Bio-based and self-catalyzed waterborne polyurethanes as efficient corrosion inhibitors for sour oilfield environment

Environmentally Friendly Antiagglomerants: A Promising Solution for Gas Hydrate Plugging and Corrosion Risk Management in Oil and Gas Pipelines

“…Table presents the fitted EIS parameters for the corrosion of CS in the blank and solution with different concentrations of OADs. As seen in Table , the solution resistance values were negligible, confirming that the IR drop might be small . In the solutions containing OADs, with the adsorption of inhibitor’ molecules over the CS surface and formation of a protective film, the R ct significantly increased, and the values of C dl decreased.…”

“…Consequently, the protection of transportation facilities against corrosion has received wide global attention . Corrosion inhibitors serve as an economically favorable technique to suppress the steel corrosion by forming a compact barrier between the corrosive solution and the steel surface. − The heteroatoms (oxygen, nitrogen, sulfur, and phosphorus), aromatic rings, and unsaturated bonds in the structure of organic corrosion inhibitors are regarded as the adsorption centers to donate their lone pair electrons to Fe atoms and form the coordinate covalent bonds with the steel surface. ,− Gemini, imidazoline derivatives, fatty amine, and quinoline compounds have been studied as effective corrosion inhibitors in a CO 2 –H 2 S medium …”

“…27,34 Carbon steel CO 2 corrosion, in the presence of hydrogen sulfide (H 2 S), is a significant challenge in downstream and upstream gas and oil facilities. 35,36 The failures by corrosion can result in plant shutdowns, higher costs of maintenance and repairs, and environmental and health hazards. As the energy demand grows exponentially, natural gas and oil are produced at a faster pace on a yearly basis.…”

Synthesis of a fully bio-based self-catalyzed hyperbranched waterborne polyurethane as a sizing agent for enhancing the interfacial properties of CF/PA6 composites

“…33 Moreover, considering the toxicity of dibutyltin dilaurate (DBTDL), a commonly used catalyst to accelerate polyurethane synthesis, and the associated challenges in separating it from reaction mixtures, researchers have shifted their focus towards alternative strategies. 34,35 In essence, the imperative lies in the exploration of bio-derived WPUs derived from a self-catalytic process to effectively eliminate the aforementioned limitations.…”

“…In addition to the DBTDL catalyst, tertiary amines such as dimethylethanolamine, 1,4-diazabicyclo[2.2.2]octane, and dimethylcyclohexylamine can also be used as catalysts in polyurethane synthesis and can significantly expedite the production process. 34 Besides, both academic and industrial research have made substantial efforts to enhance the sustainability of polyurethanes through the creation of various innovative bio-based polyols. 36,37 Notably, polyurethanes can be easily derived from renewable sources such as plant oils where unsaturated fatty acids have proven to be efficient precursors for both polyols and isocyanate monomers.…”