Epoxy-based anticorrosive coating developed with modified poly(o-anisidine) and depolymerized product of PET waste

Epoxy-based anticorrosive coating developed with modified poly(o-anisidine) and depolymerized... Poly(o-anisidine) (POA) is used as a modifier in an epoxy system to enhance its anticorrosive properties. The modification of POA is done by aminosilane to introduce amine functionality on the surface. Through this functionality, it becomes part of the coating backbone during curing of an epoxy-polyaminoamide system. The concentration of poly(o-anisidine) has been varied as 1, 3, and 5 wt%. Depolymerized product of polyethylene terephthalate (PET) obtained from aminolysis of PET with ethylamine has amine functionality. Depolymerized product is added at concentrations of only 1 and 3 wt%. The same concentration is used with 5 wt% of silane-modified POA. The synthesized POA and silane-modified POA (Si-POA) have been characterized by FTIR, UV–Visible, and XRD analysis. The coating is characterized by mechanical properties and it is observed that pencil hardness and scratch hardness of the coating were enhanced to 6H and 3.5 kg from 2H and 2.5 kg of a plain epoxy system. The anticorrosive properties of Si-POA are better as compared to plain POA, but the addition of depolymerized product is unable to improve the anticorrosive performance of the coating. In EIS study, it is observed that 5% Si-POA system shows the highest impedance > 10 G (Ω) and it has a tendency to retain anticorrosive performance for longer duration. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Iranian Polymer Journal Springer Journals

Epoxy-based anticorrosive coating developed with modified poly(o-anisidine) and depolymerized product of PET waste

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Publisher
Springer Berlin Heidelberg
Copyright
Copyright © 2018 by Iran Polymer and Petrochemical Institute
Subject
Chemistry; Polymer Sciences; Ceramics, Glass, Composites, Natural Materials
ISSN
1026-1265
eISSN
1735-5265
D.O.I.
10.1007/s13726-017-0589-y
Publisher site
See Article on Publisher Site

Abstract

Poly(o-anisidine) (POA) is used as a modifier in an epoxy system to enhance its anticorrosive properties. The modification of POA is done by aminosilane to introduce amine functionality on the surface. Through this functionality, it becomes part of the coating backbone during curing of an epoxy-polyaminoamide system. The concentration of poly(o-anisidine) has been varied as 1, 3, and 5 wt%. Depolymerized product of polyethylene terephthalate (PET) obtained from aminolysis of PET with ethylamine has amine functionality. Depolymerized product is added at concentrations of only 1 and 3 wt%. The same concentration is used with 5 wt% of silane-modified POA. The synthesized POA and silane-modified POA (Si-POA) have been characterized by FTIR, UV–Visible, and XRD analysis. The coating is characterized by mechanical properties and it is observed that pencil hardness and scratch hardness of the coating were enhanced to 6H and 3.5 kg from 2H and 2.5 kg of a plain epoxy system. The anticorrosive properties of Si-POA are better as compared to plain POA, but the addition of depolymerized product is unable to improve the anticorrosive performance of the coating. In EIS study, it is observed that 5% Si-POA system shows the highest impedance > 10 G (Ω) and it has a tendency to retain anticorrosive performance for longer duration.

Journal

Iranian Polymer JournalSpringer Journals

Published: May 21, 2018

References

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