/s41598-018-23789-2.

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Hussain, Mujtaba, Muhammad Ali Sikandar, Abdul Nasir, and Waqas Ahmed. "Effect of SiO2 coated leuco-dye based thermochromic pigment on the properties of Portland cement pastes." Journal of Building Engineering, November 2020, 102019. http://dx.doi.org/10.1016/j.jobe.2020.102019.

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Dissertations / Theses on the topic "Leuco dye-based thermochromic inks"

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Kooroshnia, Marjan. "Creating diverse colour-changing effects on textiles." Licentiate thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-3722.

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With the technological progress of materials science, the palette of colours with which to print on textiles has expanded beyond those with previously known properties and expressions to a new generation, with more advanced functionality and expressive properties. This new range of colours is characterised by their ability when printed on textiles to change colour in relation to external factors and internal programmes; for example, leuco dye-based thermochromic inks generally change colour in response to temperature fluctuations. This research explores the design properties and potentials of leuco dye-based thermochromic inks printed on textiles, with regard to creating a wider range of colour-changing effects for textile applications. The significance of this for textile design is related to the development of a methodology for designing dynamic surface patterns. The research was conducted by creating a series of design experiments using leuco dye-based thermochromic inks, which resulted in different recipes and methods, along with a pedagogical tool. The results highlighted the diverse colour-changing properties of leuco dye-based thermochromic inks, which have the potential to create more complex patterns on textiles. The outcome of this research proposes a foundation for textile designers with which to approach new ways of thinking and designing.

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Conference papers on the topic "Leuco dye-based thermochromic inks"

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Ban, Hiroshi, Yukio Komine, Tadao Takeda, and Shinji Nakamura. "Microthermal Imaging Based on the Transmission Change of a Thermochromic Dye Film." In ISTFA 1998. ASM International, 1998. http://dx.doi.org/10.31399/asm.cp.istfa1998p0017.

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Abstract We have developed a sensitive method for detecting hot spots in LSIs, which is called Dye Thermochromism Imaging (DTI). A key is a thermochromic dye film based on a leuco-dye/acid/modulator/ polymer system. The blue color of this film reversibly fades at temperatures near room temperature: its transmittance at 610 nm changes at a logarithmic slope of 0.35/°C. A differential local brightness increase in the image indicates a hot spot when an LSI is biased with a supply voltage. We observed a hot spot in a low power SRAM at supply voltages between 0.9 and 2 V and power dissipations between 0.072 and 1 mW using a 10-bit/12-bit dual mode CCD. Comparing DTI with fluorescent microthermal imaging (FMI), we found that DTI has several advantages with regard to temperature sensitivity, reproducibility in repeated measurements, instrumental setup, and speed of measuring.

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