• 作者： Huang, Jiann-Wen; Chu, Ning-Jo
• 中文摘要： 一些聚醯胺酸被發現可以在醯胺類溶劑中形成結晶溶劑。實驗結果顯示,聚醯胺酸結構與溶劑對結晶溶劑的形成影響很大。聚醯胺酸可以與醯胺類溶劑形成氫鍵; 而部分醯亞胺後的聚醯胺酸與甲基化後的聚醯胺酸都較原來的聚醯胺酸容易形成結晶溶劑。因此,氫鍵並非形成結晶溶劑的唯一因素,偶極力作用是另一個重要因素。一個包含兩個步驟的形成機構用來解釋聚醯胺酸與醯胺類溶劑的結晶溶劑形成。
• 英文摘要： A number of polyamic acids (PAAs) were found to form crystallosolvate in amide solvent, in addition to those reported previously. From the experimental results, the effect of the structures of PAAs and solvents on the crystallosolvate formation of PAAs in amide solvents are discussed. PAAs form hydrogen bonds with the amide solvents. Crystallosolvate formation of a PAA in amide solvent can be facilitated by either partial imidization or methylation of the PAA. Therefore, the formation of hydrogen bonds between the PAA and solvent was not the only contributing factor in crystallosolvate formation. Dipole-dipole interactions between the ordered polymer and solvent molecules played an equally important role. A two-step mechanism was suggested to describe the crystallosolvate formation from the PAAs in amide solvents.
• 中文關鍵字： 聚醯胺酸; 結晶溶劑; 偶極力作用; 氫鍵
• 英文關鍵字： Polyamic Acid; Crystallosolvate; Dipole-Dipole Interaction; Hydrogen Bond