Biobased furan-based epoxy/TiO2 nanocomposites for the preparation of coatings with improved chemical resistance - Université Côte d'Azur Access content directly
Journal Articles Chemical Engineering Journal Year : 2021

Biobased furan-based epoxy/TiO2 nanocomposites for the preparation of coatings with improved chemical resistance

Angela Marotta
  • Function : Author
Noemi Faggio
  • Function : Author
Veronica Ambrogi
  • Function : Author
Alice Mija
Gennaro Gentile
  • Function : Author
Pierfrancesco Cerruti
  • Function : Author

Abstract

Biobased, solvent-​free thermosetting coating systems are developed from epoxidized hydroxymethylfuran (BOMF) crosslinked with Me nadic anhydride (MNA) filled with TiO2 nanoparticles. The effect of 1 to 5 wt​% of TiO2 on the curing behavior of the resin and the overall performance of the resulting coatings is studied by means of rheol., thermal, mech., morphol., and chem. resistance tests. TiO2 particles shift the curing reaction to higher temps. and reduce the reaction enthalpy, resulting in lower crosslinking degrees and glass transition temps. The resins are applied as tinplate coatings, exhibiting optimal adhesion to the metal substrate (5A according to ASTM D3359)​, and performing well in pencil hardness tests (9H and 7H in gouge and scratch hardness, resp.)​. Morphol. characterization highlights homogeneous distribution of TiO2 nanoparticles even at the highest loading. Finally, the chem. resistance of the coatings to ethanol and acetic acid solns. used as simulants is significantly enhanced by the addn. of TiO2, resulting in an efficient protection of the tinplate from corrosion. Overall, these results demonstrate that the proposed furan-​based thermosets show potential for use as coatings.
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Dates and versions

hal-03280213 , version 1 (07-07-2021)

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Angela Marotta, Noemi Faggio, Veronica Ambrogi, Alice Mija, Gennaro Gentile, et al.. Biobased furan-based epoxy/TiO2 nanocomposites for the preparation of coatings with improved chemical resistance. Chemical Engineering Journal, 2021, 406, pp.127107. ⟨10.1016/j.cej.2020.127107⟩. ⟨hal-03280213⟩
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