Effect of Paper Surface Properties on Ink Color Change, Print Gloss and Light Fastness Resistance

Aydemir, Cem; Kašiković, Nemanja; Horváth, Csaba; Đurđević, Stefan

doi:10.35812/cellulosechemtechnol.2021.55.14

Cited by 11 publications

(4 citation statements)

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“…Paper is a compelling choice: it is sustainable, biodegradable, highly recycled, and more cost effective (∼0.1 cent dm −2 ) compared to commonly used plastics such as PET (≈2 cent dm −2 ) and PI (∼30 cent dm −2 ) [12]. Nonetheless, paper substrates have not yet replaced plastics because the porous microstructure of paper causes the imbibition and wicking of functional inks, which compromises printability and resolution [12][13][14][15][16][17][18]. Furthermore, an ideal green process for end-of-life recycling should separate and reuse electronic materials and recycle the substrate.…”

Section: Introductionmentioning

confidence: 99%

Shellac-paper composite as a green substrate for printed electronics

Hussein

Schlingman

Noade

et al. 2022

Flex. Print. Electron.

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Printed electronic devices that sense and communicate data will become ubiquitous as the Internet of Things continues to grow. Devices that are low cost and disposable will revolutionize areas such as smart packaging, but a major challenge in this field is the reliance on plastic substrates such as polyethylene terephthalate. Plastics discarded in landfills degrade to form micro- and nanoplastics that are hazardous to humans, animals, and aquatic systems. Replacing plastics with paper substrates is a greener approach due to the biodegradability, recyclability, low cost, and compatibility with roll-to-roll printing. However, the porous microstructure of paper promotes the wicking of functional inks, which adversely affects printability and electrical performance. Furthermore, truly sustainable printed electronics must support the separation of electronic materials, particularly metallic inks, from the paper substrate at the end of life. This important step is necessary to avoid contamination of recycled paper and/or waste streams and enable the recovery of electronic materials. Here, we describe the use of shellac – a green and sustainable material – as a multifunctional component of green, paper-based printed electronics. Shellac is a cost-effective biopolymer widely used as a protective coating due to its beneficial properties (hardness, UV resistance, and high moisture- and gas-barrier properties); nonetheless, shellac has not been significantly explored in printed electronics. We show that shellac has great potential in green printed electronics by using it to coat paper substrates to create planarized, printable surfaces. At the end of life, shellac acts as a sacrificial layer. Immersing the printed device in methanol dissolves the shellac layer, enabling the separation of printed electronic materials from the paper substrate.

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Section: Introductionmentioning

confidence: 99%

Shellac-paper composite as a green substrate for printed electronics

Hussein

Schlingman

Noade

et al. 2022

Flex. Print. Electron.

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show abstract

“…When ΔE results are checked, it is understood that the film layer formed by the ink depending on the paper surface properties and ink absorption are effective parameters in reflecting CMYK colors. It is also seen in the literature that the depth differences and pore structure on the paper surface are effective on the ink settling on the paper, print density, print gloss, and CIE L*a*b* colors (Aydemir et al, 2021;Mettänen, 2010). This situation confirms that the surface properties of the papers used in the study are effective on L*a*b* and ΔE values.…”

Section: Color Measurementmentioning

confidence: 99%

Kaplanmış ve Kaplanmamış Kağıtların Baskı Kalitesine Etkisini Belirleyen Parametrelerin Analizi

SESLİ,

HAYTA,

AKGÜL

et al. 2023

19 Mayıs Sosyal Bilimler Dergisi

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Both paper and ink are the two main raw materials in the manufacture of printed materials. The visual quality of the printed product is very important. Printing an image on paper with ink in high resolution is dependent on the quality of the interfacial relationship between paper and ink. Newsprint, book paper, and pure cellulose-based high-grade paper pulp where the mechanical wood pulp is intensively utilized have porous structures. Coldset offset printing is used for printing on these papers. The coldset offset printing is a printing process where drying occurs late by evaporation of the liquid portion of the ink and absorption into the paper. The ink can sometimes take several days to dry completely (solidify). During this drying process, the ink penetrates the cellulose capillaries in the paper in the vertical direction and behaves the same in the horizontal direction. The dot diameter, which mechanically grows due to the printing pressure (dot gain), grows even larger by spontaneous micro-steps during the drying process. It tends to cross to the back surface of the paper in a vertical direction. For this reason, the paper-ink interfacial behavior is a critical parameter that should be maintained under control as much as possible. The rough surface, porous structure and humidity of the paper, the viscosity and amount of ink printed on the paper surface, the printing pressure at the NIP point, and the physical conditions of the printing room are influential in this interfacial relationship. In this study, the factors that affect the image quality in printing on uncoated and coated papers were investigated by test printing. The CMYK test scale, which was specially prepared for the examination of print quality, was printed with Coldset Offset Printing on smooth papers coated with woodfree coated paper and woodfree uncoated paper, which are the best examples of uncoated papers and are widely used especially in book production. After printing, the surface of the papers was measured with a spectrophotometer and the dot growth and trapping values were determined. Surface and interfacial images of the prints were taken with a stereoscopic microscope and visual examinations were undertaken.

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“…Also, the roughness Bendtsen [3] of the paper is primordial for the absorption and the spreading of inks, and also for determining the amount of coating. Relation could be considered as to the scale of roughness to properties of paper such as gloss and pick resistance [4,5]. The effect of the pH value could be examined as to its influence on the optical and morphological properties of a copy paper sample.…”

Section: Introductionmentioning

confidence: 99%

Untitled

2023

ACSR

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The ash on ignition at 900 ˚C of a A4 copy paper sample UPM New Future Multi was determined to be 15.4%w/w and its X-ray diffraction pattern showed the presence of only portlandite syn Ca(OH) 2 peaks placed at 2θ values of 18 o , 29 o , 34 o , 46 o , 47 o , 51 o , 54 o , 63 o , 72 o which corresponded to crystal planes of 111, 110, 112. The high tensile force value of 4.5KN/m of the dry A4 copy paper sample correlated well with its high pH value of 9.6 and high ash on ignition content of 15.4%w/w. Along with them the roughness Bendtsen of the paper was found in a scale which related well with its pick resistance measured to be 1.96m/s in the machine direction and 0.39m/s in the counter direction. The band gap energy E g from the Diffuse Reflection Spectroscopy (DRS) study of the A4 copy paper sample was calculated to be 1.169715722005400000000000eV. The absorption coefficient α(ν) near the edges was calculated to be 4.27185997cm -1 and the band gap was obtained by intercepting the linear fitted line in the plot of (αhv)^2 versus hv. The X-Ray powder diffraction pattern of portlandite was indexed by trial and error, and some peaks were assigned their hkl values. Finally, the Miller indices of the reflections were determined as well as the separation of planes. The separation of the 111 plane in the rhombohedral lattice was calculated to be 0.2984038nm. The separation of the 110 plane in the rhombohedral lattice was calculated to be 0.423379nm and of the 112 plane was 0.2205806429nm.

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Effect of Paper Surface Properties on Ink Color Change, Print Gloss and Light Fastness Resistance

Cited by 11 publications

References 0 publications

Shellac-paper composite as a green substrate for printed electronics

Shellac-paper composite as a green substrate for printed electronics

Kaplanmış ve Kaplanmamış Kağıtların Baskı Kalitesine Etkisini Belirleyen Parametrelerin Analizi

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