Banca de DEFESA: MARIANA FALCÃO LOPES PRINCISVAL CARLOS

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : MARIANA FALCÃO LOPES PRINCISVAL CARLOS
DATE: 23/08/2022
TIME: 09:00
LOCAL: Defesa em condição Remota
TITLE:

SINTHESIS AND EVALUATION OF
ANTICORROSIVE ACTIVITY OF -ENAMINOESTERS AND
IMINOCHALCONES AGAINST CARBON STEEL AISI 1020 IN ACID MEDIUM

KEY WORDS:

corrosion

anticorrosion agents

electrochemistry

PAGES: 162
BIG AREA: Ciências Exatas e da Terra
AREA: Química
SUBÁREA: Química Orgânica
SPECIALTY: Síntese Orgânica
SUMMARY:

This thesis work presented the synthesis and evaluation of the anticorrosive activity of b-enaminoesters: unsubstituted and halogenated (Cl, F and Br), characterized by hydrogen and carbon NMR and their infrared organic functions. The evaluation of the anticorrosive activity was through electrochemical techniques of EIE, RPL and PP, being the most efficient the F-EN, presenting 85% of efficiency by EIE. Another technique used was mass loss, where the F-EN also showed greater efficiency with 86% efficiency. The analysis of the metallic surface was also carried out through SEM, which showed that the surface remained more preserved with the presence of the inhibitor. Theoretical calculations corroborated the results found by the experimental techniques. The second group of molecules were the iminochalcones that were synthesized and characterized spectroscopically. The evaluation of the anticorrosive activity of the iminochalcones resulted in 99% in the mass loss technique for the most efficient compound Cl-IM and 97% in the electrochemical EIE technique and, once again, the SEM showed that the metallic surface was better preserved in the presence of of the inhibitor, and the theoretical calculations showed to be correlated with the experimental ones.

BANKING MEMBERS:
Presidente - 387189 - AUREA ECHEVARRIA AZNAR NEVES LIMA
Interno - 2624418 - CLAUDIO EDUARDO RODRIGUES DOS SANTOS
Interno - 1716351 - GLAUCO FAVILLA BAUERFELDT
Externa à Instituição - MICHELLE JAKELINE CUNHA REZENDE - UFRJ
Externa à Instituição - ADRIANA BARBOSA DA SILVA - UFRJ