Dendrimers as novel class of polymeric corrosion inhibitors: A review

• C. Verma^1,2, E.E. Ebenso^1,2 and M.A. Quraishi^3,4

¹ Department of Chemistry, School of Chemical and Physical Sciences, Faculty of Natural and Agricultural Sciences, North-West University, Private BagX2046, Mmabatho 2735, South Africa
² Material Science Innovation &Modelling (MaSIM) Research Focus Area, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho 2735, South Africa
³ Department of Chemistry, Indian Institute of Technology, Banaras Hindu University, Varanasi 221005, India
⁴ Center of Research Excellence in Corrosion, Research Institute, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia

Abstract: Dendrimers are a new class of highly branched, nano-sized, monodisperse macromolecules that have several fascinating physical and chemical characteristics. They are highly soluble in the polar solvents, contain several surface functionality and high surface area which makes them suitable reagents for industrial and biological applications. Recently, several dendrimers have been investigated as effective corrosion and scale inhibitors for metallic and silica corrosion using experimental and theoretical methods. Generally, dendrimers become effective by forming insoluble metal-dendrimer or silica-dendrimer composite on the surface. Their inhibition performance of dendrimers have been measured using several experimental such as weight loss, electrochemical (EIS and PDP) and surface (EDX, SEM and AFM) as well as computation techniques such as molecular dynamics simulation and DFT based quantum chemical calculations. The interactions between metal surface and dendrimers can be explain through some common parameters such as EHOMO, ELUMO, ∆E, electronegativity (χ), hardness (η), softness (σ), dipole moment (µ) and fraction of electron transfer (∆N). Present book chapter deals with detail description on the corrosion inhibition and anti-scaling behaviours of dendrimers for metals and silica in several electrolytic media.

Keywords: dendrimers, corrosion inhibitors, mixed type, Langmuir adsorption isotherm, DFT study

Int. J. Corros. Scale Inhib., 2018, 7, no. 4, 593-608 PDF (977 K)
doi: 10.17675/2305-6894-2018-7-4-8

Download PDF (Total downloads: 1677)

Back to this issue content: 2018, Vol. 7, Issue 4 (pp. 460-717)