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Fabrication of degradable and high glass-transition temperature thermosets from palm oil and isosorbide for fiber-reinforced composites
Industrial Crops and Products ( IF 5.9 ) Pub Date : 2021-06-18 , DOI: 10.1016/j.indcrop.2021.113744
Yuchao Wu , Mingen Fei , Tingting Chen , Renhui Qiu , Wendi Liu

Inexpensive, abundant, and low iodine value palm oil (PO) from oil palm (Elaeis guineensis Jacq.) was utilized to formulate biobased polymer matrices for fiber-reinforced composites. A reactive PO fatty acid-ethyl acrylamide (POFA-EA) was synthesized from PO and N-(2-hydroxyethyl)acrylamide (HEAA) via a benign transesterification. Another glucose-derived monomer, i.e., isosorbide was used to react with methacrylate anhydride to synthesize a comonomer, isosorbide-methacrylate (IM). Then, a new class of renewable, property-tunable, and degradable PO-based thermosets were prepared from flexible POFA-EA and rigid IM. The cross-linked POFA-EA/IM resins had suitable processability for composites, high glass transition temperatures (Tgs) (150−204 °C), and superior mechanical strengths and moduli, while maintaining high biobased contents (∼60 %). The PO-based thermoset composites reinforced by kenaf, bamboo, glass, and carbon fibers, respectively, exhibited higher Tgs (136–193 °C) than their petroleum-based counterparts. Meanwhile, the PO-based matrices can be decomposed in a mild alkali solution, which provides a feasible way to recycle high performance reinforcements such as carbon fibers.



中文翻译:

用棕榈油和异山梨醇制备可降解和高玻璃化转变温度的热固性塑料,用于纤维增强复合材料

来自油棕 ( Elaeis guineensis Jacq.) 的廉价、丰富和低碘值的棕榈油 (PO ) 被用于配制用于纤维增强复合材料的生物基聚合物基质。反应性 PO 脂肪酸-乙基丙烯酰胺 (POFA-EA) 是由 PO 和N- (2-羟乙基) 丙烯酰胺 (HEAA) 通过良性酯交换合成的。另一种葡萄糖衍生单体,即异山梨醇用于与甲基丙烯酸酐反应以合成共聚单体异山梨醇-甲基丙烯酸酯(IM)。然后,从柔性 POFA-EA 和刚性 IM 制备了一类新的可再生、性能可调和可降解的 PO 基热固性材料。交联的 POFA-EA/IM 树脂具有适合复合材料的加工性能、高玻璃化转变温度 ( T gs) (150-204 °C),以及优异的机械强度和模量,同时保持高生物基含量(~60%)。分别由洋麻、竹、玻璃和碳纤维增强的 PO 基热固性复合材料的T g s (136–193 °C) 高于石油基复合材料。同时,PO基基质可以在弱碱溶液中分解,这为回收碳纤维等高性能增强材料提供了可行的方法。

更新日期:2021-06-18
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