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Title: Synthesis, characterization and corrosion inhibitive ability of composites silica - polypyrrole
Authors: Vu, Thi Hai Van
Pham, Thi Nam
Nguyen, Thi Thom
Nguyen, Thu Phuong
To, Thi Xuan Hang
Dinh, Thi Mai Thanh
Keywords: Composite silica-polypyrrrole
Corrosion inhibitive ability
Corrosion performance
Issue Date: 2017
Series/Report no.: Vietnam Journal of Chemistry;Số 55 .- Tr.781-786
Abstract: Composites silica/polypyrrole (SiO₂/PPy) were synthesized by in-situ, using FeCl₃ as oxidant, the quantity of silica is varied from 0,15 g, 0,3 g, 0.45 g to 0.6 g (SP1, SP2, SP3 and SP4, respectively). The morphologies and characterizations of composites were evaluated by FT-IR, EDX, SEM, TEM and TGA. EDX result indicated that the percentage of silicon increase from 20.48 to 28.14 % when the quantities of silica in initial mixture increase. Carbon Steel were coated with polyninylbutyral (PVB) resin and PVB coatings containing 10 % SP1, SP2, SP3 and SP4 by spin coating technique. Corrosion protection performance of PVB coating containing SiO₂/PPy was evaluated by measurement of OCP and potentiodynamic polarization. The results shows that the SiO₂/PPy in PVB coating has corrosion inhibitive ability for carbon Steel, it can shift the potential of steel into anode areas and reduce the corrosion current density more than 100 times.
ISSN: 2525-2321
Appears in Collections:Vietnam Journal of Chemistry

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