DOGAN TUTAK

Dr. DOGAN TUTAK


Research Focus & Metrics

Academic Career Length

12Years (2015-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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20 July 2023 in Cellulose Chemistry and Technology
Verified
Journal Article
Closed access
CACem Aydemir
Cem Aydemir
SYSemiha Yenidoğan
Semiha Yenidoğan
DTDOGAN TUTAK
DOGAN TUTAK
In the printing and packaging industry, sustainability is defined as manufacture and practices that reflect responsibility for the environment and resources to meet the needs and expectations of future generations. In this article, raw material management, cellulose resources, industrial forests, ecological and renewable alternative fiber resources were examined in the framework of the sustainability of the printing and packaging industry. The recycling of printed materials and packaging and the effects of paper-ink types and product design in this recycling have been discussed. The effect of separation and processing at the source on the efficiency of paper recycling, economy and ecology was emphasized. The greenhouse gas emissions of solvents used in inks and cleaners, the impact on climate change, water footprint and carbon footprint issues were examined. Suggestions have been made on environmental sustainability in the printing industry, what needs to be done for a competitive production, successful optimization, minimization of waste, use of existing possibilities, recycling and evaluation of alternatives and use of clean energy.

14 July 2020 in Nordic Pulp & Paper Research Journal
Verified
Journal Article
Closed access
PDF file
Arif OzcanArif Ozcan
Arif Ozcan
DTDOGAN TUTAK
DOGAN TUTAK
Coatings are generally applied for opacity, smoothness and gloss on the paper surface. Pigments such as CaCO3, Kaolin-Clay and Zeolite are used, and natural or synthetic binders are used. In this study, coatings using the CaCO3, Kaolin-Clay and Zeolite pigments on 80 gr/m2 high grade papers were made. PVOH was used as binder. Following coating, papers were processed through supercalendering and printed with inkjet printer. Using INGEDE method 11p. recycling process printed papers were deinked. The optical properties of the recycled papers obtained after the deinking treatment, were compared with the unprinted papers. At the end of the study, the effect of coating on paper surface and the recycling performances of the inkjet printed papers were revealed. It was determined that the papers in which zeolite was used as a pigment were better, in terms of both surface properties and recycling performance when surface properties and recycling performance of coated papers were examined. When all the results were compared, it was found that the performances of coatings for which zeolite was used were much better than coatings such as CaCO3 and Kaolin-Clay, both in terms of surface coating properties such as opacity, roughness and gloss and recycling results such as brightness.

28 August 2019 in Cellulose Chemistry and Technology
Verified
Journal Article
Closed access
CACem Aydemir
Cem Aydemir
AKArif Karademir
Arif Karademir
SISami Imamoğlu
Sami Imamoğlu
BABilge Altay
Bilge Altay
PFPaul D. Fleming
Paul D. Fleming
DTDOGAN TUTAK
DOGAN TUTAK

15 April 2025 in Journal of Applied Polymer Science
Verified
Journal Article
Open access
SKSerat Kotan
Serat Kotan
DTDOGAN TUTAK
DOGAN TUTAK
Polymer wastes are increasingly threatening the environment. The industry is interested in the use of biodegradable coatings for sustainability and the environment. The aim of this study is to produce an antibacterial coating material based on polylactic acid (PLA) synthesized with chitosan (CS), and titanium dioxide (TiO2). PLA and CS are biodegradable biopolymers. This study tests the surface properties of the coating using scanning electron microscopy, chemical reactions using ATR‐FTIR, surface roughness, antimicrobial activity, air permeability, contact angle, and printing suitability of the coated paper in accordance with the standards. It has been shown that the coatings have antimicrobial activity against Y. enterocolitica , S. aureus , and C. albicans bacteria and reduce bacterial growth. SEM images show the dissolution of TiO2 nanoparticles in the coatings and pilling in the mixtures with CS. Data obtained with ATR‐FTIR confirm the chemical effects of PLA, TiO2, and CS. PLA, and TiO2 reduced the porosity on the paper surface. It was concluded that the mixtures formed with CS increased the wettability in contact with liquid and that PLA formed a good barrier property with TiO2. The coating proved to be an environmentally friendly study with its printability properties on disposable food contact materials.

11 November 2017 in Journal of Applied Biomaterials & Functional Materials
Verified
Journal Article
Open access
AKArif Karademir
Arif Karademir
CACem Aydemir
Cem Aydemir
DTDOGAN TUTAK
DOGAN TUTAK
RARaja Aravamuthan
Raja Aravamuthan
Background: In our contemporary world, while part of the fibers used in the paper industry is obtained from primary fibers such as wood and agricultural plants, the rest is obtained from secondary fibers from waste papers. To manufacture paper with high optical quality from fibers of recycled waste papers, these papers require deinking and bleaching of fibers at desired levels. High efficiency in removal of ink from paper mass during recycling, and hence deinkability, are especially crucial for the optical and printability quality of the ultimate manufactured paper. Methods: In the present study, deinkability and printability performance of digitally printed paper with toner or inkjet ink were compared for the postrecycling product. To that end, opaque 80 g/m2 office paper was digitally printed under standard printing conditions with laser toner or inkjet ink; then these sheets of paper were deinked by a deinking process based on the INGEDE method 11 p. After the deinking operation, the optical properties of the obtained recycled handsheets were compared with unprinted (reference) paper. Then the recycled paper was printed on once again under the same conditions as before with inkjet and laser printers, to monitor and measure printing color change before and after recycling, and differences in color universe. Results: Recycling and printing performances of water-based inkjet and toner-based laser printed paper were obtained. The outcomes for laser-printed recycled paper were better than those for inkjet-printed recycled paper. Conclusions: Compared for luminosity Y, brightness, CIE a* and CIE b* values, paper recycled from laser-printed paper exhibited higher value than paper recycled from inkjet-printed paper.

1 June 2018 in Journal of Graphic Engineering and Design
Verified
Journal Article
Open access
DTDOGAN TUTAK
DOGAN TUTAK
HBHuseyin N. Beytut
Huseyin N. Beytut
Arif OzcanArif Ozcan
Arif Ozcan
A standard color gamut can be obtained with CMYK samples that are printed with an offset printing system according to the ISO 12647-2:2013. It is possible to enhance or widen the color gamut during the printing process by interfering with the density and dot gain characteristics. Printing with a wider color gamut provides a more vivid area and more depth in color. In this study, print trials were conducted at first with standard values (density, dot gain and such). Then another trial was conducted by changing the density values respectively during the trial. Ink density values for all colors were decreased from the standard value as -0.15D, -0.30D and then increased as +0.15D, +0.30D. Color gamuts of the trials were calculated and compared at the end. It is found that ink density values directly affect color gamut in offset printing. It is also found that the color gamut decreases equally when ink density values decrease and vice versa. However, some printing problems occurred with high density values even though it gave an expanded color.