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Cationic UV Curing of Bioderived Epoxy Furan-Based Coatings: Tailoring the Final Properties by In Situ Formation of Hybrid Network and Addition of Monofunctional Monomer
journal contribution
posted on 2021-12-14, 07:31 authored by Lorenzo Pezzana, Giuseppe Melilli, Guigo Nathanaël, Nicolas Sbirrazzuoli, Marco SangermanoBiobased
monomers are becoming essential to develop green products
to substitute for petroleum-based materials. In this study, biobased
monomers, such as furfuryl alcohol and 2,5-furandimethanol, are successfully
functionalized with epoxy functional groups producing glycidyl furfuryl
alcohol (GFA) and diglycidyl furfuryl alcohol (DGFA), respectively.
Herein, DGFA is investigated as an innovative cationic UV-curable
monomer for coating applications. An easy tailoring of the properties
of the final UV-cured coatings is demonstrated by varying the ratio
of DGFA:GFA or creating a hybrid coating by using tetraethyl orthosilicate
(TEOS) as a precursor of silica to form an inorganic network. Real-time
Fourier transform infrared spectroscopy is used to monitor the cationic
photopolymerization of DGFA formulations. Finally, glass transition,
contact angle, thermal stability, and mechanical properties are investigated
as a function of TEOS and GFA content in DGFA formulations. The thermal
mechanical behavior is studied by dynamic mechanical thermal analysis.
The thermal properties of the networks are analyzed by dynamic scanning
calorimetry and thermogravimetric analysis.
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using tetraethyl orthosilicatedynamic scanning calorimetrydevelop green productsbioderived epoxy furaninnovative cationic uvcationic uv curingdiglycidyl furfuryl alcoholdgfa ), respectivelythermal mechanical behaviorfurfuryl alcoholfinal uvcationic photopolymerizationthermal stabilitymechanical propertiesthermal propertiesthermogravimetric analysissuccessfully functionalizedsitu formationinorganic networkhybrid networkhybrid coatingglass transitiondgfa formulationscured coatingscurable monomercontact anglecoating applicationsbiobased monomersbecoming essentialbased materialsbased coatings