Jump to main content
Jump to site search

Issue 20, 2017
Previous Article Next Article

Synthesis and characterization of scale and corrosion inhibitors with hyper-branched structure and the mechanism

Author affiliations

Abstract

In this study, a new type of scale and corrosion inhibitors with hyper-branched structure has been developed. They have higher efficiency compared with the existing inhibitors used for industrial water treatment. The terminal amino phosphate group of hyper-branched polymers (HBPs) was synthesized through Michael addition and amidation reactions. The scale inhibition efficiency of the obtained products was determined according to their ability to prevent crystallization of calcium sulfate and calcium carbonate at the optimal application conditions. The experimental result shows that HBPs at 20 mg Lāˆ’1 provides a scale inhibiting efficiency for CaCO3 and CaSO4 up to 96.7% and 93.9%, respectively. In addition, the effect of HBPs inhibition on A3 carbon steel corrosion in 3 wt% NaCl medium was investigated by the weight loss and electrochemical measurements. The polarization measurements indicate that the prepared HBPs act as a cathodic type inhibitor. The weight loss test shows that the corrosion inhibition efficiency depends on the concentration and reaches 91.3% at 100 mg Lāˆ’1. The SEM and XRD analyses show that the good scale inhibition performance of HBPs is attributed to the ability to inhibit the formation of crystals and then destroy them. The study of the adsorption thermodynamics and the reaction kinetics of the corrosion process together with the SEM analysis show that the good corrosion inhibition of HBPs is derived from the carbon steel surface immersed in solution with HBPs which can induce the formation of a dense protective adsorption film layer, preventing the corrosion reaction with the surface of the carbon steel. The achieved results indicate that the prepared HBPs have a great potential for application in industrial water treatment.

Graphical abstract: Synthesis and characterization of scale and corrosion inhibitors with hyper-branched structure and the mechanism

Back to tab navigation

Publication details

The article was received on 29 Jun 2017, accepted on 04 Sep 2017 and first published on 05 Sep 2017


Article type: Paper
DOI: 10.1039/C7NJ02201H
Citation: New J. Chem., 2017,41, 12205-12217
  •   Request permissions

    Synthesis and characterization of scale and corrosion inhibitors with hyper-branched structure and the mechanism

    H. Huang, Q. Yao, B. Liu, N. Shan and H. Chen, New J. Chem., 2017, 41, 12205
    DOI: 10.1039/C7NJ02201H

Search articles by author

Spotlight

Advertisements