Santiago David, Guzmán Dailyn, Ramis Xavier, Ferrando Francesc, Serra Àngels
Eurecat-Chemical Technology Unit, c/Marcel lí Domingo 2, Edif. N5, 43007 Tarragona, Spain.
Thermodynamics Laboratory, ETSEIB Universitat Politècnica de Catalunya, Av. Diagonal 647, 08028 Barcelona, Spain.
Polymers (Basel). 2019 Dec 27;12(1):44. doi: 10.3390/polym12010044.
New thermosets from a triglycidyl eugenol derivative (3EPOEU) as a renewable epoxy monomer were obtained by an epoxy-amine curing process. A commercially-available Jeffamine and isophorone diamine, both obtained from renewable resources, were used as crosslinking agents, and the materials obtained were compared with those obtained from a standard diglycidylether of bisphenol A (DGEBA). The evolution of the curing process was studied by differential scanning calorimetry and the materials obtained were characterized by means of calorimetry, thermogravimetry, thermodynamomechanical analysis, stress-strain tests and microindentation. 3EPOEU formulations were slightly less reactive, and the thermosets obtained showed higher s than those prepared from DGEBA, since they had higher crosslinking density than formulations with DGEBA because of the more compact structure and higher functionality of the eugenol derivative. 3EPOEU thermosets showed good thermal stability and mechanical properties. The results obtained in this study allow us to conclude that the triglycidyl derivative of eugenol, 3EPOEU, is a safe and environmentally friendly alternative to DGEBA.
通过环氧 - 胺固化工艺，由三缩水甘油基丁香酚衍生物（3EPOEU）作为可再生环氧单体获得了新型热固性材料。一种市售的从可再生资源中获得的Jeffamine和异佛尔酮二胺被用作交联剂，并将所得材料与由双酚A标准二缩水甘油醚（DGEBA）制备的材料进行比较。通过差示扫描量热法研究固化过程的演变，并通过量热法、热重分析法、热力学力学分析、应力 - 应变测试和微压痕对所得材料进行表征。3EPOEU配方的反应活性略低，所得热固性材料的s值高于由DGEBA制备的材料，因为丁香酚衍生物结构更紧凑、官能度更高，其交联密度高于含DGEBA的配方。3EPOEU热固性材料表现出良好的热稳定性和机械性能。本研究所得结果使我们能够得出结论，丁香酚的三缩水甘油基衍生物3EPOEU是DGEBA的一种安全且环保的替代品。
