...Safa Abd El kader Mohamed Hamed; Rushdya Rabee Ali Hassan Purpose This paper aims to investigate the effect of acidity on the morphology of archeological paper, especially in the presence of colors and whether natural pigments play a role in the process of degradation. Design/methodology...

... of addition of iodide ions on the corrosion inhibition efficacy of PPG. Design/methodology/approach The corrosion inhibition performance of PPG alone and on addition of iodide ions in the acid medium was evaluated using weight loss and electrochemical [electrochemical impedance spectroscopy (EIS), linear...

.... Originality/value – Studies involving the use of polymer blends/mixtures as corrosion inhibitor for metals in corrosive environments are scarce. The results suggest that the mixture could find practical application in corrosion control in aqueous acidic environment. The data obtained would form part...

... for the inhibition process and also to analyse the local reactivity of the molecule. Findings – HPMC inhibited aluminium corrosion in the acidic environment. The inhibition efficiency was found to depend on concentration of the inhibitor. Impedance results reveal that HPMC is adsorbed on the corroding metal...

... resistance. Design/methodology/approach The phosphors were modified by the lauric acid‐based Al‐Zr coupling agent (CA). Then, they were characterised by attenuated total reflection fourier transform infrared (ATR‐FTIR), pH and electric conductivity in water, scanning electron microscope (SEM), contact...

... and with the period of contact; and ethanol extract of Heinsia crinata leaves inhibited the corrosion of mild steel in H₂SO₄. N.O. Eddy can be contacted at: nabukeddy@yahoo.com © Emerald Group Publishing Limited 2010 Corrosion inhibitors Corrosion Steel Acids...

... efficiencies were evaluated using thermometric and hydrogen evolution techniques. Findings The inhibition efficiency of ethanol extract of GL vary with concentration of the extract, period of immersion and with temperature. The extract acts as an inhibitor because of its phytochemical and amino acid...

... (%I), degree of surface coverage and to propose the mechanism of inhibition and type of adsorption. Findings Results obtained showed that the Raphia hookeri exudates gum acted as an inhibitor for aluminium corrosion in acidic environment. Inhibition efficiency (%I) increased...

... Results show that PhCo inhibits the corrosion of steel in acidic solution. The inhibition efficiency at 308 K increases with the inhibitor concentration to reach 96 per cent for 10⁻⁴ M, and then decreases at higher temperatures. Kinetic parameters such as E_a...

... Steel Acids The corrosion of materials receives more attention either in fundamental academic and industrial concern (Uhlig and Revie, 1985). Acid solutions are generally used for the removal of undesirable products in several industrial processes. Inhibitors are generally added to alleviate...

... data. Findings The results obtained indicate that EXG inhibits the corrosion of mild steel in acidic medium and that the inhibition efficiency increases with an increase in the concentration of ethanol extracts and decreasing temperature. The inhibition efficiency increased on addition of potassium...

.... The confirmation of the formation of Cu(I)‐triazole by UV‐visible spectroscopy was also new. © Emerald Group Publishing Limited 2007 Copper Corrosion Corrosion inhibitors Acids Because of their mechanical properties and excellent electric conductivity, copper alloys are widely used...

.../methodology/approach Acid extracts of the different parts of Carica papaya were used as inhibitors in various corrosion tests. Gravimetric and gasometric techniques were used to characterise the mechanism of inhibition. Findings The LV, SD, HW and BK extracts were found to inhibit mild steel...

... the gas‐volumetric technique. The inhibition mechanism was inferred by curve fitting of the experimental data to known adsorption isotherms and the trend of inhibition efficiency with temperature. Findings Azadirachta indica extract effectively inhibited steel corrosion in the acid media...

... © Emerald Group Publishing Limited 2006 --> Acids Chemical reagents Chemical technology Taking the hassle out of time-consuming dilutions Keywords: Acids, Chemical reagents, Chemical technology Spex CertiPrep says it is taking the hassle out of the most time...

...) was selected as the best inhibitor among the tetrazole compounds tested. Gravimetric and electrochemical techniques were conducted. Findings PMT was an excellent inhibitor for copper in acid. Its efficiency attained 97.5 per cent and decreased slightly with temperature. Research limitations/implications...

... mechanism from the trend of inhibition efficiency with temperature. The adsorption mode of inhibiting species in the extract was assessed by considering the influence of both acid and halide ions on inhibition efficiency. Findings Telfaria occidentalis extract inhibited mild steel corrosion...

...M.G. Sethuraman; P. Bothi Raja Purpose To evaluate the corrosion inhibition potential of Datura metel in acid medium on mild steel (MS) with a view to develop green corrosion inhibitors. Design/methodology/approach Acid extract of the D. metel was studied for its corrosion...

... the resulting material with cyanuric acid and 2‐aminothiazole. Many other heterocyclic rings that contain tertiary nitrogen atom or amide nitrogen can also be used. Practical implications The new bioactive materials prepared can be used for disinfecting purposes. Originality/value Some of the materials...

... Preparation of 2‐(N‐phthalimido)ethyl acrylate by the reaction of N‐(2‐hydroxyethyl) phthalimide with acrylic acid and polymerisation of the resulting monomer. The exchange reactions of the resulting polymer with amines and hydroxy compounds were carried out. The structure of the resulting...