The Alkaline Resistance of Waterborne Acrylic Polymer/SiO2 Nanocomposite Coatings

Hoang Thi Huong Thuy; Hoang Thu Ha; Nguyen Thien Vuong; Tuan Anh Nguyen

doi:10.1155/2022/8266576

The Alkaline Resistance of Waterborne Acrylic Polymer/SiO₂ Nanocomposite Coatings

J Anal Methods Chem. 2022 Apr 22:2022:8266576. doi: 10.1155/2022/8266576. eCollection 2022.

Authors

Hoang Thi Huong Thuy¹, Hoang Thu Ha², Nguyen Thien Vuong^{3

4}, Tuan Anh Nguyen³

Affiliations

¹ Hong Duc University, 565 Quang Trung, Dong Ve, Thanh Hoa, Thanh Hoa, Vietnam.
² VNU-University of Education, Vietnam National University, Hanoi, Vietnam.
³ Institute for Tropical Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam.
⁴ Graduate University of Science and Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam.

Abstract

This study presents a study on the influence of nano-SiO₂ on the alkaline resistance of waterborne acrylic coating using some analysis methods such as FT-IR and UV-Vis spectroscopy, combined with FE-SEM analysis and monitoring weight and adhesion changes during exposure to the saturated Ca(OH)₂ alkaline environment. The obtained results indicated that the alkaline resistance of acrylic coating enhanced appreciably when adding 2.5 wt% of nano-SiO₂. Under the impact of the saturated Ca(OH)₂ solution for 20 days of immersion, nanocomposite coating containing 2.5 wt.% of nano-SiO₂ was only decreased by 3.6% of the weight and 15.4% of the adhesion, while the neat acrylic coating (without nano-SiO₂) seriously reduced 25.4% of the weight and 39.1% of the adhesion.