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ÖZCAN, ARİF

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ÖZCAN

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ARİF

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End date: 2019 × Start date: 2019 ×

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    Antibacterial effect of Ag nanoparticles into the paper coatings
    (WALTER DE GRUYTER GMBH, 2019) ÖZCAN, ARİF; Kandirmaz, Emine Arman; Ozcan, Arif
    Food packaging is the most important output of the printing industry. Giving antibacterial effect to the papers used in food packaging will extend the shelf life of the product and food transfer in healthier conditions. The nanoparticles with known antibacterial activity are nanosilver, nanogold, nanosilica. Binders used in paper coating provide a good nutrient medium for bacteria. In this study, Ag nanoparticles was first synthesized as monodisperse in 10 nm size with polyvinyl pyrrolidone and sodium boron reaction which will give antibacterial properties to paper coatings. The chemical structure of the synthesized Ag nanoparticles is illuminated by fourier transform infrared spectrophotometer (FTIR). Different paper coating formulations containing varying amounts of Ag nanoparticles were prepared with starch binder. Using these mixtures; papers coated with a laboratory-type paper coating machine onto 80 g/m(2) paper. Color, gloss, contact angle, surface energy, antibacterial properties of the paper against the E. coli bacteria and S. aureus bacteria were examined. As a result, Ag nanoparticles has been successfully synthesized and used in paper coating. Antibacterial and printability properties were improved by increasing the amount of Ag nanoparticles.
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    PublicationOpen Access
    Investigation of the effect of para-amino benzoic acid (PABA) added starch-coated chemicals on the printability properties of paper
    (SAGE PUBLICATIONS LTD, 2019-01) ÖZCAN, ARİF; Ozcan, Arif
    Introduction: Paper is the most important material of the printing industry and is being improved due to the increasing needs of industry. The most important process to improve the optical and physical properties of paper is the surface coating. Paper has a smoother and opaquer surface with surface coating. In addition, brightness, whiteness, and yellowness values are improved with surface coating. Ultraviolet (UV) light in sunlight causes changes in the structure of the paper and coating chemicals and accordingly causes yellowing. Para-amino benzoic acid (PABA), due to its chemical structure, is a UV-blocking agent used in sunscreen creams. Methods: The effect of PABA on paper gloss, yellowness, and lightfastness values was investigated by adding it into the surface coating formulation. For this purpose, coating formulations were prepared with cationic starch and 3%, 5%, and 7% PABA; coatings were applied to the paper according to laboratory condition standards. Coated papers were printed with an IGT-C1 lab-type offset printability device with magenta ink. The printed papers were then exposed to a light fastness test with Solarbox. The color, brightness, and yellowness values of all samples before and after lightfastness were measured with an X-Rite spectrophotometer. The gloss of coated and printed paper sample values was measured with a BYK-Gardner glossmeter. Results: The gloss values of paper to which PABA was added, increased; however, it was determined that these gloss values decreased after the lightfastness test. Conclusions: PABA-added cationic starch coatings are more affected by UV light than cationic starch coatings.