Photochromic Responses and Stability of Functional Inks Applied on Sustainable Packaging Materials
Photochromism refers to a reversible colour change induced by the irradiation of photochromic materials with ultraviolet (UV) or visible light that reverts to the original colour after the light source is removed. This effect arises from chemical transformations between two isomers with different ab...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-01-01
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| Series: | Micro |
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| Online Access: | https://www.mdpi.com/2673-8023/4/1/3 |
| _version_ | 1797240036532420608 |
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| author | Sanja Mahović Poljaček Maja Strižić Jakovljević Tamara Tomašegović |
| author_facet | Sanja Mahović Poljaček Maja Strižić Jakovljević Tamara Tomašegović |
| author_sort | Sanja Mahović Poljaček |
| collection | DOAJ |
| description | Photochromism refers to a reversible colour change induced by the irradiation of photochromic materials with ultraviolet (UV) or visible light that reverts to the original colour after the light source is removed. This effect arises from chemical transformations between two isomers with different absorption spectra, involving processes like proton transfer, chemical-bond formation, and isomerisation. These photochromic inks, appearing as crystalline powders with micro-sized particles, require dissolution in a suitable matrix to achieve the colour change. Photochromic inks are used in security, as functional coatings for paper and packaging, in the fabric industry, and in other ways. This study examines the influence of varying concentrations of micro-sized photochromic pigments and different ink-coating thicknesses on the photochromic effect on sustainable paperboard substrates. Artificial ageing was performed to assess the photochromic response and lightfastness in relation to pigment concentration, ink-coating thickness, and the influence of the paperboard substrates. The results of this research could contribute to enhancing knowledge on employing photochromic inks for diverse packaging applications. |
| first_indexed | 2024-04-24T18:01:03Z |
| format | Article |
| id | doaj.art-f8cfa89b203c4295827f0b17efd410c9 |
| institution | Directory Open Access Journal |
| issn | 2673-8023 |
| language | English |
| last_indexed | 2024-04-24T18:01:03Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micro |
| spelling | doaj.art-f8cfa89b203c4295827f0b17efd410c92024-03-27T13:54:44ZengMDPI AGMicro2673-80232024-01-0141334810.3390/micro4010003Photochromic Responses and Stability of Functional Inks Applied on Sustainable Packaging MaterialsSanja Mahović Poljaček0Maja Strižić Jakovljević1Tamara Tomašegović2Faculty of Graphic Arts, University of Zagreb, Getaldićeva 2, 10000 Zagreb, CroatiaFaculty of Graphic Arts, University of Zagreb, Getaldićeva 2, 10000 Zagreb, CroatiaFaculty of Graphic Arts, University of Zagreb, Getaldićeva 2, 10000 Zagreb, CroatiaPhotochromism refers to a reversible colour change induced by the irradiation of photochromic materials with ultraviolet (UV) or visible light that reverts to the original colour after the light source is removed. This effect arises from chemical transformations between two isomers with different absorption spectra, involving processes like proton transfer, chemical-bond formation, and isomerisation. These photochromic inks, appearing as crystalline powders with micro-sized particles, require dissolution in a suitable matrix to achieve the colour change. Photochromic inks are used in security, as functional coatings for paper and packaging, in the fabric industry, and in other ways. This study examines the influence of varying concentrations of micro-sized photochromic pigments and different ink-coating thicknesses on the photochromic effect on sustainable paperboard substrates. Artificial ageing was performed to assess the photochromic response and lightfastness in relation to pigment concentration, ink-coating thickness, and the influence of the paperboard substrates. The results of this research could contribute to enhancing knowledge on employing photochromic inks for diverse packaging applications.https://www.mdpi.com/2673-8023/4/1/3photochromismfunctional inkspackaging paperboardsphotochromic responselightfastness |
| spellingShingle | Sanja Mahović Poljaček Maja Strižić Jakovljević Tamara Tomašegović Photochromic Responses and Stability of Functional Inks Applied on Sustainable Packaging Materials Micro photochromism functional inks packaging paperboards photochromic response lightfastness |
| title | Photochromic Responses and Stability of Functional Inks Applied on Sustainable Packaging Materials |
| title_full | Photochromic Responses and Stability of Functional Inks Applied on Sustainable Packaging Materials |
| title_fullStr | Photochromic Responses and Stability of Functional Inks Applied on Sustainable Packaging Materials |
| title_full_unstemmed | Photochromic Responses and Stability of Functional Inks Applied on Sustainable Packaging Materials |
| title_short | Photochromic Responses and Stability of Functional Inks Applied on Sustainable Packaging Materials |
| title_sort | photochromic responses and stability of functional inks applied on sustainable packaging materials |
| topic | photochromism functional inks packaging paperboards photochromic response lightfastness |
| url | https://www.mdpi.com/2673-8023/4/1/3 |
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