Person: ÖZCAN, ARİF
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ÖZCAN
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ARİF
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Publication Open Access Production and printing of solvent-based fluorescent ink for using in anti-counterfeiting documents(2022-01-01) ÖZCAN, ARİF; Kandirmaz E. A., ÖZCAN A.© 2022 Authors.Security inks are used in areas such as money, expensive products, identity cards, passports. Generally, they are more expensive than conventional inks. A good security ink is expected to be fairly inexpensive and non-replicable. Pigments used in security ink are usually produced from rare earth elements. It is very difficult to produce ink from rare earth elements and high performance ink carrier systems are needed. There is no need for special carrier systems to produce ink from organic fluorescent pigments, and they allow cheaper ink production while reducing reproducibility. In this study, it is aimed to produce ink using organic-based fluorescent pigment. For this purpose, solvent-based ink formulations containing commercial solvent based organic fluorescent blue pigment in different ratios were prepared with polyurethane resin. The prepared inks were printed on the paper surface with the inkjet printing system. The colour properties of the prints obtained were determined under daylight and UV light. In addition, the gloss, adhesion, abrasion resistance, light fastness and drying times of the prints were determined. As a result, it has been determined that the ink produced is transparent in daylight, has a blue glow in UV light and can be used as a security ink in valuable documents.Publication Metadata only The effect of paper coatings containing biopolymer binder and different natural pigments on printability(De Gruyter Open Ltd, 2021) ÖZCAN, ARİF; Arman Kandirmaz E., Ozcan A., Ural E.Paper is an environmentally friendly, recyclable material whose main material is cellulose, which can be obtained from all kinds of trees and plants, used as writing, printing and packaging material. Due to its structural properties, papers are not resistant to temperature and humidity, as well as problems with ink transfer with its porous structure and experienced negative printability properties. In recent years, especially the growth of the packaging industry has increased the demand for papers with improved printability properties. In order to obtain better printability properties from papers, some processes can be performed in paper production, as well as some surface treatments after production. These processes are paper coating, sizing and calendering. Paper coatings are generally water-dispersed coating solutions with one or more pigments, binders and certain additives to improve the desired properties. With these processes, by filling the gaps between the pores of the paper, a shapely and smooth surface is obtained and good printability is obtained together with the optical and physical properties of the papers. In this study, the interactions and printability properties of different types of pigments with xanthan gum binder were investigated by preparing paper coating formulations using calcium carbonate, barite and talc pigments and xanthan gum as binder. As a result, xanthan is a good coating binder and CaCO3 from the compared pigments is the most suitable compared to the other 2 pigments, considering all the studied areas. © 2021 Walter de Gruyter GmbH, Berlin/Boston.Publication Metadata only Natural ink production and printability studies for smart food packaging(WILEY, 2020) ÖZCAN, ARİF; Ozcan, Arif; Arman Kandirmaz, EmineVersatile smart packages provide information on the freshness of the content and help protect the content from microorganisms. In this sense, in this study both natural antimicrobial properties and pH sensitive natural dyes were obtained from red beet. Inks were prepared and printed using this dye and their suitability for smart packaging was investigated. For this purpose, red beet was cut into small sizes and mixed separately in ethanol and water (1:2) at 200 rpm. The betaine dye was taken up in solvent. These solvents were removed with evaporator and precipitated with centrifugation and dried in a vacuum oven. The chemical structure of the obtained dye was illuminated by Attenuated Total Reflection-Fourier Transform Infrared Spectroscopy (ATR-FTIR). The color character was determined by UV spectroscopy. Pink colored natural ink was produced by using ink varnish with carboxymethyl cellulose polymer and solid dye. Screen printing was made with this ink and the color, gloss, and lightfastness characters of prints were examined. Antimicrobial effects of the obtained prints were measured against Staphylococcus aureus and Escherichia coli. Mordanting studies were performed with (KAl[SO4](2).12H(2)O) and change in color character was measured. The prints produced using the red beet extract have a yellow-orange color in the basic state; in acid cases it was determined to have a pink-purple color. In addition, it has been found that the ink prints obtained from red beet have antimicrobial properties against bacteria. Results prove that produced samples have good antimicrobial, pH indicator, and printability properties. This colorant can be used in smart food packaging.Publication Open Access Investigation of the effect of speed and pressure on conductivity in inkjet printed electronic devices(2022-01-01) ÖZCAN, ARİF; ÖZCAN A., Kandirmaz E. A., Coskun S.