Please use this identifier to cite or link to this item: http://localhost:8080/xmlui/handle/123456789/4364
Title: LINEAR POLYESTERS AS EFFECTIVE CORROSION INHIBITORS FOR STEEL REBARS IN CHLORIDE INDUCED ALKALINE MEDIUM – AN ELECTROCHEMICAL APPROACH
Authors: Chan Basha, Nusrath Unnisa
Gowraraju, Nirmala Devi
Venkatesan, Hemapriya
Subramanian, Chitra
Ill-Min, Chung
Seung-Hyun, Kim
Mayakrishnan, Prabakaran
Issue Date: 20-Mar-2018
Publisher: Elsevier
Abstract: As a motto of framing the strategies to minimise the deterioration in steel reinforced concrete structures as well as the fact that the work carried out with polymers are rare and scanty, polyesters namely Poly (Glycerol azealate) (PGAZ) and 4-(1-(4-methoxy phenyl) cyclo hexyl)phenyl 9-oxodecanoate (MPOD) were synthesised and evaluated for rebar corrosion in simulated concrete pore solution (SCP) for the first time at selected concentrations of 10, 100, 1000 ppm levels with an aid of electrochemical impedance and potentiodynamic polarisation techniques. Nyquist plots favoured increased Rct values suggesting the formation of barrier. Tafel plots represented cathodic inhibition. The experimental datas were best fitted with Langmuir adsorption isotherm facilitating monolayer adsorption. Both the methods employed were in good agreement with each other favouring maximum inhibition efficiency of 71.81% for MPOD and minimum of 57.64% for PGAZ primarily due the difference in aromatic sites as revealed in mechanism.
URI: https://doi.org/10.1016/j.conbuildmat.2018.01.080
Appears in Collections:2.Article (36)



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