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http://dx.doi.org/10.14773/cst.2020.19.1.16

The Influence of Hydrotalcite Intercalated with Benzoate on UV Stability of Acrylic Coating  

Nguyen, Thuy Duong (Institute for Tropical Technology, Vietnam Academy of Science and Technology)
Nguyen, Anh Son (Institute for Tropical Technology, Vietnam Academy of Science and Technology)
Thai, Thu Thuy (Institute for Tropical Technology, Vietnam Academy of Science and Technology)
Pham, Gia Vu (Institute for Tropical Technology, Vietnam Academy of Science and Technology)
To, Thi Xuan Hang (Institute for Tropical Technology, Vietnam Academy of Science and Technology)
Olivier, Marie-Georges (Universite de Mons (UMONS), Faculty of Engineering, Materials Science Department)
Publication Information
Corrosion Science and Technology / v.19, no.1, 2020 , pp. 16-22 More about this Journal
Abstract
It is important to realize that benzoate was intercalated into hydrotalcite (HTC-Bz) by the co-precipitation method. In this case, acrylic coating with 0.5 wt% HTC-Bz was deposited on carbon steel using the spin coating method. Next, the HTC-Bz structure was characterized by Field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FT-IR). In fact, an ultraviolet vision spectroscopy (UV-Vis) was used to determine the benzoate content in HTC-Bz, and the UV absorption ability of HTC-Bz. Using electrochemical techniques, water contact angle measurement, and thermal-gravimetric analysis, we compared the protective properties before and after QUV test, hydrophobicity and the thermal stability of acrylic coating containing HTC-Bz. The obtained results showed that HTC-Bz with a plate-like structure was successfully synthesized; benzoate was intercalated into the interlayer of hydrotalcite with a concentration of 28 wt%. Additionally, it was noted that HTC-Bz has an UV absorption peak at 225 nm. In conclusion, the addition of HTC-Bz enhanced the UV stability, hydrophobicity and the thermal stability of acrylic coating.
Keywords
Benzoate; Hydrotalcite; Acrylic coatings; UV stability;
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