i) 2017 - 37 Documents

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Author: search.filters.author.Saranya, J

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    COMPARISON OF THE INHIBITION PROPERTY OF QUINOXALINE DERIVATIVE ON MILD STEEL IN 1.5M H2SO4, 3M HCL AND 1M H3PO4
    (Journal of materials and Environmental Sciences, 2017) Saranya, J; Sounthari, P; Chitra, S
    Corrosion inhibition of mild steel in 1.5M H2SO4, 3M HCl and 1M H3PO4 was investigated in the absence and presence of different concentrations of quinoxaline derivative namely 2,3-di(furan-2-yl)quinoxaline(FQ). Weight loss, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) measurements were employed. Impedance measurements showed that the charge transfer resistance increased and double layer capacitance decreased with increase in the inhibitor concentration. Potentiodynamic polarization study showed that the inhibitor acted as mixedtype inhibitors in all the three acids.
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    POLYAMIDOAMINOEPICHLOROHYDRIN RESIN A NOVEL SYNTHETIC ANTI-CORROSIVE WATER SOLUBLE POLYMER FOR MILD STEEL
    (Elsevier, 2017-08) Nirmala Devi, G; Saranya, J; Manjubaashini, N; Daniel Thangadurai, T; Selvaraj Mohana, Roopan; Chitra, S
    A novel polyamidoaminoepichlorohydrin resin was prepared and analyzed using spectroscopy techniques and its anti-corrosion properties were studied and observed. Inhibition efficiency was calculated by impedance spectroscopy, loss in weight and potentiodynamic polarization. Authors inferred results as the inhibitors tested differently are acted as better anti-corrosive agent. The thermodynamic data of activation were determined. The adsorption of resin on the steel surface was calculated according to Langmuir adsorption theory. A surface study was performed using SEM, AFM, FT-IR and XRD. Inhibition mechanism was deduced from concentration and temperature dependence of inhibition efficiency, Langmuir adsorption, SEM and AFM results.
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    SYNTHESIS, CHARACTERIZATION AND BIOLOGICAL EVALUATION OF RU(III) MERCAPTOPYRIMIDINE SCHIFF BASE COMPLEXES
    (Wiley, 2017-03-27) Jone Kirubavathy, S; Saranya, J; Sathya, N; Enoch, I V M V; Mosae Selvakumar, P; Chitra, S
    A new series of mercaptopyrimidine Ru(III) complexes were synthesized and characterized using various spectral techniques like single-crystal X-ray diffraction, Fourier transform infrared and NMR spectroscopies, thermogravimetric analysis and energy-dispersive X-ray analysis. The complexes were evaluated for their pharmacological activities like in vitro antimicrobial, anticancer, antituberculosis and antioxidant activities. The DNA binding of the complexes was investigated by absorption and emission spectral measurements which indicated that the complexes bind to DNA via intercalation, with molecular docking studies validating the results. DNA cleavage studies of the complexes were carried out.
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    SYNTHESIS AND CHARACTERIZATION OF DEXTRIN-BASED POLYMER ELECTROLYTES FOR POTENTIAL APPLICATIONS IN ENERGY STORAGE DEVICES
    (Springer Link, 2017-05-21) Nirmala Devi, G; Chitra, S; Selvasekarapandian, S; Premalatha, M; Monisha, S; Saranya, J
    An attempt has been made to synthesise a new proton conducting polymer electrolyte using the biopolymer dextrin doped with ammonium thiocyanate salts using solution casting technique. The complexation has been studied using X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR). The differential scanning calorimetry (DSC) thermograms of dextrin with NH4SCN showed that Tg value increases with respect to the increase of NH4SCN concentration. The electrical conductivity was measured using AC impedance analyser which showed that ionic conductivity increases with increase in salt concentration up to 40%. Transference number measurement was carried out to investigate the nature of the charge transport species in the polymer electrolyte. Surface morphology of the electrolytes was determined using scanning electron microscope (SEM) studies, and the chemical composition of the elements present was determined using EDAX. The proton battery was constructed with the highest conducting polymer electrolyte Dex-40%NH4SCN and its open circuit voltage with load were carried out.