Obtaining nanoautoemulsificantes systems using oil of seed of Azadirachta indica A. juss for application as corrosion inhibitor

摘要

Obtaining nanoautoemulsificantes systems using oil of seed of Azadirachta indica A. juss for application as corrosion inhibitor. The patent refers to the process of the preparation and implementation of a system nanoautoemulsificante.The oil of Azadirachta indica aired in nanoemulsu00e3o type O / A has been evaluated in carbon steel AISI 1018, in the midst of corrosive saline (1% to 35%), through the techniques of linear polarization resistance (LPR) and loss of mass (CPM), in a cell instrumented. For both, the hydroalcoholic extract of leaves of A. indica (EAI) was solubilized in a system nanoemulsionado (sneoai) of the type / A.This system was obtained from the oil of the seeds of A. indica (oal) / Dodecylammonium chloride ddac), butanol and water: 20% and 40% of ddac / butanol, 0.1% to 10% of oal and 50% to 89% of water.The systems sneoai and sneoal - IAC had efficiencies of inhibitions for the LPR method with maximum of 65% to 75% (300 ppm) to sneoai and 65% to 85% (100 ppm) and 60% to 80% (150 ppm) to sneoal - EAI. The best efficiencies of inhibitions were observed by the method of CPM with 75% to 95% for sneoai (300 ppm) and 70% to 90% for sneoal - EAI (soo ppm).The product nanotecnolu00f3gico obtained in this invention is biodegradable, easy to handle and can thus be used commercially as a green corrosion inhibitor.