Browsing by Author "Vidhya, M"

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    EVALUATION OF QUINOXALINES AS CORROSION INHIBITORS FOR MILD STEEL IN ACID ENVIRONMENT (Article)
    (Elsevier, 2011-10) Chitra, S; Parameswari, K; Vidhya, M; Kalishwari, M; Selvaraj, A
    Novel Quinoxaline derivatives have been synthesised and evaluated as corrosion inhibitors for mild steel in 1M sulphuric acid by weight loss, gasometry and electrochemical techniques. Results obtained showed that they are efficient corrosion inhibitors. Tafel polarisation studies revealed that the quinoxalines were mixed type inhibitors but slightly cathodic in nature. The adsorption of all the quinoxalines on the mild steel surface from the acid solution has been found to obey Langmuir adsorption isotherm. Addition of halide ions synergistically enhanced the inhibition of the quinoxalines.
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    SYNTHESIS AND CHARACTERIZATION OF EPOXY–SILICONE–POLYTHIOPHENE INTERPENETRATING POLYMER NETWORK FOR CORROSION PROTECTION OF STEEL (Article)
    (Elsevier, 2012-12) Palraj, S; Selvaraj, M; Vidhya, M; Rajagopal, G
    Polymer alloys, particularly interpenetrating polymer networks (IPNs) exhibit excellent coating properties. Often combination of polymers result in IPNs with controlled morphologies and synergistic behavior. In this study, corrosion-resistant IPNs were prepared from immiscible resins (epoxy, silicone and thiophene) using a cross-linking agent and a catalyst. GPC, FTIR, NMR, TG, DTA and SEM studies used to fix the best performing IPN. Surface morphology studies using SEM confirm the incorporation of silicone and polythiophene in to the epoxy polymer to form homogeneously micro structured IPN. The heat-resistance of the IPN was determined as per ASTM 2485. The improved corrosion resistance of the IPN was evaluated by AC impedance measurements.