(720a) Developing Performance-Advantaged Chemicals Utilizing Bioprivileged Molecules: Organic Corrosion Inhibitors

Huo, J., Iowa State University
Bradley, W., Iowa State University
Podolak, K., Iowa State University
Ryan, B. J., Iowa State University
Roling, L., Iowa State University
Kraus, G., Iowa State University
Shanks, B. H., Iowa State University
Biomass-derived molecules hold the promise to create not only drop-in replacement chemicals but also novel performance-advantaged chemicals. One path for the development of these performance-advantaged chemicals is through utilization of bioprivileged molecules, which are intermediates that can be used to generate a library of compounds for testing. In this work, a bioprivileged molecule, triacetic acid lactone (TAL), was used for the creation of an organic corrosion inhibitor molecular library. A number of compounds generated from the TAL library demonstrated promising inhibition efficiency for mild steel in both sulfuric acid and hydrochloric acid solutions as measured from electrochemical impedance spectroscopy. The interaction of the corrosion inhibitors on the mild steel surface was also examined by SEM, XPS, and adsorption studies. By coupling the library synthesis, corrosion inhibition performance and quantum chemical calculations, the structure/function performance of the molecules was elucidated. The work demonstrates how bioprivileged molecules can be used as the basis for identifying novel molecules that can lead to enhanced performance in end use applications.