【摘要】 以桐油为原料制备了一种新型的融合羧基和苯基氨基甲酸肟酯基团的活性预聚体——桐油聚合马来苯醌二肟酯(TOMABD),然后与E51、E44、AG602和EBA30这4种环氧树脂进行交联聚合，构筑得到一系列基于不同环氧树脂的桐油基光热双重响应形状记忆聚合物。通过FT-IR和~1H NMR表征了预聚体的结构，并测试了聚合物的机械性能、热稳定性和形状记忆性能。FT-IR和~1H NMR分析结果表明：目标产物TOMABD已经成功制备。聚合物的机械性能和热稳定性分析表明：4个不同聚合体系具有可控的机械性能，其中TOMABD/E51和TOMABD/AG602聚合体系具有较强的刚性和较高的玻璃化转变温度(T_g),T_g分别为102.49和112.31℃,TOMABD/EBA30聚合体系具有最佳的柔性，其断裂伸长率可达161.22%,而TOMABD/E44聚合体系具有最佳的综合拉伸性能，其拉伸强度可达到27.95 MPa,断裂伸长率可达到37.11%。同时4个不同聚合体系均具有优异的热稳定性，初始热分解温度均超过360℃。TOMABD/E44聚合体系具有优异的光热双重响应形状记忆性能，弯曲样品可在室温6 min、 60℃下1 min或背面点状紫外光照射10 s时迅速恢复原状。更多还原

【Abstract】 A novel activity prepolymer, TOMABD, was prepared from tung oil, incorporating both carboxyl and phenylamino acid oxime ester groups. TOMABD was then crosslinked and polymerized with four kinds of epoxy resins—E51, E44, AG602 and EBA30, to construct a series of tung oil-based photothermal dual-responsive shape memory polymers based on different epoxy resins. The structure of the prepolymer was characterized by FT-IR and ~1H NMR spectroscopy, and the polymer’s mechanical properties, thermal stability, and shape memory performance were also evaluated. FT-IR and ~1H NMR analyses showed that the target product TOMABD had been successfully prepared. Mechanical and thermal stability tests revealed that the four different polymerization systems exhibited controllable mechanical properties. Among them, the TOMABD/E51 and TOMABD/AG602 polymerization systems displayed strong rigidity and high glass transition temperatures(T_g) of 102.49 and 112.31 ℃, respectively. The TOMABD/EBA30 polymerization system demonstrated superior flexibility, with a fracture elongation of 161.22%. Meanwhile, the TOMABD/E44 polymerization system showed the best comprehensive tensile performance, with a tensile strength of 27.95 MPa and a fracture elongation of 37.11%. All the four different polymerization systems exhibited excellent thermal stability, and their initial thermal decomposition temperatures all exceeded 360 ℃. Notably, the TOMABD/E44 system demonstrated outstanding photothermal dual-response shape memory property. The bent sample could rapidly restore to its original state within 6 minutes at room temperature, 1 minute at 60 ℃, or within just 10 s under back spot UV irradiation.更多还原