SYNTHESIS OF A DI-CATIONIC SURFACTANT CONTAINING TWO LONG CARBON CHAINS AND PYRIDIUM CATION, AND ITS EFFECTIVENESS AGAINST METAL CORROSION

Creative Commons License

Onsekiz Z. N., Durmaz B., Çetin C., Öztürk S.

12th INTERNATIONAL NEW YORK CONFERENCE ON EVOLVING TRENDS IN INTERDISCIPLINARY RESEARCH & PRACTICES, New York, Amerika Birleşik Devletleri, 21 - 24 Ağustos 2025, ss.179, (Özet Bildiri)

  • Yayın Türü: Bildiri / Özet Bildiri
  • Basıldığı Şehir: New York
  • Basıldığı Ülke: Amerika Birleşik Devletleri
  • Sayfa Sayıları: ss.179
  • Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
  • Bursa Uludağ Üniversitesi Adresli: Evet

Özet

In this study, a di-cationic surfactant containing two long carbon chains of 10 and 16 carbons, and pyridinium cation was synthesized. The functional groups in the structure of this compound were confirmed by FT-IR spectroscopy. Corrosion tests were carried out by immersing metal coupons in 1.0 M HCl solution containing different concentrations of this synthesized product (0, 1, 5, 10, 25, 50 and 100 ppm) at 25oC for 24 hours. In these corrosion tests, the inhibition efficiency values against corrosion of mild steel were determined at each inhibitor concentration, taking into account the weight loss in the metal coupons. As a result of the corrosion tests, inhibition efficiency values of 16.22% at 1 ppm, 73.47% at 5 ppm, 86.72% at 10 ppm, 95.58% at 25 ppm, 98.39% at 50 ppm and 98.93% at 100 ppm were obtained. As can be seen from the results, the inhibition efficiency increased as the concentration increased, and the highest inhibition efficiency was observed at an inhibitor concentration of 100 ppm. The adsorption of the surfactant on the metal surface plays an active role in the anti-corrosion effect of the surfactant. To prove this adsorption phenomenon, pure water was dripped onto the metal surface removed from the acidic medium containing 0, 5 and 100 ppm inhibitor, and the contact angles of this water with the surface were measured. After proving that the compound adsorbed on the metal surface by contact angle, Langmuir adsorption isotherm study was performed to determine whether this adsorption was predominantly physical or chemical adsorption. In order to visually demonstrate the resistance of the synthesized di-cationic surfactant against metal corrosion, after the corrosion test, images of the metal surface removed from the acidic medium containing 0, 5 and 100 ppm inhibitor were taken with an optical microscope camera.