Synergistic Effects of Linseed Oil Based Waterborne Alkyd and 3-Isocynatopropyl Triethoxysilane: Highly Transparent, Mechanically Robust, Thermally Stable, Hydrophobic, Anticorrosive Coatings

Abstract

High-performance vegetable oil based organic–inorganic bio hybrid materials are of great interest in the current scenario, as the utilization of vegetable oil meets the seventh principle out of the 12 Principles of Green Chemistry that contributes to sustainability in chemistry due to their universal availability, inherent biodegradability, low price, and superb environmental credentials. Here, we report the synthesis of transparent organic–inorganic bio hybrid coatings by tailoring the properties of both linseed oil and 3 isocynatopropyl triethoxysilane (IPTES) using the sol–gel technique. Such materials combine the advantages of both the phases that are usually not compatible within the same material (robustness and homogeneity, mechanical strength, flexibility, optical transparency, hydrophobicity, and anticorrosive properties). The structure elucidation, particle size, and morphology of the synthesized OIH polymers were done by FT-IR, 1H NMR, 13C NMR, 29Si NMR, and electron microscopy techniques (TEM and SEM with EDAX). Thermal properties were characterized by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) techniques. The corrosion resistance behavior of hybrid coatings applied on carbon steel (CS) was evaluated using different electrochemical techniques in 3.5 wt % HCl and NaOH medium. The synthesized hybrid sol–gel material exhibited high transparency in the visible range along with good mechanical, thermal, hydrophobicity, and anticorrosive properties. The results suggest that the biobased hybrid nanocomposite coatings have a great potential to replace the petro-based polymeric coatings for industrial applications.

Vanadium Pentoxide-Enwrapped Polydiphenylamine/Polyurethane Nanocomposite: High-Performance Anticorrosive Coating

“…Furthermore, the second decomposition in the temperature range of 383−537 °C with major loss of 80 wt % was seen due to the breakdown of long fatty acid chain present in the SFPU and V 2 O 5 -PDPA/SFPU. 32 After this, a clear difference in the wt loss can be seen (Figure 5, inset), describing the higher thermal stability of nanocomposite than that of plain SFPU and the stability increases with the loading of V 2 O 5 -PDPA nanoparticle into the SFPU matrix. The char residues at 800 °C are clearly depicted and found to be highest (∼10%) for 2V 2 O 5 -PDPA/SFPU nanocomposite.…”

Formulation of silica‐based corn oil transformed polyester acryl amide‐phenol formaldehyde corrosion resistant coating material

“…This can be related with the hydrolytic stability of ester bond in NaCl medium. The silica and introduction of other polymeric components does reduce the exposure of ester but the system with such linkages are mostly prone to early breakdown 32 . Comparatively, the silica hybrid showed lower corrosion rate and I corr value (Table 3).…”

Effect of Silane on the Active Aging Resistance and Anticorrosive Behaviors of Natural Lacquer

“…35 where M is the molecular weight, V is the valence, and D is the density. 36 where I corr,bare and I corr,coated stand for the corrosion current density for bare steel and coating, respectively.…”