尼龍66（Nylon66, PA66）是一種使用廣泛的工程性塑膠，在本實驗中，我們將利用聚醚醯亞胺（Polyetherimide, PEI）與聚醚?（Polyethersulfone, PES）這兩種玻璃轉移溫度超過200 ℃的高分子塑膠提高尼龍66的耐熱性質。但由於雙方分子結構差異性較大，導致兩者結合性不佳，形成的合膠中會有明顯的相分離行為，所以我們也進行相容劑的研究開發。在PA66/PEI系統中，我們以PA66接枝環氧樹脂作為相容劑，並發現相容劑可以大幅改善合膠中之分散相粒徑，且對兩者的玻璃轉移溫度均有改變。而在PA66/PES系統裡，我們以環氧樹脂改質PES作為相容劑，實驗並發現相容劑可以減少分散相粒徑，改善合膠之相容性。此外我們並利用馬來酸酐（Maleic anhydride, MA）可以接枝到尼龍和PEI、PES上，並和環氧基反應的特性，添加少量MA以增加合膠之性質。 Nylon 66 is one of the most widely used engineering plastics. In this study, PEI(Polyetherimide) and PES (Polyethersulfone), whose glass transition temperatures is well above 200℃, were employed to improve thermal stability of Nylon66. Due to the huge differences on both the molecular structures and the polarities between the two polymers, significant phase separations were observed, and a compatibilizer is needed. In PA66/PEI system, we therefore first developed a long epoxy chain grafted PA66 compatiblizer, and tested its effect on the compatibility of the blend. It was found that the compatiblizer can shrink the sizes of the discrete phase, and also change the glass transition temperatures of both phases in the blend. In PA66/PES system, PES was modified with DGEBA epoxy resin as compatibilizer. It was found that the sizes of descret phase of the blend was also greatly reduced. Shifting on the glass transition temperatures of both phases were obvious. Both the thermal and mechanical properties of the blend has been improved. The reactive compatiblization could be largely enhanced by adding a small amount of Maleic Anhydride.
