Advances in anti-corrosive coatings of polymer/graphene nanocomposites

Kausar, Ayesha

doi:10.1016/b978-0-323-90937-2.00006-x

Cited by 1 publication

(2 citation statements)

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“…The Nyquist plot of CPEUr 2 @GO 0.5 coating illustrated a linear relationship between the real and imaginary impedance components which can be attributed to the uniform dispersion of GO nanosheets inside the CPEUr matrix, which operated as a secondary barrier for corrosive ions. These results confirm that the dispersed GO nanosheets introduce a complicated and tortuous path for corrosive ions and hinder the penetration of these ions inside the coating 43 …”

Section: Resultssupporting

confidence: 66%

“…These results confirm that the dispersed GO nanosheets introduce a complicated and tortuous path for corrosive ions and hinder the penetration of these ions inside the coating. 43 The two parameters of CPE, that is, (Y 0 , and n) represent surface roughness and magnitude of CPE. The initial CPE value of CPEUr 2 coating (132 Â 10 À6 ohm À1 s n cm À2 ) was observed to decrease by the incorporation of GO nanosheets and the CPE value of CPEUr 2 @GO 0.5 coating was found to be 165 Â 10 À6 ohm À1 s n cm À2 .…”

Section: Corrosion Resistance Performancementioning

confidence: 99%

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Studies on graphene oxide modified corn oil‐based polyester‐urea nanocomposite coating for anticorrosive application

Alam,

Wahab,

Ahmed

et al. 2024

Polymer Engineering & Sci

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Polyester‐urea coatings were synthesized from corn oil with the help of a series of reactions in three different compositions by varying the amount of urea. Out of all the synthesized compositions, the best composition was optimized based on various parameters. The optimized composition was used as a matrix and graphene oxide (GO) was incorporated in three ratios, for the formulation of corn oil‐based CPEUr@GO nanocomposites. Fourier transform infrared spectroscopy was used to confirm all the reactions. The physico‐mechanical properties of CPEUr2 coating were found to be the best among all the compositions. Therefore, CPEUr2 was selected as a matrix for the inclusion of GO nanosheets to prepare CPEUr2@GO nanocomposites. Thermogravimetric analysis results showed that incorporation of GO enhanced the thermal stability of CPEUr2 up to 325°C. The anticorrosive studies revealed the high impedance value of 6.5 × 105 Ω.cm2 in case of CPEUr2@GO0.5. Furthermore, it can be concluded that the inclusion of 0.5 wt% GO proved to be the optimized amount to produce sustainable CPEUr2 coatings with good performance. These CPEUr@GO nanocomposite coatings can be used for various protective purposes owing to their excellent physico‐mechanical thermal as well as anticorrosive performance.Highlights Corn oil‐based polyester‐urea, CPEUr, coatings were synthesized in three different compositions. The best composition was used as a matrix for the formulation of CPEUr@GO nanocomposites. Graphene oxide of 0.5 wt% was found to be the optimum quantity required to modify CPEUr matrix. Thermal stability, mechanical durability as well as corrosion resistance performances were enhanced. The environment friendly approach is suitable for the development of corrosion protective coatings.

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Section: Resultssupporting

confidence: 66%

Section: Corrosion Resistance Performancementioning

confidence: 99%