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Conferencia de Victoria J. Gelling, Department of Coatings and Polymeric Materials, North Dakota State University (USA)

Alternative Methods for Corrosion Inhibition

 In our research, a variety of methods utilizing responsive properties are being investigated for corrosion inhibition, focusing on conducing polymers (CPs) as well as other techniques such as sol-gel coatings and microencapsulated soluble corrosion inhibitors. CPs are often explored as potential corrosion inhibitors, due to their inherent redox-active nature with resulting passivation of active metals. The microencapsulation of corrosion inhibitors is suggested as a technique to overcome inherent solubility issues that can result in poor coating performance, with the synthesized microcapsules sensitive to the pH changes that occur during corrosion processes. Finally, the sol-gel coatings studied are cross-linkable systems whereby active corrosion inhibition is introduced via the crosslinking portion of the coating system. During this presentation, the aforementioned corrosion inhibiting techniques will be discussed, focusing on the electrochemical measurement of the degradation and resulting corrosion processes. Additionally, an innovative one-step process for synthesizing polypyrrole and polyaniline nanospheres will be presented. In this technique, ozone is used as an oxidant to form uniform nanospheres with a natural resistance to agglomeration. Interestingly, composite structures with core/shell morphology have also been synthesized utilizing this relatively simple technique. It should be noted that this technique is an environmentally friendly process, with no waste stream generation.

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