Abstract
High molecular-weight organic corrosion inhibitors are consisting of two functional atomic groups. The one functionates as adsorbent, another is hydrocarbon radicals which resist the corrosive matters. Metals are protected from the penetration of corrosive materials by these barriers which are built up with the hydrocarbon radicals.
With inhibitors of high molecular-weight, a densely packed film, with the hydrocarbon chains oriented outward, is formed on the metal surface.
But with those inhibitors whose hydrocarbon chains are branched at nearer position to adsorbent, worse corrosion inhibition is gained than with not branched ones.
For the reasons, we concluded that decreasing inhibition were indebted (1) to inter-molecular interference with regular orientation of inhibitor molecules on the metal surface and (2) to inner-molecular interference with adsorbent to adsorb onto the metal surface.
