Combined colorimetric and thermal analyses of reversible thermochromic composites using crystal violet lactone as a colour former

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F16%3A39901343" target="_blank" >RIV/00216275:25310/16:39901343 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s10973-016-5857-0" target="_blank" >http://dx.doi.org/10.1007/s10973-016-5857-0</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10973-016-5857-0" target="_blank" >10.1007/s10973-016-5857-0</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Combined colorimetric and thermal analyses of reversible thermochromic composites using crystal violet lactone as a colour former

Popis výsledku v původním jazyce

In present study, the intention was to investigate how the colour change of thermochromic composites is connected with their phase transitions. Crystal violet lactone was used as a colour former and bisphenol A as a developer. Two co-solvents, 1-tetradecanol and 1-tetradecanoic acid, were selected due to the same length of the aliphatic chain and different functionality. Series of seven thermochromic systems varying in co-solvent's molar ratio were prepared for each type of the co-solvent. The colour change was measured by reflectance spectroscopy, and temperatures characterizing the dynamic colour change were computed from the cumulative colour difference function. The onset and endset temperatures of thermochromic system's phase transitions were obtained from DSC analyses. Connections between the fastest colour changes and the decolouration limits at raised temperatures to solid-solid, solid-liquid and liquid-solid transitions are demonstrated for both heating and cooling, respectively. Different behaviour of compared systems with alcoholic and acidic co-solvent is discussed as well.

Název v anglickém jazyce

Combined colorimetric and thermal analyses of reversible thermochromic composites using crystal violet lactone as a colour former

Popis výsledku anglicky

In present study, the intention was to investigate how the colour change of thermochromic composites is connected with their phase transitions. Crystal violet lactone was used as a colour former and bisphenol A as a developer. Two co-solvents, 1-tetradecanol and 1-tetradecanoic acid, were selected due to the same length of the aliphatic chain and different functionality. Series of seven thermochromic systems varying in co-solvent's molar ratio were prepared for each type of the co-solvent. The colour change was measured by reflectance spectroscopy, and temperatures characterizing the dynamic colour change were computed from the cumulative colour difference function. The onset and endset temperatures of thermochromic system's phase transitions were obtained from DSC analyses. Connections between the fastest colour changes and the decolouration limits at raised temperatures to solid-solid, solid-liquid and liquid-solid transitions are demonstrated for both heating and cooling, respectively. Different behaviour of compared systems with alcoholic and acidic co-solvent is discussed as well.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JJ - Ostatní materiály

OECD FORD obor

—

Projekt

<a href="/cs/project/LD14098" target="_blank" >LD14098: Tištěná elektronika a inteligentní obaly</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Thermal Analysis and Calorimetry

ISSN

1388-6150

e-ISSN

—

Svazek periodika

127

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

"633?640"

Kód UT WoS článku

000392337000070

EID výsledku v databázi Scopus

2-s2.0-84991387647