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Journals / Politeknik Dergisi / 2026 / 2026 - Cilt 29, Sayı 5

The Printability Properties of a Water-Based Printing Ink with a Semi-Synthetic Azo Dye from Eucalyptus spp. Bark Extract

Okaliptus spp. Kabuğu Ekstresinden Yarı Sentetik Azo Boyar Madde İçeren Su Bazlı Baskı Mürekkebinin Basılabilirlik Özellikleri

Sevim Rollas(MARMARA UNIVERSITY)0000-0002-4144-6952
Pelin Hayta(SİNOP ÜNİVERSİTESİ)0000-0003-1613-0785
Mert Ülgen(ACIBADEM UNIVERSITY)0000-0000-0000-0000
Ş. Güniz Küçükgüzel(FENERBAHCE UNIVERSITY)0000-0001-9405-8905
Tuğçe Çaklılı(ACIBADEM UNIVERSITY)0009-0009-4621-3865
Mehmet Oktav(MARMARA UNIVERSITY)0000-0002-9872-4802
Pages
1–8
Publication Date
2026-09-14
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

It can be concluded that the SAD has high color intensity and can be used as a colorant in water-based printing inks.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:The aim of the study was the preparation of azo group containing dye using a feasible and inexpensive method.
📊
Key Findings & Data:The structure of the SAD was investigated using UV-visible, FT-IR, 1H-NMR, LC-MS spectral data.
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Conclusion & Impact:It can be concluded that the SAD has high color intensity and can be used as a colorant in water-based printing inks.
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:yarı sentetik doğal pigment · azo renklendirici sentezi · Okaliptüs spp. kabuğu özütü

Abstract

The aim of the study was the preparation of azo group containing dye using a feasible and inexpensive method. Azo dyes are one of the most prominent classes of chromophores and widely used as synthetic colorings in food dyes, pharmaceuticals, cosmetics, textile, printing and other industry and as pH indicators. Semi-synthetic natural dyes are regarded as multi-component systems because they are derived from plant-based extracts. The synthesized azo dye (SAD) was obtained as a mixture product from the reaction of Eucalyptus spp. bark ethanol-water extract with the diazonium salt of p-aminobenzoic acid (PABA). The structure of the SAD was investigated using UV-visible, FT-IR, 1H-NMR, LC-MS spectral data. In the LC-MS spectrum of SAD, at m/z 301.2 belong to quercetin ion was detected. The maximum UV-visible absorption of SAD was 431 nm and the extract has no absorption this region. In the FT-IR spectrum, at 1420 cm-1 azo stretching band was observed. In the 1H-NMR spectrum, carboxylic acid proton exhibited at 12.80 ppm. Since SAD was water-soluble, its performance within a water-based flexographic printing system was examined. It can be concluded that the SAD has high color intensity and can be used as a colorant in water-based printing inks.

Özet

Çalışmanın amacı, uygulanabilir ve ucuz bir yöntem kullanarak azo grubu içeren boyar maddenin hazırlanmasıdır. Azo boyar maddeler, en önemli kromofor sınıflarından biridir ve gıda boyaları, ilaçlar, kozmetikler, tekstil, baskı ve diğer endüstrilerde sentetik renklendirici olarak ve pH göstergesi olarak yaygın olarak kullanılmaktadırlar. Yarı sentetik doğal boya maddeler, bitki özlerinden elde edildiği için çok bileşenli sistemler olarak kabul edilir. Sentezlenen azo boyar madde (SAD), Okaliptus spp. kabuğu etanol-su özütü ile p-aminobenzoik asidin (PABA) diazonyum tuzu arasındaki reaksiyonun bir karışım ürünü olarak elde edilmiştir. SAD'nin yapısı, UV-görünür, FT-IR, 1H-NMR, LC-MS spektral verileri kullanılarak incelenmiştir. SAD'nin LC-MS spektrumunda, m/z 301,2'de kuersetin iyonuna ait bir iyon tespit edilmiştir. SAD'nin maksimum UV-görünür absorpsiyonu 431 nm'dir ve ekstrakt bu bölgede absorpsiyona sahip değildir. FT-IR spektrumunda, 1420 cm-1'de azo gerilme bandı gözlemlendi. 1H-NMR spektrumunda, karboksilik asit protonu 12,80 ppm'de görüldü. SAD suda çözünür olduğu için, su bazlı fleksografik baskı sistemindeki performansı incelendi. SAD'nin yüksek renk yoğunluğuna sahip olduğu ve su bazlı baskı mürekkeplerinde renklendirici olarak kullanılabileceği sonucuna varıldı.

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Cite This Article

Rollas, S., Hayta, P., Ülgen, M., Küçükgüzel, Ş. G., Çaklılı, T., Oktav, M., *, P. H. (2026). The Printability Properties of a Water-Based Printing Ink with a Semi-Synthetic Azo Dye from Eucalyptus spp. Bark Extract. Politeknik Dergisi, 2026 - Cilt 29, Sayı 5, 1–8. https://doi.org/10.2339/politeknik.1834998

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