期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 5, 期 9, 页码 8429-8438出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.7b02292
关键词
Ionic liquids; Epoxy networks; Cardolite; Mechanical properties; Initiator
资金
- Ministere de l'Enseignement Superieur et de la Recherche (MESR)
In this work, the development of new biobased epoxy networks using phosphonium-based ionic liquids combined with dicyanamide and phosphinate counteranions as initiators of epoxy prepolymers was compared with a biobased epoxy-amine system. Ionic liquids (ILs) displayed high reactivity toward cardanol-based epoxy prepolymers, and the obtained biobased epoxy/IL networks highlighted a glass transition temperature of around 30 degrees C, an excellent thermal stability higher than 450 degrees C and higher hydrophobic behavior compared to biobased epoxy-amine networks. In addition, the use of a cardanol-based epoxy prepolymer as a modifier of epoxy/IL networks was also investigated. In this case, the final properties of epoxy/IL networks were improved by the presence of biobased epoxy compounds, especially their surface energy as well as their fracture toughness (+180%), suggesting a new way to develop partially biobased epoxy coatings.
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