期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 9, 期 51, 页码 17403-17412出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.1c06939
关键词
2,5-Furandimethanol; Epoxy; Cationic UV curing; Biobased
Biobased monomers are functionalized with epoxy groups to produce new cationic UV-curable monomers for coating applications. The properties of the final UV-cured coatings can be easily tailored by adjusting the ratio of different monomers or incorporating inorganic networks. The thermal and mechanical properties of the coatings are significantly influenced by the content of TEOS and GFA in the formulations.
Biobased 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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