© 2022 Authors.We can define printed electronics as the application of printing on a material by means of semiconductor, dielectric and electronic components. This process basically takes place by adding materials that will provide conductivity properties into the printing inks. In addition to printing with traditional printing systems, drop-on demand inkjet printing provides an important advantage in this field thanks to its non-contact and digital patterning capabilities. Therefore, the demand for inkjet printing printable inks based on high-performance electronics is also increasing to expand the scope of possible applications for printed electronics. In recent years, inkjet printing technology has become more and more popular due to its use in various applications such as photovoltaic cells, light-emitting diodes (LED), organic thin-thin transistors, displays, radio frequency identification devices (RFID), smart clothing and sensors. For these applications, the unique feature of inkjet printing technology is that it can print on a wide range of materials and is a digital, contactless and plateless system. We can count other advantages of this technology as low cost and savings from waste. These properties make the inkjet printing technique particularly suitable for printing conductive patterns on a variety of flexible substrates in the manufacture of electronic circuits or devices. The electrical conductivity on the printed material may vary depending on the substrate, printing speed and pressure. For this purpose, a specially prepared test scale with lines of different thicknesses was printed on the polyethylene film material with BENTSAI BT-HH6105B1 Portable Handheld Mobile inkjet printing machine. The effect of machine speed and pressure values on conductivity was observed in the prints made with silver-based conductive inks. As a result, it was concluded that the conductivity value increased as the printing pressure increased at constant speed, and on the other hand, the conductivity value increased as the printing speed decreased when the pressure was fixed.Publication Open Access Printability and quality of papers coated with different binders(2022-01-01) ÖZCAN, ARİF; ZELZELE, ÖMER BÜNYAMİN; ÖZCAN A., Kandirmaz E. A., ZELZELE Ö. B.Papers are the most commonly used substrates. A printable paper must have certain properties. These properties include surface smoothness, air permeability, surface energy, colour of the paper, opacity, whiteness, light fastness, gloss, and coefficient of elongation under force. In addition, a good printable paper should not allow ink to pass between its two surfaces. After the papers are produced, they are subjected to surface treatments in order to improve the above-mentioned properties and to provide extra specification. Surface treatments include calendering, surface sizing and coating processes. While filling the recesses and protrusions on the surface with the coating process, the paper's affinity for the ink is increased, and the penetration of the ink to the other surface of the paper is prevented. In the coating process basically, a filler is dispersed in a binder. In this study, it is aimed to obtain the highest quality and most printable paper by changing the type of binder used in the coating. In this study, equal amount (5% w/w) titanium dioxide filler was used in all coating formulations. In coating formulations; cationic starch, hydroxy ethyl cellulose and polyvinyl alcohol polymers were used as binders. Binder amounts are adjusted according to optimum viscosity. The obtained coating formulations were coated on the paper surface with a laboratory type coating device. Colour, gloss, surface smoothness, air permeability, surface energy and surface morphology of the coated papers were determined. It was printed with magenta offset printing ink on three different types of paper coated with different binders, using the IGT C1 offset printability test device, under 400 N/m2 pressure printing conditions. Colour and gloss measurements of the prints were made. As a result; It was determined that three different binders improved the printability parameters.Publication Metadata only Highly flame retardant photocured paper coatings and printability behavior(WILEY, 2020) ÖZCAN, ARİF; Ozcan, Arif; Kasikovic, Nemanja; Arman Kandirmaz, Emine; Durdevic, Stefan; Petrovic, SasaDue to the high flammability of the paper, its use is restricted in advanced applications. In this study, UV-cured paper coating formulations containing silica nanoparticles and phosphinoxide were prepared and coated on paper surface. Flammability, wettability, and printability properties were investigated. For this purpose, the surface of the silica nanoparticles was first functionalized with hydroxyethyl methacrylate (HEMA) -OH. The hydroxylated silica nanoparticles were then modified with isocyanatoethyl methacrylate. Bis fluoro phenylphosphine oxide was synthesized by Grignard reaction elsewhere and OH modified in basic medium. Acrylate groups were added to BHPPO with isocyanatoethyl methacrylate to make it suitable for UV-curing formulation. The chemical structures of the obtained substances were illuminated by ATR-FTIR. UV-cured paper coating formulations containing acrylated silica, acrylated phosphinoxide, and mixtures thereof were prepared and coated on the paper surface. Chemical structure, contact angle, surface energies, surface morphology, thermogravimetric analysis, and limited oxygen index of the coatings were determined. As a result, it has been concluded that coated papers have increased thermal stability in the nitrogen atmosphere. The highest thermal stability was observed in coatings containing nanosilica and it was determined that all of the coatings ignited later. Hybrid coatings made within the scope of this study have improved the printability properties as well as adding flame retardancy properties to the paper.