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master's thesis
Reakcije termokromnog otiska u funkciji indikatora okolišne temperature
Zagreb: University of Zagreb, Faculty of Graphic Arts, 2021. urn:nbn:hr:216:402699
Vrkić, Toni
University of Zagreb
Faculty of Graphic Arts

Institutional repository: Faculty of Graphic Arts Repository

Cite this document

Vrkić, T. (2021). Reakcije termokromnog otiska u funkciji indikatora okolišne temperature (Master's thesis). Zagreb: University of Zagreb, Faculty of Graphic Arts. Retrieved from https://urn.nsk.hr/urn:nbn:hr:216:402699

Vrkić, Toni. "Reakcije termokromnog otiska u funkciji indikatora okolišne temperature." Master's thesis, University of Zagreb, Faculty of Graphic Arts, 2021. https://urn.nsk.hr/urn:nbn:hr:216:402699

Vrkić, Toni. "Reakcije termokromnog otiska u funkciji indikatora okolišne temperature." Master's thesis, University of Zagreb, Faculty of Graphic Arts, 2021. https://urn.nsk.hr/urn:nbn:hr:216:402699

Vrkić, T. (2021). 'Reakcije termokromnog otiska u funkciji indikatora okolišne temperature', Master's thesis, University of Zagreb, Faculty of Graphic Arts, accessed 01 July 2024, https://urn.nsk.hr/urn:nbn:hr:216:402699

Vrkić T. Reakcije termokromnog otiska u funkciji indikatora okolišne temperature [Master's thesis]. Zagreb: University of Zagreb, Faculty of Graphic Arts; 2021 [cited 2024 July 01] Available at: https://urn.nsk.hr/urn:nbn:hr:216:402699

T. Vrkić, "Reakcije termokromnog otiska u funkciji indikatora okolišne temperature", Master's thesis, University of Zagreb, Faculty of Graphic Arts, Zagreb, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:216:402699

Metadata
TitleReakcije termokromnog otiska u funkciji indikatora okolišne temperature
AuthorToni Vrkić
MentorMarina Vukoje (mentor)
Committee memberIvana Bolanča Mirković (član povjerenstva)
Committee memberMarina Vukoje (član povjerenstva)
Committee memberRahela Kulčar (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Graphic Arts
Zagreb
Defense date and country2021-9-24, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Graphic Technology
Abstract
Sastav termokromne tiskarske boje uključuje termokromne mikrokapsule i vezivo. Termokromizam je pojava promjene boje kao rezultat faznog prijelaza uzrokovanog promjenom temperature. Reverzibilni termokromni organski pigment mijenja boju primjenom topline i vraća se u izvornu boju nakon hlađenja sustava. Termokromne mikrokapsule obično se sastoje od najmanje tri komponente - bojila, razvijača i otapala kapsuliranih u polimernu ovojnicu. Organski termokromni sustavi naširoko se koriste u različitim aplikacijama poput pametne ambalaže a u današnje vrijeme kao indikatori temperature. Njihovu primjenu ograničava loša stabilnost kada su izloženi UV zračenju i različitim kemikalijama. Ukoliko se koriste kao indikatori za ambalažu pića, mogu biti izloženi djelovanju različite koncentracije alkohola koji mogu utjecati na funkcionalnost tog istog indikatora. Prijašnja istraživanja su pokazala da utjecaj etanola smanjuje funkcionalnost termokromne boje tako što uništava polimernu ovojnicu mikrokapsule. Rezultati pokazuju da se izborom tiskovne podloge može utjecat na stabilnost termokromnog otiska prema djelovanju etanola.
Abstract (english)
The composition of the thermochromic printing ink includes thermochromic microcapsules and a binder. Thermochromism is the appearance of a change in color as a result of a phase transition caused by a change in temperature. The reversible thermochromic organic pigment changes color by exposure to heat and returns to its original color after cooling the system. Thermochromic microcapsules usually consist of at least three components - dyes, developers and solvents encapsulated in a polymer shell. Organic thermochromic systems are widely used in various applications such as smart packaging and nowadays as temperature indicators. Their application is limited by poor stability when exposed to UV radiation and various chemicals. If used as indicators for beverage packaging, they may be exposed to different concentrations of alcohol that may affect the functionality of that same indicator. Previous research has shown that the effect of ethanol reduces the functionality of thermochromic dye by destroying the polymer shell of the microcapsule. The results show that the printing substrate can affect the stability of the thermochromic print in reaction with ethanol.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:216:402699
Study programmeTitle: Graphic technology; specializations in: Graphic technology, Design of graphic products
Course: Graphic technology
Study programme type: university
Study level: graduate
Academic / professional title: sveučilišni/a magistar/magistra inženjer/inženjerka grafičke tehnologije (sveučilišni/a magistar/magistra inženjer/inženjerka grafičke tehnologije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2024-04-18 23:51:29