Electro polymerization for (N-Terminal tetrahydrophthalamic acid) for Anti-corrosion and Biological Activity Applications

Abstract

The present work reports the electrochemical synthesis of poly N Terminal tetrahydrophthalamic acid on stainless steel 316 (S.S), which acts as a working electrode, using an electrochemical polymerization technique. Fourier Transform Infrared Spectroscopy (FT-IR), Atomic Force Microscope (AFM) and Scanning Electron Microscope (SEM) characterized the formed polymer film. Corrosion protection tests for coated and uncoated S.S with polymer film were studied in 0.2 M hydrochloric acid (HCl) solution by using electrochemical polarization technique. Kinetic and thermodynamic activation parameters (Ea, A, ΔH*, ΔS* and ΔG*) were calculated. The biological activity of the polymeric film was determined against Gram positive (Staphylococcus aureus; Staph.aure) and negative bacteria (Escherichia coli; E.coli).In addition, the polymer film was modified with nanomaterials(ZnO n nano and Graphene).

تخليق بوليمرات موصلة كهربائياً من البولي أثينول / أكاسيد المعادن النانوية للحماية من التأكل والنشاط البكتيري

“…from the reactant to the activated compound, disordering decreases 28,29 . According to Table 5, the activation of free energy has a positive value. Moreover, almost minute variations were seen as the temperature rose, suggesting that the activated compounds were unstable and that rising temperatures lowered the likelihood of their production 30 .…”

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“…When compared to uncoated SS304L, Tafel's plot reveals the coated alloy yield Ecor. moves into a higher location showing that the coating serves as an anodic protection [14]. Measurements of polarization resistance (Rp) have criteria comparable to those of measurements of all polarization curves, and they are a valuable approach for locating corrosion upsets and starting corrective action.…”

Milk Thistle Leaves Aqueous Extract as a New Corrosion Inhibitor for Aluminum Alloys in Alkaline Medium

“…The corrosion parameters were calculated from Tafel plot by MLabSci software associated with the potentiostat and by Excel using the following equations [12,13]:…”