2019
DOI: 10.3390/polym11121998
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Protection of Mild Steel by Waterborne Epoxy Coatings Incorporation of Polypyrrole Nanowires/Graphene Nanocomposites

Abstract: Polypyrrole nanowires/graphene (PPyNG) nanocomposites as anticorrosive fillers were prepared by in situ polymerization in order to improve the anticorrosion performance of waterborne epoxy coatings. Field emission scanning electron microscope (FESEM) and Fourier transform infrared spectroscopy (FTIR) characterized the morphologies and structures of the synthesized PPyNG. The polypyrrole nanowires with about 50 nm in diameter were obtained. Conjugation length of PPy was increased with the addition of graphene. … Show more

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Cited by 40 publications
(9 citation statements)
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“…35 Obviously, with the addition of GO, the C-N stretching vibrations peak was downshied to 1377 cm À1 probably because of the p-p interactions and hydrogen bonding between the GO layers and aromatic PPy rings. 36,37 Additionally, the ratio between the peak area of the symmetric ring stretching mode and asymmetric ring stretching mode (I 1466 /I 1544 ) could be used to calculate the conjugation length. 35,38 The ratio was increasing from 0.583 to 0.681, 0.719, 0.815, 0.969 for PPy, PPy/GO-1.0, PPy/GO-1.5, PPy/ GO-2.0, PPy/GO-2.5, respectively, which suggested that the conjugation length increased with further addition of GO.…”
Section: Resultsmentioning
confidence: 99%
“…35 Obviously, with the addition of GO, the C-N stretching vibrations peak was downshied to 1377 cm À1 probably because of the p-p interactions and hydrogen bonding between the GO layers and aromatic PPy rings. 36,37 Additionally, the ratio between the peak area of the symmetric ring stretching mode and asymmetric ring stretching mode (I 1466 /I 1544 ) could be used to calculate the conjugation length. 35,38 The ratio was increasing from 0.583 to 0.681, 0.719, 0.815, 0.969 for PPy, PPy/GO-1.0, PPy/GO-1.5, PPy/ GO-2.0, PPy/GO-2.5, respectively, which suggested that the conjugation length increased with further addition of GO.…”
Section: Resultsmentioning
confidence: 99%
“…The polarization curves of the prepared state and F431 as a dispersant with rGO at 0.2%, 0.4%, 0.6%, and 0.8% graphene-modified 3 International Journal of Photoenergy anticorrosive coating are shown in Figure 3. The size of the self-corrosion potential shows the degree of difficulty of its corrosion, and the self-corrosion current density is an important basis for characterizing its resistance to corrosion [18]. It can be seen from Figure 3 that the self-corrosion potential of the coating first appears with an increase in the amount of rGO.…”
Section: Electroactivity Of Anticorrosionmentioning
confidence: 99%
“…[16] There is a great deal of resins that can be applied into anticorrosion coatings, for instance, epoxy resin (EP) and polyvinyl butyral (PVB) etc. [17][18][19][20][21][22] Xu et al tested the corrosion resistance of graphene/ carboxymethylcellulose sodium/waterborne epoxy composite coating in CO 2 -saturated NaCl solution. [7] However, corrosive particles entered into coating easily and resulted in premature failure, due to the embrittlement of cured epoxy resin.…”
Section: Introductionmentioning
confidence: 99%