Bonamigo Moreira Vitor, Rintjema Jeroen, Bravo Fernando, Kleij Arjan W, Franco Lourdes, Puiggalí Jordi, Alemán Carlos, Armelin Elaine
Departament d'Enginyeria Química, Universitat Politècnica de Catalunya (UPC), Campus Diagonal Besòs (EEBE), C/Eduard Maristany, 10-14, Building I, 2nd Floor, 08019 Barcelona, Spain.
Programa de Pós-graduação em Engenharias de Minas, Metalúrgica e de Materiais (PPGE3M), Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, 9500, Porto Alegre, 91501-970 Rio Grande do Sul, Brazil.
ACS Sustain Chem Eng. 2022 Feb 28;10(8):2708-2719. doi: 10.1021/acssuschemeng.1c07665. Epub 2022 Feb 18.
In the area of coating development, it is extremely difficult to find a substitute for bisphenol A diglycidyl ether (DGEBA), the classical petroleum-based raw material used for the formulation of epoxy thermosets. This epoxy resin offers fast curing reaction with several hardeners and the best thermal and chemical resistance properties for applications in coatings and adhesive technologies. In this work, a new biobased epoxy, derived from poly(limonene carbonate) oxide (PLCO), was combined with polyetheramine and polyamineamide curing agents, offering a spectrum of thermal and mechanical properties, superior to DGEBA-based thermosets. The best formulation was found to be a combination of PLCO and a commercial curing agent (Jeffamine) in a stoichiometric 1:1 ratio. Although PLCO is a solid due to its high molecular weight, it was possible to create a two-component partially biobased epoxy paint without the need of volatile organic compounds (i.e., solvent-free formulation), intended for use in coating technology to partially replace DGEBA-based thermosets.
在涂料开发领域，很难找到一种替代品来取代双酚A二缩水甘油醚（DGEBA），这是一种用于配制环氧热固性材料的传统石油基原料。这种环氧树脂与多种固化剂反应固化速度快，并且在涂料和胶粘剂技术应用中具有最佳的耐热性和耐化学性。在这项工作中，一种源自聚（碳酸柠檬烯）氧化物（PLCO）的新型生物基环氧树脂与聚醚胺和聚酰胺胺固化剂相结合，展现出一系列优于基于DGEBA的热固性材料的热性能和机械性能。发现最佳配方是PLCO与市售固化剂（Jeffamine）按化学计量比1:1混合。尽管PLCO因其高分子量而呈固态，但仍有可能制备出一种无需挥发性有机化合物的双组分部分生物基环氧涂料（即无溶剂配方），旨在用于涂料技术中以部分替代基于DGEBA的热固性材料。
