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Colorimetric characterization of thermochromic composites with different molar ratios of components
Authors: Panák Ondrej | Hauptman Nina | Gunde Marta Klanjšek | Kaplanová Marie
Year: 2012
Type of publication: článek v odborném periodiku
Name of source: Journal of Print and Media Technology Research
Publisher name: IARIGAI (International Association of Research Organizations for the Information, Media and Graphic Arts Industries)
Place: Darmstadt
Page from-to: 113-120
Titles:
Language Name Abstract Keywords
cze Kolorimetrické vyhodnocení termochromních systémů s různým poměrem jejich složek Bylo připraveno několik termochromních systému s laktonem krystalové violeti jako barviva, bisfenolu A jako vývojky a octadekanolu jako rozpouštědla. Studovány byly termochromní vlastnosti a jejich závislost na složení termochromního systému. lakton krystalové violeti, bisfenol A, barevná hystereze, barevný kontrast, termochromizmus
eng Colorimetric characterization of thermochromic composites with different molar ratios of components The thermochromic composites used for this study were prepared by applying crystal violet lactone as a leuco dye together with bisphenol A of different molar ratios as a developer and 1-octadecanol as a solvent. The colorimetric properties of all composites were measured during heating and cooling within a broad temperature range, which makes it possible to characterize entire colour hysteresis loops. It was demonstrated how these properties depend on the developer and solvent ratios. The investigations concentrated in particular on the total colour contrast between the coloured and the discoloured states, the temperature interval needed for the colour to change, and the width of the hysteresis loop. It was shown that composites with the same colorimetric properties could be prepared by applying a relatively broad range of dye/developer concentration ratios. crystal violet lactone, bisphenol A, colour hysteresis, total colour contrast, thermochromism

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