本研究針對PET和SEBS-g-MA經由雙螺桿押出機押出後的摻合物，在低溫下的衝擊強度和機械性質進行探討。研究中利用掃描式電子顯微鏡（SEM）來觀察表面、切面和斷面，用以說明實驗的結果，並利用動態機械分析（DMA）來探討兩高分子間的相容性及介面作用的情況。研究結果顯示，聚摻物由原本的脆性隨著SEBS-g-MA含例增加變為韌性，而相形態也由顆粒較大分散差變為顆粒小分散較佳。當SEBS-g-MA的含量在10%以上時，低溫下的衝擊強度有較明顯的改善，而當SEBS-g-MA含量在30%以上時，提昇衝擊強度的能力已趨飽和，沒有完全隨著比例的增加呈現線性關係。 Reactive PET blend with SEBS-g-MA in twin-screw extruders were studied. The impact strength and mechanical properties at low temperature of these samples were investigated.The morphology of surface, cross section and broken section was employed with scanning electron microscopy to reveal the interfacial region and confirm these findings. Dynamic mechanical analysis confirmed the interaction and compatibilizers between blends.It was found, low temperature impact strength of samples with more than 10% SEBS-g-MA were apparent improved. While the sample with more than 30% SEBS-g-MA, the low temperature impact strength was left off.
