- 學位論文
混摻碳酸乙烯酯和聚乙二醇複合材料之結構與性質研究
Studies on the structures and properties of composites of ethylene carbonate and poly (ethylene glycol)
摘要
本研究以低分子量聚乙二醇(Poly(ethylene glycol)，PEG)與碳酸乙烯酯(Ethylene Carbonate，EC)不同重量比例進行摻合形成一複合材料，再摻入不同含量1,3;2,4-二苯亞甲基山梨醇(1,3;2,4-Dibenzylidene sorbitol，DBS)作為膠化劑混摻加熱熔融後，其結構與性質變化，之後再過氯酸鋰(Lithium perchlorate，LiClO4)使摻合後可得新型態高分子複合電解液，藉由材料膠態性質期盼進而改善電解液封裝不易性質，而對複合電解液進行分析。由流變儀(Rheometer)分析結果得知材料凝膠熔解溫度(Td)會隨EC含量增加而下降，且其也會隨DBS含量增加而上升。由偏光顯微鏡(Polarized Optical Microscopy，POM)觀察可得知，材料凝膠熔解溫度(Td)會隨EC含量增加而下降，且其也會隨DBS含量增加而上升，此數據與流變儀的凝膠熔解溫度的分析結果相符合;成膠溫度(Tf)會隨EC含量增加而上升，且其也會隨DBS含量增加而上升。再來利用穿透式電子顯微鏡(TEM)觀察得知，纖維結構的寬度約在25-50nm間。由電化學阻抗圖譜(Electrochemical impedance spectroscopy，EIS)觀察可得知，導電度分析結果得到在LiClO4添加量為15/1時為最佳比例，反應範圍穩定性相對純PEG電解液穩定，導電度會隨EC含量增加而上升，且其也會隨DBS含量增加而上升，在DBS添入後亦增加化學穩定性，使電解液反應範圍較寬廣。而在形成膠態電解液後，其封裝安全性、機械性質與穩定性對其在電池組裝相關應用有更加良好之應用性。
並列摘要
In this study, low molecular weight Poly (ethylene glycol), (PEG) and Ethylene Carbonate (EC) were used to form a complex of on, and then on into different content 1,3;2,4-Dibenzylidene Sorbitol (DBS). As a gel mixture of on and heat melt, its structure and sexual change, and then Lithium Perchlorate (LiClO4) so that the one can be combined with a new type of polymer complex electrical solution, By looking forward to the material glue, we can improve the difficult quality of the electrical solution, and analyze the complex electrolyte. From the analysis of the flow change instrument (Rheometer), it is found that the melt temperature (Td) of the material gel decreases with the increase of EC content, and it also increases with the increase of DBS content. It can be found from the polarized microscopic mirror (Polarized Optical Microscopy,POM) that the melt temperature (Td) of the material gel decreases with the increase of EC content, and it also increases with the increase of DBS content, which is consistent with the analysis of the temperature of the gel melting degree of the flow change instrument. The glue temperature (Tf) increases with the increase of EC content, and it also increases with the increase of DBS content. Then use the penetrating electrons to observe the mirror (TEM) to find that the fiber of the structure is about 25-50nm. From the recipe of the electrical impedance map (Electrochemical Impedance Spectroscopy, EIS), it can be found that the results of the performance analysis are the best proportion when the LiClO4 is added at 15/1, and the resistance is stable and the purity of the pure PEG solution, The degree of guidance increases with the increase of EC content, and it will also rise with the increase of DBS content, and after the addition of DBS, it will increase the stability of the chemistry, so that the reaction range of the electrolyte is more broadly broad. After the formation of the glue electrolyte, its sealing safety, mechanical quality and stability of the relationship between the use of the battery is more good to use.