Person: URAL, ELİF
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URAL
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ELİF
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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 Open Access Tin oxide dopped caco3 coating on paper for flame retardancy and printability properties(2022-01-01) URAL, ELİF; URAL E.Valuable papers, such as checks, promissory notes, money or printing papers used in wallpaper laminates, must be resistant to burning. For this reason, different flame retardants are used in papers. However, generally, the flame retardants used negatively affect printability by creating a hydrophobic surface. For this reason, it is thought that the combination of flame retardants with a filler that will positively affect the printability of paper will be more suitable for such printable papers. For this purpose, this work aimed to obtain paper with good printability and delayed ignition properties by using calcium carbonate, which is a good paper filler, and tin oxide, which is a flame retardant.Publication Metadata only Production of antimicrobial paper with natamycin and methylcellulose and evaluation of its printability(2021-11-28) URAL, ELİF; URAL E.Food preservation has become one of the important research topics due to developing technology and decreasing resources. One of the methods used to increase the shelf life of food is to make antimicrobial packaging. A package should both promote the product well and protect it. For this reason, the production of printable and antimicrobial packaging paper was investigated within the scope of this study. In this study, methyl cellulose biopolymer containing natamycin in different amounts (0;2,5;5;7.5;10) to produce antimicrobial paper was successfully coated on office paper in a laboratory paper coating device and its antimicrobial properties were measured by disc diffusion method. The gloss and color values of the obtained papers were determined and offset test prints were made with IGT C1. Color and gloss properties of printed papers were measured. As a result, an effective antimicrobial paper was produced with natamycin. The antimicrobial properties of the produced papers increased due to the increased amount of natamycin. In addition, it has been found that the produced papers are suitable for offset printing.