本實驗研究環氧樹脂(Epoxy, EP)/聚己內酯(Polycaprolacton, PCL)系統之三重形狀記憶行為，其機制為利用EP的玻璃轉移溫度(Tg)和PCL的熔點(Tm)作為兩個相轉移溫度，並藉由其所形成的半互穿網路結構，使之擁有記憶兩種不同形狀的功能，且最後可回復至初始形態。
本研究分別利用苯氧樹脂(Phenoxy)及中空管狀高嶺土(Halloysite nanotube, HNT)來改質EP/PCL的系統，希望可以改善以往回復率及固定率不高之缺點，製備出擁有高回復率及高固定率的形狀記憶高分子。本研究利用Phenoxy中的烴基(OH-)與PCL中的羰基(C=O)產生氫鍵，且藉由兩物質間非晶區互溶，藉以提供在材料內部儲存應力所需的硬鏈段，來可以記憶較多應力，而相對地釋放較多應力，來改善材料回復形狀的性能；而因應相同增強硬段的概念，本研究另外選擇一相較有機物更硬的無機物HNT，來比較其不同改質的特性。
本研究分別探討0、1、5和10 wt%的Phenoxy及HNT對形狀記憶效果的影響。經試驗的結果得出，Phenoxy及HNT的改質皆能有效的改善PCL段形狀記憶回復率至97%並同時保持98%以上之固定率，而共同添加Phenoxy及HNT之EP/PCL則能達到最好的形狀記憶效能，EP段回復率93%及PCL段回復率98%，為到目前為止熱致型三重形狀記憶高分子，最好之效率表現。

Triple-shape memory amine cured EP/PCL blends modified with Phenoxy and HNT were prepared in this study to improve the critical drawback of EP/PCL blends which exhibited not overall excellent shape memory performance, recover ratio and fixity ratio.
An attempt was made to achieve better shape memory (SM) behavior by a hydrogen bonding interaction between the PCL carbonyl group and the Phenoxy hydroxyl group. PCL and Phenoxy are miscible in the amorphous state. Forming the hydrogen bonding may increase the amount of hard segments and enlarge the stored force to recover to the permanent shape. Moreover, Phenoxy also react with epoxide of EP, enhancing the amount of hard segment in the cross-linked network. By the same concepts, this research tries to add comparatively hard inorganic material, HNT, to compare the efficiency of these two modifying methods.
We adjusted the concentrations of Phenoxy and HNT as 0、1、5 and 10 wt%, respectively. To set the two temporary shapes, the glass transition temperature (Tg) of 32oC of the EP and the melting temperature (Tm) of 58oC of PCL were served during the SM cycle. These transition temperatures are easy to reach for the real application. Results show that both Phenoxy and HNT can improve the SM efficiency. The highest recovery ratio reach to 89.0% and 99.9% of two shape by the HNT 5 wt% adding. At the same time, keeping the high shape fixing ratio around 99%.

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