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    Self-Healing Performance of Smart Polymeric Coatings Modified with Tung Oil and Linalyl Acetate

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    Date
    2021
    Author
    Ismail, Norhan Ashraf
    Khan, Adnan
    Kahraman, Ramazan
    Abdul Shakoor, Rana
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    Abstract
    This work focuses on the synthesis and characterization of polymeric smart self-healing coatings. A comparison of structural, thermal, and self-healing properties of two different polymeric coatings comprising distinct self-healing agents (tung oil and linalyl acetate) is studied to elucidate the role of self-healing agents in corrosion protection. Towards this direction, urea-formaldehyde microcapsules (UFMCs) loaded with tung oil (TMMCs) and linalyl acetate (LMMCs) were synthesized using the in-situ polymerization method. The synthesis of both LMMCs and TMMCs under identical experimental conditions (900 rpm, 55 ◦C) has resulted in a similar average particle size range (63–125 µm). The polymeric smart self-healing coatings were developed by reinforcing a polymeric matrix separately with a fixed amount of LMMCs (3 wt.% and 5 wt.%), and TMMCs (3 wt.% and 5 wt.%) referred to as LMCOATs and TMCOATs, respectively. The development of smart coatings (LMCOATs and TMCOATs) contributes to achieving decent thermal stability up to 450◦C. Electrochemical impedance spectroscopy (EIS) analysis indicates that the corrosion resistance of smart coatings increases with increasing concentration of the microcapsules (TMMCs, LMMCs) in the epoxy matrix reaching ~1 GΩ. As a comparison, LMCOATs containing 5 wt.% LMMCs demonstrate the best stability in the barrier properties than other developed coatings and can be considered for many potential applications.
    URI
    https://doi.org/10.29117/quarfe.2021.0051
    DOI/handle
    http://hdl.handle.net/10576/24318
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    • Center for Advanced Materials Research [‎1482‎ items ]
    • Chemical Engineering [‎1194‎ items ]
    • Theme 1: Energy and Environment [‎73‎ items ]

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