Bio-based Epoxy Resins from Epoxidized Plant Oils and Their Shape Memory Behaviors
Bio-based Epoxy Resins from Epoxidized Plant Oils and Their Shape Memory Behaviors
复制标题
DOI：
10.1007/s11746-016-2907-5
复制
发表时间：
2016-12-01
影响因子：
2
通讯作者：
Uyama, Hiroshi
中科院分区：
文献类型：
--
作者：
Tsujimoto, Takashi;Takeshita, Kohei;Uyama, Hiroshi
本研究以4-甲基六氢邻苯二酸酐（MHPA）为固化剂，对环氧大豆油（ESO）和环氧亚麻油（ELO）等功能化植物油的生物基环氧材料进行了加工。在四乙基溴化铵存在下，将环氧化植物油与MHPA在130℃下进行固化反应，得到透明的植物油基环氧材料。由于植物油的脂肪链，所制备的生物基环氧材料具有相对柔软和柔韧的特性。ESO/MHPA聚合物的热性能和力学性能取决于酸酐与氧环烷的摩尔比。与ESO/MHPA聚合物相比，ELO/MHPA聚合物的抗拉强度和杨氏模量等力学性能均有所提高。ELO/MHPA聚合物的玻璃化转变温度高于ESO/MHPA聚合物，这是由于ELO的氧环数较高。此外，ELO/MHPA聚合物具有优异的形状记忆性能。
In this study, bio-based epoxy materials containing functionalized plant oil, such as epoxidized soybean oil (ESO) and epoxidized linseed oil (ELO), were processed with 4-methylhexahydrophthalic anhydride (MHPA) as a curing agent. In the presence of tetraethylammonium bromide, the curing reaction of epoxidized plant oil and MHPA proceeded at 130 A degrees C to give transparent plant oil-based epoxy materials. The resulting bio-based epoxy materials exhibited relatively soft and flexible characters, due to the aliphatic chains of plant oil. The thermal and mechanical properties of the ESO/MHPA polymers depended on the feed molar ratio of anhydride to oxirane. The mechanical properties such as tensile strength and Young's modulus of the ELO/MHPA polymer increased, compared with those of the ESO/MHPA polymer. The glass transition temperature of the ELO/MHPA polymer was higher than that of the ESO/MHPA polymer, because of the high oxirane number of ELO. Furthermore, the ELO/MHPA polymer showed excellent shape memory property.