Person: ÖZOMAY, MERAL
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ÖZOMAY
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MERAL
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Publication Open Access Environmentally friendly dyeing of waste cellulose fiberwith natural dye extract obtained from walnut shell(juglans regia)(2023-05-15) ÖZOMAY, MERAL; ÖZOMAY, ZAFER; Kaya S. S., Doğru D., Adeel S., Özomay M., Özomay Z.Cellulose is an important raw material in the manufacture of paper. Cellulose is formed by thefelting, fringing, swelling by absorbing water of the fibers and the combination of these fibersas a result of certain processes. Paper is also obtained by processing plant fibers. It is alsopossible to reuse the waste paper, which are completed in utilization, in paper production byrecovering the cellulose in its structure. Recycling is the process of transforming these wastepapers, which can be reused, into a second raw material by subjecting them to physical orchemical processes. In addition to being sustainable, significant savings are achieved in theamount of raw materials used in paper recycling. In addition, this saving is economicallybeneficial to production due to the high cost of raw materials.In this study, natural dye plants and natural dyeing methods were used to produce paper fromrecycled cellulose with the aim of increasing sustainability. In order to prevent the negativitiesoriginating from the increase in carbon emissions that synthetic dyes cause, it is aimed toincrease the use of natural dyeing methods in paper production. Since natural dye plants areproduced from plant itself or its waste, they do not cause environmental pollution and provideadvantages for recycling.In this study, cellulose fibers were colored with natural dyeing method using walnut shell.Thus, between the fibers, samples colored with walnut shells and samples that were notcolored were examined under two different conditions. Samples were prepared in twodifferent ponds, 5 L and 8 L, with a fixed ratio of solids. Paper sheets were formed with thesieve using the dipping method in the prepared concentration and at the same time, thetechnical properties of the samples were examined by reducing the fibers at a certain rate.Samples were measured in terms of weight, color measurement, light fastness, contact angle,surface smoothness, air permeability and compared with the data obtained.Keywords: Waste paper, Recycling, Natural dyeing, SustainabilityPublication Open Access Analytical characterization of bible and textiles artifacts from sinope balatlar church excavations for conservation purposes(2022-01-01) ÖZOMAY, MERAL; ÖZOMAY, ZAFER; Massadikova G., ÖZOMAY M., ÖZOMAY Z., Hasanova R.© 2022. This is an open-access article distributed under the terms of the Creative Commons Attribution License. Archaeological textile and paper materials shed light on cultural studies in different fields. In this study, a composite textile material and 2 printed Biblical artifacts of the 19th c., found during the excavation of the Balatlar Building Complex were investigated. The building complex, also known as the Balatlar Church or Mithridates Palace, is an imperial hamam complex belonging to the Roman Period, located in the Ada Street of Sinope province in the north of Turkey. It was found that different materials such as metal yarn, paper used under embroidery, and decorative beads used on textile material were used in the textile fragment recovered from tomb VIII of the Balatlar Building Complex. The investigation concerned the fiber types and dyestuffs for textile material, paper types and dyestuffs used for biblical artifacts by using non-destructive and microa-nalysis methods for these unique heritage objects. Attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR), Optical microscope (OM), Digital Microscope (DM), Scanning Electron Microscopy with Energy Dispersive X-Ray Analysis (SEM-EDX) and High-Performance Liquid Chromatography-Diode Array Detector (HPLC-DAD) was used. It was determined that the textile find consists of two different fabrics, the main fabric, and the lining, and the dye that gives the main fabric its red color is the root dye (Rubia tinc-torum L.). Also, Alizarin and madder (Rubia tinctorum L.) was determined as a plant source. It has been estab-lished that only the pattern threads are silk threads. HPLC-DAD chromatograms has been analyzed of paper pieces of the, written and unwritten sides, paper-board and leather sides archaeological L.(Large) Bible and S. (Small) Bible books. It was concluded that natural dyestuffs were not used in the production of the paper and leather parts of the L.Bible and S.Bible books. For the written text Iron (III)-gallic acid binary complex vibration bands were detected. Documentation and research studies conducted on 2 discovered Biblical artifacts have shown that biological degradation has oc-curred on the surface of the artifact. As a result of microscopic examination, it was found that the cover part of the L.Bible was made of cardboard and there were remnants of gray side paper. Remnants of leather-pre-pared binding were found on the surface of S.Biblical artifact.Publication Metadata only Boraks ile Mordanlanmış İpekli Kumaşların Renk ve Haslık Özelliklerinin Araştırılması(2019-07-22) ÖZOMAY, MERAL; ÖZOMAY, ZAFER; ÖZOMAY M., ÖZOMAY Z., GÜNEY H.Bu araştırmada dünyadaki rezervlerin yaklaşık %63’ünün Türkiye’de bulunduğu tespit edilen bor madeni ile yapılan doğal boyamanın, ipek liflerinin boyanmasında kullanılabilirliği ve elde edilen haslıklar araştırılmıştır. %100 ipekli malzeme farklı oranlarda boraks ile mordanlandıktan sonra bitkiden ekstrakte edilmiş boya ile klasik yönteme göre boyanmıştır. Boyamaya olan etkisini görebilmek için materyal ağırlığına göre 7 farklı oranda boraks kullanılmış, bitki, ekstrakt miktarı, banyo oranı, süre ve sıcaklık sabit tutulmuştur. Elde edilen boyamaların yıkama ile yaş ve kuru sürtme haslık özellikleri incelenmiştir. Karşılaştırmalar mordansız boyamaya göre yapılmıştır. Araştırma sonuçlarına göre; elde edilen yıkama ve sürtme haslık değerlerinin kullanılan mordan miktarına göre farklılıklar gösterdiği, materyal ağırlığına göre %5 boraks kullanımının fazlasının haslık değerlerini değiştirmediği sonucuna ulaşılmıştır. Anahtar sözcükler: boraks, doğal boyama, ipek, kök boya