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Influence of graphene oxide on the corrosion inhibition effect of hydrotalcite loaded with 2- benzothiazolythio-succinic acid

The release of BTSA from HT-BTSA/GO depended on chloride ion concentrations. After 72 h immersion in 0.1 M and 0.5 M NaCl solutions, the BTSA release were about 19.3 % and 61.0 % respectively. The presence of HT-BTSA/GO improved the corrosion resistance and adhesion of solvent free epoxy coatings. The corrosion protection performance of coatings containing HT-BTSA/GO was higher in comparison to the coating containing HT-BTSA. | Vietnam Journal of Science and Technology 56 (3B) (2018) 19-26 INFLUENCE OF GRAPHENE OXIDE ON THE CORROSION INHIBITION EFFECT OF HYDROTALCITE LOADED WITH 2-BENZOTHIAZOLYTHIO-SUCCINIC ACID Thuy Duong Nguyen1, Boi An Tran2, Thanh Thao Phan2, Anh Son Nguyen1, Ke Oanh Vu1, Anh Truc Trinh1, Thi Xuan Hang To1, 3, *, Marie-Georges Olivier4 1 Institute for Tropical Technology, Vietnam Academy of Science and Technology 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Viet Nam 2 Institute of Chemical Technology, Vietnam Academy of Science and Technology 1 Mac Dinh Chi, District 1, Ho Chi Minh City 3 Graduate University of Science and Technology, Vietnam Academy of Science and Technology 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Viet Nam 4 Université de Mons (UMONS), Faculty of Engineering, Materials Science Department 20 Place du Parc, Mons, Belgium * Email: ttxhang@itt.vast.vn Received: 15 July 2018; Accepted for publication: 9 September 2018 ABSTRACT Hydrotalcite intercalated with 2-benzothiazolylthio-succinic acid and graphene oxide (HTBTSA/GO) was synthesized by co-precipitation method. Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD) were used to characterize obtained HTBTSA/GO. The release of BTSA from HT-BTSA/GO in NaCl solution at different concentrations was investigated by UV-Vis spectroscopy. HT-BTSA/GO was incorporated in solvent free epoxy coatings at concentration of 1 wt% and the corrosion protection of these coatings on carbon steel were examined by salt spray test and adhesion measurement. It was shown that GO and BTSA were intercalated in hydrotalcite structure and BTSA content was about 19.7 wt%. The release of BTSA from HT-BTSA/GO depended on chloride ion concentrations. After 72 h immersion in 0.1 M and 0.5 M NaCl solutions, the BTSA release were about 19.3 % and 61.0 % respectively. The presence of HT-BTSA/GO improved the corrosion resistance and adhesion of solvent free epoxy coatings. The corrosion protection performance of .