Glibo, Renato (2019) Reciklacija ireverzibilnih termokromnih tiskarskih boja. Master's thesis - Graduate Programme. Grafički fakultet. [Mentor: Bolanča Mirković, Ivana].
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Abstract
Termokromne tiskarske boje su posebne kromogene boje koje mijenjaju svoje obojenje izlaganjem pri određenoj temperaturi. Temperaturni raspon u kojem se odvija prijelaz boje obično se naziva temperatura aktivacije. Promjena boje može biti ireverzibilna (nepovratna) ili reverzibilna (povratna). Svojstvo ireverzibilne promjene boje u odnosu na temperaturno izlaganje tijekom vremena, omogućuje razvoj brojnih indikatora. Kao takvi se mogu koristiti za praćenje stanja skladištenja i prijevoza proizvoda osjetljivih na temperaturu, kao što su ohlađena i smrznuta hrana, lijekovi, kemikalije osjetljive na temperaturu ili biološki materijali, itd. Ostale primjene uključuju praćenje procesa koji zahtijevaju izlaganje visokoj temperaturi kao što je sterilizacija i kuhanje. Budući da je formulacija tiskarske boje bitan čimbenik u deinking procesu, cilj ovog istraživanja utvrđivanje efikasnost recikliranja ireverzibilnih termokromnih otisaka. Termokromne boje razlikuju se od konvencionalnih tiskarskih boji u formulaciji i veličini pigmenata zbog prisutnosti mikrokapsula koje su mnogo veće od konvencionalnih pigmentnih čestica. Kako bi se objasnilo ponašanje ovih boja u procesu recikliranja, također će biti ispitana hidrofobnost uzoraka, kao jednoj značajnog faktora u procesu recikliranja.
| Item Type: | Master's thesis - Graduate Programme |
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| Mentor name: | Bolanča Mirković, Ivana |
| Thesis Committee: | Banić, Dubravko and Bolanča Mirković, Ivana and Kulčar, Rahela |
| Defence date: | 18 July 2019 |
| Abstract in english: | Thermochromic printing inks are special chromogenic inks that change their colour by exposure at a certain temperature. The temperature range in which the color transition occurs is usually called the activation temperature. The color change can be irreversible or reversible. The property of irreversible ink change over temperature exposure over time allows the development of numerous indicators. As such, they can be used to monitor storage conditions and transport of temperature sensitive products such as chilled and frozen foods, medicines, temperature sensitive chemicals or biological materials, etc. Other applications include process monitoring that require high temperature exposure such as sterilization and cooking. Since the printing ink formulation is an important factor in the deinking process, the aim of this research is to determine the efficiency of deinkability of irreversible thermochromic prints. Thermochromic inks differ from conventional printing inks in formulation and pigment size due to the presence of microcapsules that are much larger than conventional pigment particles. In order to explain the behavior of these inks in the recycling process, hydrophobicity of the prints will be studies as well. |
| Uncontrolled Keywords: | termokromizam, recikliranje, deinking flotacija |
| Keywords in english: | thermochromism, recycling, deinking flotation |
| Subjects: | TECHNICAL SCIENCES > Graphic Technology |
| Institution: | Grafički fakultet |
| City: | Zagreb |
| Number of Pages: | 34 |
| Callnumber: | BOL 2019 GLI |
| Inventory number: | DB812 |
| Depositing User: | Nina Jelača |
| Status: | Unpublished |
| Date Deposited: | 10 Sep 2019 11:01 |
| Last Modified: | 10 Sep 2019 11:01 |
| URI: | http://eprints.grf.unizg.hr/id/eprint/3048 |
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