journal article·2020-11-23Open access

RETRACTED: New Imidazolium Ionic Liquids from Recycled Polyethylene Terephthalate Waste for Curing Epoxy Resins as Organic Coatings of Steel

Ayman Atta, Hamad Al-Lohedan, Abdelrahman Ezzat, Nourah Sabeela

Coatings· Volume 10· Issue 11
This record is marked as retracted by the source. Review the publisher’s notice before using its findings.

Abstract

Imidazolium ionic liquid (IIL) was prepared from aminolysis of polyethylene terephthalate (PET) waste with pentaethylenehexamine (PEHA) to apply as hardener of epoxy resin. Its purified chemical structures, thermal stability, and thermal characteristics were identified as well as amino phthalamide aminolyzed products. The thermal, thermomechanical, and mechanical properties of the cured epoxy resins with different weight percentages of IIL were investigated to optimize the best weight ratio to obtain homogeneous networks. The adhesion, durability, and corrosion resistance of the cured epoxy resins on the steel surfaces were tested to confirm that the best weight ratio of epoxy: IL was 2:1. This ratio achieved higher adhesion strength and salt spray resistance to seawater extended to 1500 h.
Source: crossref · Quality: baseline

Research context

OpenAlex topics: Epoxy Resin Curing Processes · Polymer composites and self-healing · Polymer Nanocomposites and Properties

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia

Funding

king saud university

References (43)

Show source-provided references
1. Comparative study on the adhesive properties of different epoxy resins10.1016/j.ijadhadh.2005.02.004 ↗
2. Evaluating a four-directional benzene-centered aliphatic polyamine curing agent for epoxy resins10.1007/s10973-012-2863-8 ↗
3. Influence of temperature on the curing of an epoxy adhesive and its influence on bond behaviour of NSM-CFRP systems10.1016/j.compositesb.2015.11.034 ↗
4. Toughening of epoxy resins10.1163/156855506776382664 ↗
5. Effects of different environmental conditions on the mechanical characteristics of a structural epoxy10.1016/j.compositesb.2015.10.036 ↗
6. Reaction mechanism, cure behavior and properties of a multifunctional epoxy resin, TGDDM, with latent curing agent dicyandiamide10.1039/C7RA13233F ↗
7. Investigations on the morphologies and properties of epoxy/acrylic rubber/nanoclay nanocomposites for adhesive films10.1016/j.compscitech.2013.12.023 ↗
8. Storage stability and curing behavior of epoxy-dicyandiamide systems with carbonyldiimidazole-Cu (II) complexes as the accelerator10.1002/pola.26744 ↗
9. Latent curing systems stabilized by reaction equilibrium in homogeneous mixtures of benzoxazine and amine10.1038/srep38584 ↗
10. Nanofilled epoxy adhesive for structural aeronautic materials10.1016/j.compositesb.2014.01.032 ↗
11. Study on polyblending epoxy resin adhesive with lignin I-curing temperature10.1016/j.ijadhadh.2013.09.003 ↗
12. Carbonyldiimidazole-accelerated efficient cure of epoxidized soybean oil with dicyandiamide10.1002/pola.27010 ↗
13. Multiarm star with poly (ethyleneimine) core and poly (ε-caprolactone) arms as modifiers of diglycidylether of bisphenol A thermosets cured by 1-methylimidazole10.1016/j.reactfunctpolym.2012.11.007 ↗
14. Microencapsulation of imidazole curing agents by spray-drying method10.1002/app.34008 ↗
15. Microencapsulation of imidazole curing agents by spray-drying method using W/O emulsion10.1002/app.35490 ↗
16. Synthesis and characterization of epoxy/MCDEA networks modified with imidazolium-based ionic liquids10.1002/mame.201000388 ↗
17. Imidazole-promoted acceleration of crosslinking in epoxidized natural rubber/dicarboxylic acid blends10.1016/j.polymer.2011.09.032 ↗
18. Self-healing of chemically bonded hybrid silica/epoxy for steel Coating10.1016/j.porgcoat.2020.105549 ↗
19. Modified triazine decorated with Fe3O4 and Ag/Ag2O nanoparticles for self-healing of steel epoxy coatings in seawater10.1016/j.porgcoat.2018.04.011 ↗
20. Preparation of green cardanol-based epoxy and hardener as primer coatings for petroleum and gas steel in marine environment10.1016/j.porgcoat.2017.06.002 ↗
21. The chemical recycling of PET in the framework of sustainable development10.1023/B:WAFO.0000044812.47185.0f ↗
22. Recent developments in the chemical recycling of postconsumer poly (ethylene terephthalate) waste10.1021/ie501995m ↗
23. New epoxy resins based on recycled poly (ethylene terephthalate) as organic coatings10.1016/j.porgcoat.2006.11.001 ↗
24. ElsaeedS. M. and Abdel-Azim AA10.1016/j.porgcoat.2005.11.004 ↗
25. Compressive properties and curing behaviour of unsaturated polyester resins in the presence of vinyl ester resins derived from recycled poly (ethylene terephthalate)10.1007/s10965-005-1638-3 ↗
26. Aminolysis and aminoglycolysis of waste poly (ethylene terephthalate)
27. Synthesis and characterization of isophorondiamine based epoxy hardeners from aminolysis of PET
28. Synthesis and characterization of bis-amino ethyl terephthalamide from PET waste and its applications as hardener in DGEBA10.1007/s12588-014-9071-2 ↗
29. Theoretical study on mechanisms of the epoxy− amine curing reaction10.1021/ma070423m ↗
30. Infrared spectroscopy of ionic liquids consisting of imidazolium cations with different alkyl chain lengths and various halogen or molecular anions with and without a small amount of water10.1021/acs.jpcb.7b01429 ↗
31. Molecular mobility in several imidazolium-based ionic liquids according to data of 1H and 13C NMR relaxation10.1002/mrc.4681 ↗
32. Crystallization of polyethyleneterephthalate10.1080/15321799508014598 ↗
33. Glass-Liquid Transition, Crystallization, and Melting of a Room Temperature Ionic Liquid: Thin Films of 1-Ethyl-3-methylimidazolium Bis [trifluoromethanesulfonyl] imide Studied with TOF-SIMS10.1021/jp805120m ↗
34. Thermal degradation study of waste polyethylene terephthalate (PET) under inert and oxidative environments10.1016/j.tca.2019.178340 ↗
35. Epoxy resin/ionic liquid systems: The influence of imidazolium cation size and anion type on reactivity and thermomechanical properties10.1021/ie202321j ↗
36. Epoxy/imidazolium-based ionic liquid systems: The effect of the hardener on the curing behavior, thermal stability, and microwave absorbing properties10.1002/app.48326 ↗
37. Investigating the mechanism through which ionic liquids initiate the polymerisation of epoxy resins10.1016/j.polymer.2018.01.087 ↗
38. Thermal decomposition of carboxylate ionic liquids: Trends and mechanisms10.1039/c3cp53648c ↗
39. New approaches of curing and degradation on epoxy/eggshell composites10.1016/j.compositesb.2020.108125 ↗
40. Controlled degradation of epoxy networks: Analysis of crosslink density and glass transition temperature changes in thermally reworkable thermosets10.1016/j.polymer.2004.01.011 ↗
41. Dual-Functionalized Imidazolium Ionic Liquids as Curing Agents for Epoxy Resins10.1021/acs.iecr.9b06574 ↗
42. Adhesion and cohesion of epoxy-based industrial composite coatings10.1016/j.compositesb.2020.108035 ↗
43. Carbon steel corrosion: A review of key surface properties and characterization methods10.1039/C6RA25094G ↗