Fabrication of Eco-friendly Sustainable Superhydrophobic and Anticorrosive Coatings from Acrylated Soybean Oil and Biobased Amine by the Aza-Michael Reaction

Eco-friendly, renewable, and green polymers are getting a solution to challenge a major crisis occurring due to the limitation of fossil-based sources in the world. This work focuses on the development of alternative biobased and sustainable materials that are brought about by bifunctional and environmentally friendly biobased coatings. We reported that they are obtained by aza-Michael reactions that are established between acrylated soybean oils and biobased amines in the scope of click chemistry without the use of any catalyst, solvent, or required high-temperature conditions. The performance of the obtained coatings was investigated for comparison with reacted bifunctional amine-modified siloxane agents (NAPTMS, APTES, and NH2-CO). Coatings are obtained by curing acrylated epoxide soybean oil with various amine functional groups via an aza-Michael reaction by filming and spraying methods with one- and two-step approaches. NAPTMS, APTES, and NH2-CO demonstrate some kinds of effects in comparison to the base coating. To develop a water repellent, nanosilica particles (NSPs) are sprayed on the top coating, providing surface modification. Surface wettability showed that the water contact angle reached up to about 167 °C. It is also essential to consider that the superhydrophobic biobased systems have potential for repellency against different types of liquids such as water-based paint, coffee, tea, and methylene blue. The adhesion properties of the coatings improved from 1B to 5B. The prepared film layer is also provided to progress the rust along the scratched line and not be seen on the coated side, which shows a corrosive resistance impact. The resulting coating possessed an improved biocontent and a high elasticity level. Maximum elasticity was achieved in 12 s. It is expressed that the authors believe that this approach has potential as an economical way in textiles and other industrial applications.